Ver.01 ® PCT-3000 plus PCT3000V01-02T-11800 DIGITAL PRESSURE CONTROLLER FOR COOLING PLANTS 1 - DESCRIPTION 2 - APPLICATION 3 - TECHNICAL SPECIFICATIONS 4 - NOMENCLATURE ADOPTED IN THE MANUAL The is a pressure controller for refrigeration plants that require control in their suction and discharge stages. With up to four internal pressure switches, it allows controlling the following types of installations: - 1 suction and 1 discharge - 2 suction and 1 discharge - 3 suctions and 1 discharge - 2 suctions and 2 independent discharges The has 26 digital outputs (relay), 4 analogue outputs (0 ~ 10Vdc), 5 digital inputs (dry contact), 4 pressure inputs (4 ~ 20mA) and 6 temperature inputs. The number of outputs for each pressure switch can be freely configured among the 26 digital outputs, while the analogue outputs are unique to each one. The four last digital outputs can be configured to work both as control stage and as alarm output. In addition to the pressure inputs, each internal pressure switch of the uses one temperature input. This input can be used for monitoring the temperature of the gas lines and thus for activating low and high temperature alarms. All pressure switches have an internal alarm interlocking in the controller, in addition to a fully configurable reset system. In addition to the four temperature inputs the also has two additional inputs. This two additional inputs are associated to the discharge pressure switch and allows monitoring and controlling the fluid's condensation temperature. The five dry contact digital inputs can be used to detect external alarms and to select the day / night setpoint. Each of these inputs can be associated with one or more internal pressure switches of the . To be applied in complex refrigeration process control, used in compressor bank(s) (suction) and in the fan bank (discharge). 90~264Vac (50/60Hz) 0 to 100 psi / 0 to 6.9 bar (using the SB69-100A transducer) 0 to 500 psi / 0 to 34.4 bar (using the SB69-500A transducer) 1 psi / 0.1 bar -50 a 150°C / -58 a 302°F 0.1°C between -10 and 100°C and 1°C in the rest of the range 1°F in all range 200mA(250Vac) 10mA (0 to 10Vdc) 220x134x54mm 0 to 50°C -40 to 125°C -50 to 150°C 10 to 90% RH (without condensation) PRES 1 - Pressure in the gas line of pressure switch 1 PRES 2 Pressure in the gas line of pressure switch 2 PRES 3 Pressure in the gas line of pressure switch 3 PRES 4 Pressure in the gas line of pressure switch 4 TEMP 1, temperature of the gas line of pressure switch 1 TEMP 2 temperature of the gas line of pressure switch 2 TEMP 3 temperature of the gas line of pressure switch 3 TEMP 4 temperature of the gas line of pressure switch 4 TEMP 5 temperature of the liquid discharge line 1 TEMP 6 temperature of the liquid discharge line 2 DIG 1 to 5 - dry contact digital inputs OUT 1 to 22 - digital control outputs (max 200mA/ 250Vac) OUT 23 to 26 - digital control outputs or alarm output (max 200mA/250Vac) AN 1 - analogue output for pressure switch 1 (0 to 10Vdc, max 10mA) AN 2 - analogue output for pressure switch 2 (0 to 10Vdc, max 10mA) AN 3 - analogue output for pressure switch 3 (0 to 10Vdc, max 10mA) AN 4 - analogue output for pressure switch 4 (0 to 10Vdc, max 10mA) PCT-3000 plus PCT-3000 plus PCT-3000 plus PCT-3000 plus PCT-3000 plus - Power Supply: - Control Pressure: - Pressure Resolution: - Control Temperature: - Temperature Resolution: - Maximum current per digital output: - Maximum current per analogue output: - Dimensions (W x H x D): - Controller operating temperature: - Pressure transducer operating temperature: - Temperature transducer operating temperature: - Operating humidity: - Pressure inputs: - Temperature inputs: - Digital inputs: - Control outputs: TEMP 1 - Temperature input 1 TEMP 2 - Temperature input 2 TEMP 3 - Temperature input 3 TEMP 4 - Temperature input 4 TEMP 5 - Temperature input 5 TEMP 6 - Temperature input 6 S1 - Suction 1 S2 - Suction 2 S3 - Suction3 Suc1 - Suction 1 Suc2 - Suction 2 Suc3 - Suction 3 P1 - Internal pressure switch 1 P2 - Internal pressure switch 2 P3 - Internal pressure switch 3 P4 - Internal pressure switch 4 PRES 1 - Pressure input 1 PRES 2 - Pressure input 2 PRES 3 - Pressure input 3 PRES 4 - Pressure input 4 DIG 1 - Digital input 1 DIG 2 - Digital input 2 DIG 3 - Digital input 3 DIG 4 - Digital input 4 DIG 5 - Digital input 5 AN 1 - analogue output 1 AN 2 - analogue output 2 AN 3 - analogue output 3 AN 4 - analogue output 4 GP1 - Pressure switches group 1 GP2 - Pressure switches group 2 D1 - Discharge 1 D2 - Discharge 2 Desc1 - Discharge 1 Desc2 - Discharge 2 OUT X - Digital output X (that X can be 1 to 26) 6 - OPERATING MODES 6.1 - Description PCT-3000 plus can be configured to operate in four different ways. Each option is called as Operating Mode. The operating modes establish how many internal pressure switches the controller must operate, as well as which pressure inputs and temperature inputs must be used. Depending on the operation mode, the interlocking of pressure switch alarms will change according to the groups formed by different pressure switches (alarm interlocking occurs only between same group pressure switches). The available operating modes are: In this mode the controller will have two internal pressure switches, being one to control the compressors (suction) and another one to control the fans (discharge). The suction pressure switch uses one sensor from 0 to 100 psi to measure the pressure in the gas line together with an optional temperature sensor. The discharge pressure switch uses one sensor from 0 to 500 psi to measure the pressure in the gas line together with an optional temperature sensor. The discharge pressure switch has an additional option for using a second temperature sensor to control the condensation temperature of the refrigerant fluid. In this mode the controller will have three internal pressure switches, being two to control the compressors (suction 1 and suction 2) and another one to control the fans (discharge). Each suction pressure switch uses one sensor from 0 to 100 psi to measure the pressure in the gas line together with an optional temperature sensor. The discharge pressure switch uses one sensor from 0 to 500 psi to measure the pressure in the gas line together with an optional temperature sensor. The discharge pressure switch has an additional option for using a second temperature sensor to control the condensation temperature of the refrigerant fluid. n this mode, the controller will have 4 internal switches, 3 of which control the compressors (suction 1, suction 2 and suction 3) and the other controls the fans (discharge). Each suction pressure switch will use a 0-100 psi sensor to measure the pressure in the gas line, along with an optional temperature sensor. The discharge pressure switch will use a 0-500 psi sensor to measure the pressure in the gas line, along with an optional temperature sensor. One suction and one discharge: Two suctions and one discharge: Three suctions and one discharge: 5 - PARTS IDENTIFICATION LCD Display Ouputs Leds keyboard Display Leds -Activate the main temporary display -Exit the secondary display (quick press) -Reset the secondary display value (long press) -Decrement value -Secondary general information display -Previous item -Increment value -Secondary minimum and maximum display -Next item -Cancel / back -Secondary hourmeter display -Previous pressure switch -Confirm / advance -Secondary alarm display -Next pressure switch Connection terminals 02 01
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Ver.01
®
PCT-3000 plus
PC
T3000V
01-0
2T
-118
00
DIGITAL PRESSURE CONTROLLER
FOR COOLING PLANTS
1 - DESCRIPTION
2 - APPLICATION
3 - TECHNICAL SPECIFICATIONS
4 - NOMENCLATURE ADOPTED IN THE MANUAL
The is a pressure controller for refrigeration plants that require control in their suction and discharge stages. With up to fourinternal pressure switches, it allows controlling the following types of installations:
- 1 suction and 1 discharge- 2 suction and 1 discharge- 3 suctions and 1 discharge- 2 suctions and 2 independent discharges
The has 26 digital outputs (relay), 4 analogue outputs (0 ~ 10Vdc), 5 digital inputs (dry contact), 4 pressure inputs (4 ~ 20mA)and 6 temperature inputs. The number of outputs for each pressure switch can be freely configured among the 26 digital outputs, while the analogueoutputs are unique to each one. The four last digital outputs can be configured to work both as control stage and as alarm output.In addition to the pressure inputs, each internal pressure switch of the uses one temperature input. This input can be used formonitoring the temperature of the gas lines and thus for activating low and high temperature alarms. All pressure switches have an internal alarminterlocking in the controller, in addition to a fully configurable reset system.In addition to the four temperature inputs the also has two additional inputs. This two additional inputs are associated to thedischarge pressure switch and allows monitoring and controlling the fluid's condensation temperature.The five dry contact digital inputs can be used to detect external alarms and to select the day / night setpoint. Each of these inputs can be associatedwith one or more internal pressure switches of the .
To be applied in complex refrigeration process control, used in compressor bank(s) (suction) and in the fan bank (discharge).
90~264Vac (50/60Hz)0 to 100 psi / 0 to 6.9 bar (using the SB69-100Atransducer)
0 to 500 psi / 0 to 34.4 bar (using the SB69-500Atransducer)1 psi / 0.1 bar-50 a 150°C / -58 a 302°F
0.1°C between -10 and 100°C and 1°C in the rest of the range1°F in all range
200mA(250Vac)10mA(0 to 10Vdc)
220x134x54mm0 to 50°C
-40 to 125°C-50 to 150°C
10 to 90% RH (without condensation)PRES 1 - Pressure in the gas line of pressure switch 1PRES 2 Pressure in the gas line of pressure switch 2PRES 3 Pressure in the gas line of pressure switch 3PRES 4 Pressure in the gas line of pressure switch 4
TEMP 1, temperature of the gas line of pressure switch 1TEMP 2 temperature of the gas line of pressure switch 2TEMP 3 temperature of the gas line of pressure switch 3TEMP 4 temperature of the gas line of pressure switch 4TEMP 5 temperature of the liquid discharge line 1TEMP 6 temperature of the liquid discharge line 2
DIG 1 to 5 - dry contact digital inputsOUT 1 to 22 - digital control outputs (max 200mA/ 250Vac)OUT 23 to 26 - digital control outputs or alarm output (max 200mA/250Vac)AN 1 - analogue output for pressure switch 1 (0 to 10Vdc, max 10mA)AN 2 - analogue output for pressure switch 2 (0 to 10Vdc, max 10mA)AN 3 - analogue output for pressure switch 3 (0 to 10Vdc, max 10mA)AN 4 - analogue output for pressure switch 4 (0 to 10Vdc, max 10mA)
PCT-3000 plus
PCT-3000 plus
PCT-3000 plus
PCT-3000 plus
PCT-3000 plus
- Power Supply:- Control Pressure:
- Pressure Resolution:- Control Temperature:- Temperature Resolution:
- Maximum current per digital output:- Maximum current per analogue output:- Dimensions (W x H x D):- Controller operating temperature:- Pressure transducer operating temperature:- Temperature transducer operating temperature:- Operating humidity:- Pressure inputs:
- Temperature inputs:
- Digital inputs:- Control outputs:
TEMP 1 - Temperature input 1TEMP 2 - Temperature input 2TEMP 3 - Temperature input 3TEMP 4 - Temperature input 4TEMP 5 - Temperature input 5TEMP 6 - Temperature input 6
S1 - Suction 1S2 - Suction 2S3 - Suction3
Suc1 - Suction 1Suc2 - Suction 2Suc3 - Suction 3
P1 - Internal pressure switch 1P2 - Internal pressure switch 2P3 - Internal pressure switch 3P4 - Internal pressure switch 4
PRES 1 - Pressure input 1PRES 2 - Pressure input 2PRES 3 - Pressure input 3PRES 4 - Pressure input 4
DIG 1 - Digital input 1DIG 2 - Digital input 2DIG 3 - Digital input 3DIG 4 - Digital input 4DIG 5 - Digital input 5
AN 1 - analogue output 1AN 2 - analogue output 2AN 3 - analogue output 3AN 4 - analogue output 4
GP1 - Pressure switches group 1GP2 - Pressure switches group 2
D1 - Discharge 1D2 - Discharge 2
Desc1 - Discharge 1Desc2 - Discharge 2
OUT X - Digital output X (that X can be 1 to 26)
6 - OPERATING MODES
6.1 - Description
PCT-3000 plus can be configured to operate in four different ways. Each option is called as Operating Mode. The operating modesestablish how many internal pressure switches the controller must operate, as well as which pressure inputs and temperature inputs must beused. Depending on the operation mode, the interlocking of pressure switch alarms will change according to the groups formed by differentpressure switches (alarm interlocking occurs only between same group pressure switches). The available operating modes are:
In this mode the controller will have two internal pressure switches, being one to control the compressors(suction) and another one to control the fans (discharge).The suction pressure switch uses one sensor from 0 to 100 psi to measure the pressure in the gas line together with an optional temperaturesensor.The discharge pressure switch uses one sensor from 0 to 500 psi to measure the pressure in the gas line together with an optionaltemperature sensor. The discharge pressure switch has an additional option for using a second temperature sensor to control thecondensation temperature of the refrigerant fluid.
In this mode the controller will have three internal pressure switches, being two to control thecompressors (suction 1 and suction 2) and another one to control the fans (discharge).Each suction pressure switch uses one sensor from 0 to 100 psi to measure the pressure in the gas line together with an optional temperaturesensor.The discharge pressure switch uses one sensor from 0 to 500 psi to measure the pressure in the gas line together with an optionaltemperature sensor. The discharge pressure switch has an additional option for using a second temperature sensor to control thecondensation temperature of the refrigerant fluid.
n this mode, the controller will have 4 internal switches, 3 of which control the compressors (suction 1,suction 2 and suction 3) and the other controls the fans (discharge).Each suction pressure switch will use a 0-100 psi sensor to measure the pressure in the gas line, along with an optional temperature sensor.The discharge pressure switch will use a 0-500 psi sensor to measure the pressure in the gas line, along with an optional temperature sensor.
One suction and one discharge:
Two suctions and one discharge:
Three suctions and one discharge:
5 - PARTS IDENTIFICATION
LCD Display
OuputsLeds
keyboard
Display Leds
-Activate the main temporary display-Exit the secondary display (quick press)-Reset the secondary display value (long press)
-Decrement value-Secondary general information display-Previous item
-Increment value-Secondary minimum and maximum display-Next item
-Cancel / back-Secondary hourmeter display-Previous pressure switch
-Confirm / advance-Secondary alarm display-Next pressure switch
Connection terminals
0201
The discharge pressure switch also offers the option to use a second temperature sensor to control the condensing temperature of therefrigerant.In this operation mode, suction pressure switches (P1, P2 and P3) and discharge pressure switch (P2) form a single pressure switch group.
In this mode, the controller will have 4 internal switches, 2 of which control the compressors (suction 1and suction 2) and the other 2 control the fans (discharge 1 and discharge 2).Each suction pressure switch will use a 0-100 psi sensor to measure the pressure in the gas line, along with an optional temperature sensor.Each of the discharge pressure switches will use a 0-500 psi sensor to measure the pressure in the gas line, along with an optionaltemperature sensor. Each discharge pressure switch also offers the option to use a second temperature sensor to control the condensingtemperature of the refrigerant.In this operation mode, suction pressure switch 1 (P1) and discharge pressure switch 2 (P2) form the pressure switch 1 group, while suctionpressure suction 2 (P3) forms the second pressure switch group along with discharge pressure switch 2 (P4).
The table below shows the function each pressure switch to control the refrigeration system.
Two suctions and two discharges:
6.2 - Type of internal pressure switch depending on the operating mode
P1 P2 P3 P4
Group 1
Group 1
Group 1
Group 1
Group
Group 1
Grupo 1
Group 1
1
Group 1
Group 1
Group 2
Group 1
Group 2
6.4 - Abbreviations and colors of the internal pressure switches depending on the
operating mode
PCT-3000 plus
PCT-3000 plus
uses a color system to quickly identify which internal pressure switch is being viewed. This color system is the same for alloperating modes and can be observed in the indicating leds of the display and outputs.
Green - Internal pressure switch 1Yellow - Internal pressure switch 2Violet - Internal pressure switch 3Blue - Internal pressure switch 4
Besides the indication of colors, also uses abbreviations in the display to indicate which internal pressure switch certaininformation refers to. These abbreviations do not account for the type of pressure switch (suction or discharge) and thus they are the same forall indication modes. The function of the abbreviations shown below is only to indicate the number of the internal pressure switch.
- Internal pressure switch 1- Internal pressure switch 2- Internal pressure switch 3- Internal pressure switch 4
P1
P2
P3
P4
6.3 - Pressure switch groups according to operation modeBecause the switches in a cooling system operate in an interrelated manner, their pressure control logic should consider that an alarm situation inone of the switches triggers an equivalent corrective action in all other pressure switches in the same system. As is capableof controlling up to 2 different cooling systems, “Pressure Switch Groups” were created to represent all internal pressure switches that belong tothe same cooling system. The table below shows the pressure switch groups that each operation mode will have, noting that interlocking in caseof alarm will occur only between same group switches.
PCT-3000 plus
one suctionone discharge
OperatingMode
Internal pressure switch
P1 P2 P3 P4
Suction
Suction
Suction
Suction
Discharge
Suction
Suction
Discharge
Discharge
Suction
Suction
Discharge
Dischargetwo suctionstwo discharges
three suctionsone discharges
two suctionone discharges
one suctionone discharge
OperatingMode
Internal pressure switch
two suctionstwo discharges
three suctionsone discharges
two suctionone discharges Operating
Mode
Pressure input
PRES 1(psi)
Inlet temperature for gas lineInlet liquid line
temperature
TEMP 1(°C)
TEMP 2(°C)
TEMP 3(°C)
TEMP 4(°C)
TEMP 5(°C)
TEMP 6(°C)
PRES 4(psi)
PRES 3(psi)
PRES 2(psi)
0~100
0~100
0~100
0~100
0~500
0~100
0~100
0~500
0~500
0~100
0~100
0~500
0~500
-50~105
-50~105
-50~105
-50~105
-50~150
-50~105
-50~105
-50~150
-50~150
-50~105
-50~105
-50~150
-50~150
-50~105
-50~105
-50~105
-50~105 -50~105
one suctionone discharge
two suctionsone discharge
three suctionsone discharge
two suctionstwo discharges
OperatingMode
Internal pressure switch
P1 P2 P3 P4
S1
S1
S1
S1
D1
S2
S2
D1
D1
S3
S2
D1
D2
OperatingMode
Pressure input
PRES 1 PRES 2 PRES 3 PRES 4
Inlet temperature for gas lineInlet liquid line
temperature
TEMP 1 TEMP 2 TEMP 3 TEMP 4 TEMP 5 TEMP 6
P1
P1
P1
P1
P2
P2
P2
P2
P3
P3
P3
P4
P4
P1
P1
P1
P1
P2
P2
P2
P2
P3
P3
P3
P4
P4
P2
P3
P4
P2 P4
6.7 - Setting the operating mode
The operating mode is set through the advanced parameter menu. For more information on this procedure, go to “Advanced parameter menu
Access code Operating mode setting” in this manual. When setting the operating mode, will save the default values for allfunctions in the internal memory. Therefore it is essential to set the operating mode before starting to set the parameters of the product.
→
→ PCT-3000 plus
These are the most used indicators on the controller screen; however, users must be aware that, depending on the operation mode, a particularabbreviation may be associated with different internal pressure switches, for instance: abbreviation S2 in operation mode “2 suctions / 1discharge” refers to internal pressure switch 2 (P2), whereas in operation mode “2 suctions / 2 discharges”, S2 refers to internal pressure switch3 (P3).
The table below shows how the sensor inputs are linked to the internal pressure switches. For cases where no link exists, the sensor input is notused and thus no connection to a sensor is required.
6.5 - Link of each sensor input to each type of internal pressure switch depending on the
operating mode
6.6 - Pressure and temperature reading limits for each sensor input depending on
the operating modeThe table below shows the measurement limits for the sensors for each sensor input.
For a more complete indication with the type and number of the pressure switch, uses the codes presented in the tablebelow.As these abbreviations indicate the type of pressure switch, they are different for each operating mode.
PCT-3000 plus
one suctionone discharge
two suctionsone discharge
three suctionsone discharge
two suctionstwo discharges
one suctionone discharge
two suctionsone discharge
three suctionsone discharge
two suctionstwo discharges
03 04
PCT-3000 plus
1 2 3 4 5 6 7 8 9 10 11 1312 14 15 16 17 18 19 20 21 22 23 24 25 2726 28
29 30 31 32 33 34 35 35 37 38 39 4140 42 43 44 45 46 47 48 49 50 51 52 53 5554 56
WIRING PANEL
Full GaugeControls
Temperature sensor SB19 of the gas suction line (Optional)
Temperature sensor SB59 of the gas discharge line (Optional)
Unused
Unused
Temperature sensor SB19 of the liquid discharge line (Optional)
Unused
Pressure sensor SB69-100A of the suction
Pressure sensor SB69-500A of the discharge
Unused
Unused
Frequency inverter of the suction (Optional)
Frequency inverter of the discharge (Optional)
Unused
Unused
Freely configurable among the pressure switches
Freely configurable among the pressure switches
TEMP 1
TEMP 2
TEMP 3
TEMP 4
TEMP 5
TEMP 6
PRES 1
PRES 2
PRES 3
PRES 4
AN 1
AN 2
AN 3
AN 4
DIG 1~5
OUT 1~26
7.8.1 - Operating mode with one suction and one discharge
PO
WE
RS
UP
PLY
90~
264V
ac
A B
1 2 3 4 5 6 7 8 9 10 11 1312 14 15 16 17 18 19 20 21 22 23 24 25 2726 28
TE
MP
1
TE
MP
5
PR
ES
1
PR
ES
2
29 30 31 32 33 34 35 35 37 38 39 4140 42 43 44 45 46 47 48 49 50 51 52 53 5554 56
TE
MP
2
DIG
1
DIG
2
DIG
3
DIG
4
DIG
5
AN
1
AN
2
GN
D
GN
D
OU
T1
OU
T2
OU
T3
OU
T4
OU
T5
OU
T6
OU
T7
OU
T8
OU
T9
OU
T10
OU
T11
OU
T12
OU
T13
OU
T14
OU
T15
OU
T16
OU
T17
OU
T18
OU
T19
OU
T20
OU
T21
OU
T22
SE
RIA
LC
OM
MU
NIC
AT
ION
RS
-485
CO
MM
ON
OU
T1-1
3
CO
MM
ON
OU
T14-2
6
OU
T23 /
OU
T24 /
OU
T25 /
OU
T26 /
G -
GR
EE
NB
- B
RO
WN
G B G B
7.8 - Wiring diagram
Input PRES 1
Operating Mode
SB69-100A
SB69-500A
SB69-100A
SB69-100A
SB69-500A
SB69-100A
SB69-100A
SB69-100A
SB69-500A
SB69-100A
SB69-500A
SB69-100A
SB69-500A
Input PRES 3
Input PRES 2
Input PRES 4
Input TEMP 5
Operating Mode
SB19 SB19 SB19 SB19
SB19Input TEMP 6
7.4 - Digital control outputs
7.5 - Analogue outputs
7.6 - Alarm outputs
7.7 - Digital inputs
The 26 digital outputs can be freely associated with the internal pressure switches at the time of setting the operating mode.reserves the outputs in increasing order of the internal pressure switches (P1, P2, P3 and P4). For the first pressure switch (P1), the outputs arereserved starting from OUT1, for the second pressure switch (P2), starting from the last P1 output and so on.
The four analogue outputs (AN 1,AN 2,AN 3 andAN 4) will always be used with the respective pressure switches (P1, P2, P3 and P4). Thus eachpressure switch uses only a single analogue output. The analogue output can control a frequency inverter to change the capacity of acompressor or fan in order to provide a more efficient control of the plant.
The four last digital outputs (OUT 23, OUT 24, OUT 25 and OUT 26) can be used as alarm outputs. The configuration of these outputs as alarmsis done together with the operating mode setup. If only one alarm is configured, the last output (OUT 26) will be reserved. If two alarms areconfigured, the two last outputs (OUT 25 and OUT 26) will be used, and so on.
The digital inputs can be used to control the day / night setpoint or to activate external alarms. For the latter, the user can configure the action theinput will trigger, as well as which internal pressure switches will be affected.
PCT-3000 plus
7.3 - Temperature sensors for the condensation controlThe table below shows the temperature sensors that must be used as well as the respective inputs. Using the liquid line temperature sensor is anoptional feature. To enable the use of the liquid line temperature sensors, the temperature condensation mode must be enabled for each internaldischarge pressure switch.
7.2 - Fluid line temperature sensorsThe table below shows the temperature sensors that must be used as well as the respective inputs. Using the fluid line (liquid line) temperaturesensor is an optional feature. To enable the use of temperature sensors, the temperature alarm mode must be enabled for each internal pressureswitch.
7 - CONNECTIONS
7.1 - Pressure sensorsThe table below shows the pressure sensors that must be used as well as the respective inputs. It is mandatory to use the pressure sensors foreach internal pressure switch that is active.
one suctionone discharge
two suctionsone discharge
three suctionsone discharge
two suctionstwo discharges
Input PRES 1
Operating Mode
Input PRES 3
Input PRES 2
Input PRES 4
one suctionone discharge
two suctionsone discharge
three suctionsone discharge
two suctionstwo discharges
SB19
SB59
SB19
SB19
SB59
SB19
SB19
SB19
SB59
SB19
SB59
SB19
SB59
one suctionone discharge
two suctionsone discharge
three suctionsone discharge
two suctionstwo discharges
05 06
S1 Offset TempP32 @ 0.0 #
Temperature sensor SB19 of the gas suction line 1 (Optional)
Temperature sensor SB59 of the gas discharge line 1 (Optional)
Temperature sensor SB19 of the gas suction line 2 (Optional)
Temperature sensor SB59 of the gas discharge line 2 (Optional)
Temperature sensor SB19 of the liquid discharge line 1 (Optional)
Temperature sensor SB19 of the liquid discharge line 2 (Optional)
Pressure sensor SB69-100A of the suction 1
Pressure sensor SB69-500A of the discharge 1
Pressure sensor SB69-100A of the suction 2
Pressure sensor SB69-500A of the discharge 2
Frequency inverter of the suction 1 (Optional)
Frequency inverter of the discharge 1 (Optional)
Frequency inverter of the suction 2 (Optional)
Frequency inverter of the discharge 2 (Optional)
Freely configurable among the pressure switches
Freely configurable among the pressure switches
TEMP 1
TEMP 2
TEMP 3
TEMP 4
TEMP 5
TEMP 6
PRES 1
PRES 2
PRES 3
PRES 4
AN 1
AN 2
AN 3
AN 4
DIG 1~5
OUT 1~26
PO
WE
RS
UP
PLY
264V
ac
90~
A B
SE
RIA
LC
OM
MU
NIC
AT
ION
RS
-485
1 2 3 4 5 6 7 8 9 10 11 1312 14 15 16 17 18 19 20 21 22 23 24 25 2726 28
DIG
1
DIG
2
DIG
3
DIG
4
DIG
5
AN
1
AN
2
GN
D
GN
D
29 30 31 32 33 34 35 35 37 38 39 4140 42 43 44 45 46 47 48 49 50 51 52 53 5554 56
AN
3
AN
4
OU
T1
OU
T2
OU
T3
OU
T4
OU
T5
OU
T6
OU
T7
OU
T8
OU
T9
OU
T10
OU
T11
OU
T12
OU
T13
OU
T14
OU
T15
OU
T16
OU
T17
OU
T18
OU
T19
OU
T20
OU
T21
OU
T22
CO
MM
ON
OU
T1-1
3
CO
MM
ON
OU
T14-2
6
OU
T23 /
OU
T24 /
OU
T25 /
OU
T26 /
7.8.4 independent- Operating mode with three suctions and two discharges
TE
MP
1
PR
ES
1
TE
MP
2
TE
MP
3
TE
MP
5
PR
ES
2
PR
ES
3
TE
MP
4
PR
ES
4
TE
MP
6
G B G B G
G -
GR
EE
NB
- B
RO
WN
B GB
Access code
Parameters of the internal pressure switches
Parameters of the digital inputs
Parameters of the alarm outputs
Maintenance of the digital outputs
General configuration parameters
8 - ADVANCED PARAMETER MENUThe advanced parameter menu allows configuring the operating settings of the internal pressure switches, as well as the settings of other featuresof the controller. To enter the advanced parameter menu, press and for 2 seconds until the display changes to the code option. To select anoption, just press . To go back use the key. The setting is changed using the and keys. The key confirms the operation and thekey cancels it. The available options are:
To set any parameter, just press . If the change is available, the corresponding value will start to flash. The function value can be changed bypressing or . Press again to confirm the new value. To cancel and go back, press .
The advanced parameter menu will close automatically if no keys are pressed for 15 seconds.
02-Pressostats
03-Dig. inputs
04-Alarms
05-Maintenance
06-Config
01-Code
Parameterdescription
Parametercode
Parametervalue
Parameterunit
Temperature sensor SB19 of the gas suction line 1 (Optional)
Temperature sensor SB19 of the gas suction line 2 (Optional)
Temperature sensor SB59 of the gas discharge line 1 (Optional)
Unused
Temperature sensor SB19 of the liquid discharge line 1 (Optional)
Unused
Pressure sensor SB69-100A of the suction 1
Pressure sensor SB69-100A of the suction 2
Pressure sensor SB69-500A of the discharge 1
Unused
Frequency inverter of the suction 1 (Optional)
Frequency inverter of the suction 2 (Optional)
Frequency inverter of the discharge 1 (Optional)
Unused
Freely configurable among the pressure switches
Freely configurable among the pressure switches
TEMP 1
TEMP 2
TEMP 3
TEMP 4
TEMP 5
TEMP 6
PRES 1
PRES 2
PRES 3
PRES 4
AN 1
AN 2
AN 3
AN 4
DIG 1~5
OUT 1~26
DIG
1
DIG
2
DIG
3
DIG
4
DIG
5
AN
1
AN
2
GN
D
GN
D
AN
3
PO
WE
RS
UP
PLY
90~
264V
ac
A B
SE
RIA
LC
OM
MU
NIC
AT
ION
RS
-485
1 2 3 4 5 6 7 8 9 10 11 1312 14 15 16 17 18 19 20 21 22 23 24 25 2726 28
29 30 31 32 33 34 35 35 37 38 39 4140 42 43 44 45 46 47 48 49 50 51 52 53 5554 56
OU
T1
OU
T2
OU
T3
OU
T4
OU
T5
OU
T6
OU
T7
OU
T8
OU
T9
OU
T10
OU
T11
OU
T12
OU
T13
OU
T14
OU
T15
OU
T16
OU
T17
OU
T18
OU
T19
OU
T20
OU
T21
OU
T22
CO
MM
ON
OU
T1-1
3
CO
MM
ON
OU
T14-2
6
OU
T23 /
OU
T24 /
OU
T25 /
OU
T26 /
7.8.2 - Operating mode with two suctions and one discharge
TE
MP
1
PR
ES
1
TE
MP
2
TE
MP
3
TE
MP
5
PR
ES
2
PR
ES
3
G B G B B G
G -
GR
EE
NB
- B
RO
WN
Temperature sensor SB19 of the gas suction line 1 (Optional)
Temperature sensor SB19 of the gas suction line 2 (Optional)
Temperature sensor SB19 of the gas suction line 3 (Optional)
Temperature sensor SB59 of the gas discharge line 1 (Optional)
Temperature sensor SB19 of the liquid discharge line 1 (Optional)
Unused
Pressure sensor SB69-100A of the suction 1
Pressure sensor SB69-100A of the suction 2
Pressure sensor SB69-100A of the suction 3
Pressure sensor SB69-500A of the discharge 1
Frequency inverter of the suction 1 (Optional)
Frequency inverter of the suction 2 (Optional)
Frequency inverter of the suction 3 (Optional)
Frequency inverter of the discharge 1 (Optional)
Freely configurable among the pressure switches
Freely configurable among the pressure switches
TEMP 1
TEMP 2
TEMP 3
TEMP 4
TEMP 5
TEMP 6
PRES 1
PRES 2
PRES 3
PRES 4
AN 1
AN 2
AN 3
AN 4
DIG 1~5
OUT 1~26
DIG
1
DIG
2
DIG
3
DIG
4
DIG
5
AN
2
GN
D
GN
D
AN
3
AN
4
SE
RIA
LC
OM
MU
NIC
AT
ION
RS
-485
A B
1 2 3 4 5 6 7 8 9 10 11 1312 14 15 16 17 18 19 20 21 22 23 24 25 2726 28
AN
1
29 30 31 32 33 34 35 35 37 38 39 4140 42 43 44 45 46 47 48 49 50 51 52 53 5554 56
OU
T1
OU
T2
OU
T3
OU
T4
OU
T5
OU
T6
OU
T7
OU
T8
OU
T9
OU
T10
OU
T11
OU
T12
OU
T13
OU
T14
OU
T15
OU
T16
OU
T17
OU
T18
OU
T19
OU
T20
OU
T21
OU
T22
CO
MM
ON
OU
T1-1
3
CO
MM
ON
OU
T14-2
6
OU
T23 /
OU
T24 /
OU
T25 /
OU
T26 /
7.8.3 - Operating mode with three suctions and one discharge
TE
MP
1
PR
ES
1
TE
MP
2
TE
MP
3
TE
MP
5
PR
ES
2
PR
ES
3
TE
MP
4
PR
ES
4
G B G B G B GB
PO
WE
RS
UP
PLY
90~
264V
ac
G -
GR
EE
NB
- B
RO
WN
07 08
Fun
PSI / °C Bar / °F
Minimum setpoint threshold
Upper setpoint threshold
Daytime setpoint
Nighttime setpoint
Type of control of the digital outputs
Digital output hysteresis
Type of control of the analogue output
Hysteresis of the analogue output
Minimum value of the analogue output
Power of the analogue output
Minimum time of compressor switched on
Minimum time of compressor switched off
Time between activations
Time between deactivations
Time for maintenance alarm
State of the digital outputs when an error occurs in the
pressure sensors
State of the analogue output when an error occurs in
the pressure sensor
Delay for the alarm upon powering on the controller
Reset mode
Time period for automatic resets
Low pressure alarm
High pressure alarm
Hysteresis of the pressure alarms
Temperature sensor mode
Low temperature alarm
Hysteresis of the temperature alarm
Time for liquid collection
High superheating temperature
Low superheating temperature
Critical superheating temperature
Gas line pressure offset
Gas line temperature offset
0
0
0
0
0
1
0
1
0.0
0.0
0
0
0
0
0
0
0
0
0
0
-1
0
1
0
-50.1
0.1
0
-50.0
-50.1
-50.1
-5
-5.0
100
100
100
100
3
50
1
50
50.0
10.0
999
999
999
999
999
2
100.0
999
10
999
100
101
50
1
105.0
5.0
30
105.1
105.0
105.0
5
5.0
0
100
20
20
1
12
0
12
10.0
0.0
0
0
0
0
999
0
0
0
0
0
-1
101
10
0
-50.1
5.0
10
-50.1
-50.1
0
0.0
105.1
0
0
0
0
0
0.1
0
0.1
0.0
0.0
0
0
0
0
0
0
0
0
0
0
-0.1
0
0.1
0
-58
1
0
-58
-58
-58
-0.3
-9
6.9
6.9
6.9
6.9
3
3.4
1
3.4
50.0
10.0
999
999
999
999
999
2
100.0
999
10
999
6.9
7.0
3.4
1
221
9
30
221
221
221
0.3
9
0
6.9
1.4
1.4
1
0.8
0
0.8
10.0
0.0
0
0
0
0
999
0
0
0
0
0
-0.1
7.0
0.7
0
-58
9
10
0
0
221
-58
-58
bar
bar
bar
bar
-
bar
-
bar
%
HP
sec.
sec.
sec.
sec.
x10h
-
%
sec.
-
min
bar
bar
bar
-
°F
°F
sec.
°F
°F
°F
bar
°F
PSI
PSI
PSI
PSI
-
PSI
-
PSI
%
HP
sec.
sec.
sec.
sec.
x10h
-
%
sec.
-
min
PSI
PSI
PSI
-
°C
°C
sec.
°C
°C
°C
PSI
°C
P01
P02
P03
P04
P05
P06
P07
P08
P09
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P01 - Minimum setpoint threshold
P02 - Upper setpoint threshold
P03 - Daytime setpoint
P04 - Nighttime setpoint
P05 - Type of control of the digital outputs
P06 - Digital output hysteresis
P07 - Type of control of the analogue output
Lower threshold aimed at preventing an exceedingly low pressure from being adjusted by mistake for daytime and nighttime setpoint.
Upper threshold aimed at preventing an exceedingly high pressure from being adjusted by mistake for daytime and nighttime setpoint.
Control pressure when the controller is in daytime mode
Control pressure when the controller is in nighttime mode
Function that selects the type of control of the compressors- Control switched off
- Linear activation- Activation by time (rotation)- Activation by capacity
It is the relative pressure value defining the pressure range within which the compressors must be activated. The points for which eachcompressor will be activated depend on the number of outputs and the type of digital control. The minimum hysteresis value is the number ofdigital outputs configured for the pressure control.
Function that selects the method of control of the analogue output.- Control switched off
- Control switched on
Off
Linear
Rotation
Capacity
Off
On
8.2.1 - Parameters
The options available for the suction pressure switches are:
When adjusting the operation of an internal pressure switch, makes available the parameters in the display according tothe type of pressure switch. Thus there will be two parameter tables, being one for the suction type pressure switches and another one for thedischarge type pressure switches.
PCT-3000 plus
Min. Max. StandardMin. Max. UnitUnit StandardDescription
The options available for the discharge pressure switches are:
02-Pressostats
2.1
Suction 1
2.1.1
Parameters
2.1.2
Estages
2.1.3
Relays mode
2.1.4
Compres cap
2.1.5
Cap div
02-Pressostats
2.2
Discharge 1
2.2.1
Parameters
2.2.2
Stages
2.2.3
Relays mode
2.2.4
Fans capac
2.2.5
Capac div
2.2.6
Gas curve
8.1 - Access code
8.1.1 - Operating mode setting
8.1.2 - Setting the units for temperature and pressure
8.2 - Parameters of the internal pressure switches
Enter “ ” in this option to be able to change the advanced parameters. This option also allows entering the code to change the operating modeand the units of measurement for pressure and temperature. Follow the steps below to perform these procedures:
Enter the code “ ” and confirm with the key. will then request you to set the following items:- Operating Mode- Number of alarm outputs- Number of outputs for the pressure switch 1- Number of outputs for the pressure switch 2- Number of outputs for the pressure switch 3 (only if the operating mode uses the P3)- Number of outputs for the pressure switch 4 (only if the operating mode uses the P4)- Temperature measurement unit- Pressure measurement unit
Set all items in accordance with the needs of the refrigeration system and confirm the values using the key. Note that during theseadjustments you cannot go back using the key and the menu will not terminate automatically if no key is pressed.During the configuration of the operating mode, the leds of the relays are activated in order to show the final association of the internalpressure switches with the respective digital outputs. The user must record the final configuration of the outputs in order to be able toproceed with the right connection of the compressors and fans.Upon changing the operating mode, will save the default values for all functions in the internal memory. Therefore it isessential to set the operating mode before starting to set the parameters of the product.
Enter the code " " and confirm with the key. will request the adjustment for the units of temperature and then forthe units of pressure. Set both as needed and then confirm using the key. Upon changing the units of measurement,will save the default values for all temperature and pressure functions in the internal memory. Therefore it is essential to set the operatingmode before starting to set the parameters of the product.
In the option "Pressure switches" you can configure the parameters of each internal pressure switch individually. To accessthis menu item, press the key. In the following screen, the controller will show a list containing the available pressure switches to be adjusted.Select the required pressure switch and press to proceed. Within the configuration of each internal pressure switch, willmake available several types of options, which will vary in accordance with the function of the pressure switch (suction or discharge).
123
717
231
PCT-3000 plus
PCT-3000 plus
PCT-3000 plusPCT-3000 plus
PCT-3000 plus
PCT-3000 plus
1
2
3
4
5
6
7
8
The options available for the suction pressure switches are:
1009
It is the reference value for activating the temperature signaling below the desired point. Upon the occurrence of this alarm, all outputs of thesuction controller will be deactivated.
It is the temperature difference for leaving the alarm condition.
If there is a liquid protection output, the last compressor will remain active for this time when the pressure reaches the setpoint. This functionallows for a compressor to keep the refrigerant fluid when the liquid protection output is activated, thus allowing collecting the gas.
The alarm of low suction performance will be activated above this temperature. To deactivate this function, just increment the value until theOFF message is displayed.
The liquid protection output (if any) will be activated below this temperature. To deactivate this function, just decrement the value until the OFFmessage is displayed.
All the suction outputs will be deactivated and the liquid protection output (if any) will be activated below this temperature. To deactivate thisfunction, just decrement the value until the OFF message is displayed.
It allows compensating any deviations in the pressure reading caused by the replacement of the pressure switch sensor.
It allows compensating any deviations in the temperature reading caused by the replacement of the pressure switch sensor.
P25 - Low temperature alarm
P26 - Hysteresis of the temperature alarm
P27 - Time for liquid collection
P28 - High superheating temperature
P29 - Low superheating temperature
P30 - Critical superheating temperature
P31 - Gas line pressure offset
P32 - Gas line temperature offset
The options available for the discharge pressure switches are:
Fun
PSI / °C Bar / °F
Minimum setpoint threshold
Upper setpoint threshold
Daytime setpoint
Nighttime setpoint
Type of control of the digital outputs
Digital output hysteresis
Type of control of the analogue output
Hysteresis of the analogue output
Minimum value of the analogue output
Power of the analogue output
Minimum time of fans switched on
Minimum time of fans switched off
Time between activations
Time between deactivations
Time for maintenance alarm
State of the digital outputs when an error occurs in the
pressure sensors
State of the analogue output when an error occurs in the
pressure sensor
Delay for the alarm upon powering on the controller
Reset mode
Time period for automatic resets
Low pressure alarm
High pressure alarm
Hysteresis of the pressure alarms
Temperature sensor mode
High temperature alarm
Hysteresis of the temperature alarm
Breeze system mode
Breeze system setpoint
Hysteresis of the breeze system
Control mode of condensation temperature
Control setpoint of condensation temperature
Differential control of condensation temperature 1
Differential control of condensation temperature 2
Gas line pressure offset
Gas line temperature offset
Liquid line temperature offset
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
-1
0
1
0
-50.0
0.1
0
0
1
0
-50.0
0.1
0.1
-20
-5.0
-5.0
500
500
500
500
3
250
1
250
500
10
999
999
999
999
999
2
100.0
999
10
999
500
501
250
1
150.1
5.0
1
500
50
3
105.0
5.0
5.0
20
5.0
5.0
0
500
200
200
1
50
0
50
100
0
0
0
0
0
999
0
0
0
0
0
-1
501
10
0
150.1
5.0
0
500
50
0
105.0
5.0
5.0
0
0.0
0.0
0
0
0
0
0
0,1
0
0,1
0
0
0
0
0
0
0
0
0
0
0
0
-0.1
0
0.1
0
-58
1
0
0.0
0.1
0
-58
1
1
-1.4
-9
-9
34.4
34.4
34.4
34.4
3
17.2
1
17.2
500
10
999
999
999
999
999
2
100.0
999
10
999
34.4
34.5
17.2
1
302
9
1
34.4
3.4
3
221
9
9
1.4
9
9
0
34.4
13.8
13.8
1
3.4
0
3.4
100
0
0
0
0
0
999
0
0
0
0
0
-0.1
34.5
0.7
0
302
9
0
34.4
3.4
0
221
9
9
0
0
0
bar
bar
bar
bar
-
bar
-
bar
%
HP
sec.
sec.
sec.
sec.
x10h
-
%
sec.
-
min
bar
bar
bar
-
°F
°F
-
bar
bar
-
°F
°F
°F
PSI
°F
°F
PSI
PSI
PSI
PSI
-
PSI
-
PSI
%
HP
sec.
sec.
sec.
sec.
x10h
-
%
sec.
-
min
PSI
PSI
PSI
-
°C
°C
-
PSI
PSI
-
°C
°C
°C
PSI
°C
°C
P01
P02
P03
P04
P05
P06
P07
P08
P09
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36
Description Min. Max. StandardMin. Max. UnitUnit Standard
P08 - Hysteresis of the analogue output
P09 - Minimum value of the analogue output
P10 - Power of the analogue output
P11 - Minimum time of compressor switched on
P12 - Minimum time of compressor switched off
P13 - Time between activations
P14 - Time between deactivations
P15 - Time for maintenance alarm
P16 - State of the digital outputs when an error occurs in the pressure sensors
P17 - State of the analogue output when an error occurs in the pressure sensor
P18 - Delay for the alarm upon powering on the controller
P19 - Reset mode
P20 - Time period for automatic resets
P21 - Low pressure alarm
P22 - High pressure alarm
P23 - Hysteresis of the pressure alarms
P24 - Temperature sensor mode
It is the relative pressure value defining the pressure range within which the analogue output will modulate its value.
It is the minimum value that the analogue output will have when activated. This value limits the minimum rotation speed of the compressor.This parameter also adjusts the value that will keep the compressor working when the is collecting the liquid if thisfunction is configured.
It is the power in HP of the compressor that is operating through the frequency inverter.
It is the minimum time the compressor will remain switched on, that is, the length of time between the last start up and the next stop. It is aimedat avoiding high voltage surges in the power lines. This function is only present in the digital outputs configured as compressor.
It is the minimum time the compressor will remain switched off, that is, the length of time between the last stop and the next start up. Thisfunction is only present in the digital outputs configured as compressor.
This time is for ensuring that no simultaneous compressor activations will occur to avoid overloading power lines. This function is only presentin the digital outputs configured as compressor.
This time is for ensuring that no simultaneous compressor deactivations will occur, thus avoiding voltage surges in the power lines. Thisfunction is only present in the digital control outputs. This function is only present in the digital outputs configured as compressor.
Time expressed in tens of hours that the compressors can remain working without maintenance.
Configures the state of the compressors when an error occurs in the pressure sensor:- All compressors off;- All compressors on;- Keep the compressors in the same status they were in the moment of the error.
Configures the percentage that will be kept in the analogue output if an error occurs in the pressure sensor.
Time the controller waits after the initialization to activate the alarms and the alarm output (if active).
It configures the controller's reset method upon the occurrence of faults / alarms.- Manual reset only- One automatic reset- Two automatic resets- Three automatic resets- Four automatic resets- Five automatic resets- Six automatic resets- Seven automatic resets- Eight automatic resets- Nine automatic resets-Always automatic resets
This function allows adjusting the time for which automatic resets will be allowed. If all automatic resets have already been performed withinthe time configured in this function and another fault occurs, the controller will only accept the next reset in manual mode.
It is the reference pressure value for activating pressure signaling below the desired point. Upon the occurrence of this alarm, all outputs of thesuction pressure switch will be switched off.
It is the reference pressure value for activating pressure signaling above the desired point. Upon the occurrence of this alarm, all outputs ofthe suction pressure switch will be switched on.
It is the pressure difference for leaving the alarm condition.
It shows whether the temperature sensor of the gas line is active. The temperature alarm and overheating control functions will be availableonly if this sensor is active.
- Gas line temperature sensor switched off- Gas line temperature sensor switched on
PCT-3000 plus
0
1
2
00
01
02
03
04
05
06
07
08
09
10
Off
On
11 12
07
08
09
10
On
Off
0
1 Subcool
2 Subcool.
Subcool
Subcool
Subcool Subcool
3 Subcool
Subcool
Subcool
Subcool Subcool
Subcool.1 Subcool.2
- Seven automatic resets- Eight automatic resets- Nine automatic resets-Always automatic resets
This function allows adjusting the time for which the configured automatic resets will be allowed. If all automatic resets have already beenperformed within the time configured in this function and another fault occurs, the controller will only accept the next reset in manual mode.
It is the reference pressure value for activating the pressure signaling below the desired point. Upon the occurrence of this alarm, all outputs ofthe suction pressure switch will be switched off.
It is the reference pressure value for activating the pressure signaling above the desired point. Upon the occurrence of this alarm, all outputsof the suction pressure switch will be switched on.
It is the pressure difference for leaving the alarm condition.
It shows whether the temperature sensor of the gas line is active. The temperature alarm and overheating control functions will be availableonly if this sensor is active.
-Alarm and temperature sensor switched off-Alarm and temperature sensor switched on
It is the reference value for activating the temperature signaling above the desired point. Upon the occurrence of this alarm, all outputs of thedischarge pressure switch will be switched on.
It is the temperature difference for leaving the alarm condition.
- Breeze system control switched off- Breeze system control switched o
When the pressure is above this value, the breeze output will be activated, if this output exists.
Pressure difference to switch off the breeze output.
Configures to operation of the condensation temperature control (liquid line temperature).- Off - Turns off the condensation temperature control.- Only output 1- The is activated when the temperature of the sensor of the liquid line reach the value set in "Setpoint of
condensation temperature control" + "Differential 1 of the condensation temperature control", and deactivated when it return to the valueset in "Setpoint of condensation temperature control".
- Two independent outputs - The is activated when the temperature of the sensor of the liquid line reach the value set in"Setpoint of condensation temperature control" + "Differential 1 of the condensation temperature control". When It reach the value set in"Setpoint of condensation temperature control" + "Differential 2 of the condensation temperature control", it activates theoutput, remaining activated the . When the temperature falls below from the "Setpoint of condensation temperature control"+ "Differential 1 of the condensation temperature control" the output is deactivated, remaining activated theoutput until the temperature of the liquid line stays below of the value set in "Setpoint of condensation temperature control".
- Two interleaved outputs - Activate the when the temperature of the sensor of the liquid line reach the value set in"Setpoint of condensation temperature control" + “ ysteresis 1 of the condensation temperature control". When It reach the value set in"Setpoint of condensation temperature control" + " ysteresis 2 of the condensation temperature control” it activates theoutput and the output is deactivated. When the temperature falls below from the "Setpoint of condensation temperaturecontrol" + ysteresis 1 of the condensation temperature control", the output is deactivated and the outputback to be activated. The two outputs will be deactivated only when the temperature is below the value set to "Setpoint of condensationtemperature control.”
It is the reference value of the liquid line to switch off the control outputs of the condensation temperature.
It is the temperature difference measured on liquid line to switch on the control outputs and respectively.
It allows compensating any deviations in the pressure reading caused by the replacement of the pressure switch sensor.
It allows compensating any deviations in the temperature reading caused by the replacement of the pressure switch sensor.
It allows compensating any deviations in the liquid line temperature reading caused by the replacement of the pressure switch sensor.
P20 - Time period for automatic resets
P21 - Low pressure alarm
P22 - High pressure alarm
P23 - Hysteresis of the pressure alarms
P24 - Temperature sensor mode
P25 - High temperature alarm
P26 - Hysteresis of the temperature alarm
P27 - Breeze system mode Configures the operation of the breeze system.
P28 - Breeze system setpoint
P29 - Hysteresis of the breeze system
P30 - Control mode of condensation temperature
P31 - Control setpoint of condensation temperature
P32 and P33 - Differential control of condensation temperature 1 and 2
P34 - Gas line pressure offset
P35 - Gas line temperature offset
P36 - Liquid line temperature offset
Off
On n
. 1
1
. 2
. 1
. 2 . 1
. 2
. 2
. 1
. 2 . 1
outputHH
H
P01 - Minimum setpoint threshold
P02 - Upper setpoint threshold
P03 - Daytime setpoint
P04 - Nighttime setpoint
P05 - Type of control of the digital outputs
P06 - Digital output hysteresis
P07 - Type of control of the analogue output:
P08 - Hysteresis of the analogue output
P09 - Minimum value of the analogue output
P10 - Power of the analogue output
P11 - Minimum time of fan switched on
P12 - Minimum time of fan switched off
P13 - Time between activations
P14 - Time between deactivations
P15 - Time for maintenance alarm
P16 - State of the digital outputs when an error occurs in the pressure sensors
P17 - State of the analogue output when an error occurs in the pressure sensor
P18 - Delay for the alarm upon powering on the controller
P19 - Reset mode
Lower threshold aimed at preventing an exceedingly low pressure from being adjusted by mistake for daytime and nighttime setpoint.
Upper threshold aimed at preventing an exceedingly high pressure from being adjusted by mistake for daytime and nighttime setpoint.
Control pressure when the controller is in daytime mode.
Control pressure when the controller is in nighttime mode.
Function that selects the type of control of the fans.- Control switched off
- Linear activation-Activation by time (rotation)- Activation by capacity
It is the relative pressure value defining the pressure range within which the fans must be activated. The points for which each fan will beactivated depend on the number of outputs and the type of digital control. The minimum hysteresis value is the number of digital outputsconfigured for the pressure switch in question.
Function that selects the method of control of the analogue output.- Control switched off
- Control switched on
It is the relative pressure value defining the pressure range within which the analogue output will modulate its value.
It is the minimum value that the analogue output will have when activated. This value limits the minimum rotation speed of the fan.
It is the power in HP of the fan that is operating through the frequency inverter.
It is the minimum time the fan will remain switched on, that is, the length of time between the last start up and the next stop. It is aimed atavoiding high voltage surges in the power lines. This function is only present in the digital outputs configured as fan.
It is the minimum time the fan will remain switched off, that is, the length of time between the last stop and the next start up. This function is onlypresent in the digital outputs configured as fan.
This time is for ensuring that no simultaneous activations of the discharge stages will occur, to avoid overloading power lines. This function isonly present in the digital outputs configured as fan.
This time is for ensuring that no simultaneous deactivations of the discharge stages will occur, thus avoiding voltage surges in the power lines.This function is only present in the digital outputs configured as fan.
Time expressed in tens of hours that the fans can remain working without maintenance.
Configures the state of the fans when an error occurs in the pressure sensor.- All fans off;- All fans on;- Keep the fans in the same status they were in the moment of the error.
Configures the percentage that will be kept in the analogue output if an error occurs in the pressure sensor.
Time the controller waits after the initialization to activate the alarms and the alarm output (if active).
It configures the controller's reset method upon the occurrence of faults / alarms.- Manual reset only- One automatic reset- Two automatic resets- Three automatic resets- Four automatic resets- Five automatic resets- Six automatic resets
Off
Linear
Rotation
Capacity
Off
On
0
1
2
00
01
02
03
04
05
06
13 14
DXX -
DXX - State when the contact of the digital input X is open
DXX -
Digital input mode
Pressure switches associated to the digital input
It allows adjusting the operating mode of the digital output.Off
Day/Nigth
All on
All off
Deactive
Active
All
P1
P2
P3
P4
All GP1
Suct GP1
All GP2
Suct GP2
- Input disabled- Selection of the daytime / nighttime setpoint
- Enable all outputs- Disable all outputs
- Digital input considered disabled-Digital input considered enabled
It allows adjusting which pressure switches are linked to the digital input.- All pressure switches
- Pressure switch 1- Pressure switch 2- Pressure switch 3- Pressure switch 4
-All of pressure switch group 1-All suctions of pressure switch group 1
-All of pressure switch group 2-All suctions of pressure switch group 2
8.4 - Parameters of the alarm outputs
Fun
PSI / °C Bar / °F
Digital input mode 1
State when the contact of the digital input 1 is open
Pressure switches associated to the digital input 1
Digital input mode 2
State when the contact of the digital input 2 is open
Pressure switches associated to the digital input 2
Digital input mode 3
State when the contact of the digital input 3 is open
Pressure switches associated to the digital input 3
Digital input mode 4
State when the contact of the digital input 4 is open
Pressure switches associated to the digital input 4
Digital input mode 5
State when the contact of the digital input 5 is open
Pressure switches associated to the digital input 5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
1
8
3
1
8
3
1
8
3
1
8
3
1
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
1
8
3
1
8
3
1
8
3
1
8
3
1
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
D01
D02
D03
D04
D05
D06
D07
D08
D09
D10
D11
D12
D13
D14
D15
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
8.3 - Parameters of the digital inputs
Description Min. Max.Fun Standard Min. Max. Standard
PSI / °C Bar / °F
UnitUnit
Alarm 1 mode
Pressure switches associated to the alarm 1
Alarm 1 on time
Alarm 1 off time
Alarm 1 output in reverse mode
Alarm 2 mode
Pressure switches associated to the alarm 2
Alarm 2 on time
Alarm 2 off time
Alarm 2 output in reverse mode
Alarm 3 mode
Pressure switches associated to the alarm 3
Alarm 3 on time
Alarm 3 off time
Alarm 3 output in reverse mode
Alarm 4 mode
Pressure switches associated to the alarm 4
Alarm 4 on time
Alarm 4 off time
Alarm 4 output in reverse mode
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
19
8
999
999
1
19
8
999
999
1
19
8
999
999
1
19
8
999
999
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
19
8
999
999
1
19
8
999
999
1
19
8
999
999
1
19
8
999
999
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-
-
sec.
sec.
-
-
-
sec.
sec.
-
-
-
sec.
sec.
-
-
-
sec.
sec.
-
-
-
sec.
sec.
-
-
-
sec.
sec.
-
-
-
sec.
sec.
-
-
-
sec.
sec.
-
A01
A02
A03
A04
A05
A06
A07
A08
A09
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
Description Min. Max. StandardMin. Max. UnitUnit Standard
8.2.2 - Stages
8.2.3 - Modes of the relays
8.2.4 - Capacity of the compressors (suction) / Capacity of the fans (discharge)
8.2.5 - Capacity
8.2.6 - Gas curve (only for the discharge pressure switch)
It allows adjusting the function of each digital output of the internal pressure switch. The options of each output are:
- Digital output off (free);- Digital output to activate the compressor;
- Digital output to activate the capacity valve of a compressor.This type of output must be after a "Compressor" output or other "Unloader" output;
- Digital output to activate a valve for liquid collection.
- Disabled Digital output off (free);- Digital output to activate a fan;
- Digital output to activate an auxiliary fan. This type of output must be after a "Fan" output or other "Fan aux" output;- Output 1 of the condensation temperature control;- Output 2 of the condensation temperature control. It must be after the output 1;
- Output of the breeze system control.
It allows adjusting whether the relay of the digital output will operate in the normally open (NO) or normally closed (NC) mode.
It allows adjusting the total power in HP of each compressor or fan.
It allows adjusting the portion of each capacity valve (Unloader) within the total power of the compressor.
It allows adjusting the portion of each ventilation auxiliary (Fan aux) within the total power of the fan.
It allows adjusting the curve of the gas used in the group of pressure switches. The uses this curve to calculate thesuperheating temperature from the suction pressure of each gas line.
Suction pressure switches:
Discharge pressure switches:
Suction pressure switches:
Discharge pressure switches:
Off
Compressor
Unloader
Liq Collec
Fan
Fan aux
Subcool. 1
Subcool. 2
Breeze
Off
PCT-3000 plus
Fun
PSI / °C Bar / °F
Pressure point 1 of the mapped curve
Temperature point 1 of the mapped curve
Pressure point 2 of the mapped curve
Temperature point 2 of the mapped curve
Pressure point 3 of the mapped curve
Temperature point 3 of the mapped curve
Pressure point 4 of the mapped curve
Temperature point 4 of the mapped curve
Pressure point 5 of the mapped curve
Temperature point 5 of the mapped curve
Pressure point 6 of the mapped curve
Temperature point 6 of the mapped curve
Pressure point 7 of the mapped curve
Temperature point 7 of the mapped curve
Pressure point 8 of the mapped curve
Temperature point 8 of the mapped curve
Pressure point 9 of the mapped curve
Temperature point 9 of the mapped curve
Pressure point 10 of the mapped curve
Temperature point 10 of the mapped curve
100
105.0
100
105.0
100
105.0
100
105.0
100
105.0
100
105.0
100
105.0
100
105.0
100
105.0
100
105.0
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
6.9
221
6.9
221
6.9
221
6.9
221
6.9
221
6.9
221
6.9
221
6.9
221
6.9
221
6.9
221
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
-0.1
-58
PSI
°C
PSI
°C
PSI
°C
PSI
°C
PSI
°C
PSI
°C
PSI
°C
PSI
°C
PSI
°C
PSI
°C
C01
C02
C03
C04
C05
C06
C07
C08
C09
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
Bar
°F
Bar
°F
Bar
°F
Bar
°F
Bar
°F
Bar
°F
Bar
°F
Bar
°F
Bar
°F
Bar
°F
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
-1
-50.1
Through the pressure reading on the suction, the controller calculates the ideal temperature of expansion (of evaporation) based in the curve of thegas used in the system. The overheating temperature is the result from the difference between the temperature on the suction and the temperatureon the evaporation.
The suction parameters enable to adjust the value of "Overheating high temperature", "Overheating low temperature" and "Overheating critictemperature", in order to warn the system in cases of low performance and protection of the compressors.
The gas curve can be adjusted entering up to 10 points. Each point comprises one pressure value and one temperature value. For example:parameters C01 and C02 map the first point of the curve, C03 and C04 map the second point of the curve and so on. Adjusting a parameter for itsminimum value will disable the point relating to that parameter.
Description Min. Max. StandardMin. Max. UnitUnit Standard
15 16
G04 - RS-485 address
Master stage:Slave stage:
Total power in HP:
Portion of the total capacity:
AIt adjusts the address of the controller in the RS-485 network.Note: One network must not have different instruments with the same address.
pressure control system has an option to control variable capacity compressors and fans by activating digital outputs orusing the analogue output. Using the analogue output the compressor is controlled by means of a frequency inverter and the capacity is directlymodulated by the controller. In the case of activating by the digital outputs, the compressors must be fitted with capacity valves (unloaders) or thefans must be fitted with auxiliary devices (evaporative system). First we have to establish a nomenclature for the components to understandbetter the operation of the logic of the variable capacity compressors and fans using the digital outputs.
It is the output connected directly to the motor of the compressor, i.e. it is the stage that switches the compressor / fan on or off.It is the output connected to the device that changes the capacity of the master stage (unloader or fan auxiliary). One master
stage may have slave stages or not. If there are no slaves the compressor / fan will not have variable capacity. If there are slaves, they may bepresent in any number. One slave stage can only be activated when the master is already active and one master stage can only bedeactivated when all its slaves are switched off.
It is the total power of the master stage together with the slave stages expressed in HP, i.e. it is the maximum power thatthe compressor / fan can exert on the refrigeration system.
It is the portion of power that each stage (master and slave) contributes to the total power in HP. The portions ofthe capacity are adjusted in percentage (%) levels. Thus the sum of the value of the master and the values of the slaves for a samecompressor / fan must be 100%.
The possible combinations in pressure control are adjusted by the parameters "Type of control of the digital outputs" and"Type of control of the analogue output". The possible combinations are:
- Control only by the digital outputs- Control only by the analogue output- Mixed control by the digital outputs and analogue output
Configuring the type of digital control as on and the type of analogue control as off, the pressure control will be performed only by the digitaloutputs. The possible control methods under these conditions are:
- Digital outputs in linear mode- Digital outputs in rotation mode- Digital outputs in capacity mode
The digital outputs will be used in this control mode, and thus the controller will assume only the hysteresis value configured in the function:"digital output hysteresis". The controller will add digital outputs (master and slaves) as the pressure deviates from the setpoint. The activationpoint for each output is calculated in accordance with the hysteresis value and the number of stages (master and slave) configured.
9 - OPERATION
9.1 - Pressure control
Types of control only by the digital outputs
Digital outputs in linear mode
PCT-3000 plus
PCT-3000 plus
Example:Setpoint: 10 psiHysteresis of the digital output: 12 psiNumber of master stages: 4Number of slave stages: 2Configuration of the stages:
OUT 1 Compressor (master 1)
OUT 2 Unloader (slave 1 of master 1)
OUT 3 Compressor (master 2)
OUT 4 Unloader (slave 1 of master 2)
OUT 5 Compressor (master 3)
OUT 6 Compressor (master 4)
In this example the total of digital outputs is 6 (4 master and 2 slave). Thus the step of each digital output is 2 psi (12 psi divided by 6). The firstdigital stage will be activated when the pressure reaches 12 psi (setpoint plus step), the second at 14 psi (setpoint plus 2 times the step), thethird at 16 psi (setpoint plus 3 times the step), and so on. Please note that at 22 psi (setpoint plus digital hysteresis) all digital outputs will be on.
→
→
→
→
→
→
Pressure for activating output "N"
Pressure for deactivating output "N"Activation = Setpoint + (N x Step)
Activation = Setpoint + (N-1 x Step)
Activation step of the digital outputs
Hysteresis of the digital output
Number of master and slave stagesStep =
Description Min. Max.Fun Standard Min. Max. Standard
PSI / °C Bar / °F
Unit.Unit.
Preferred indication
Contrast
Language
RS-485 address
0
0
0
1
6
10
2
247
1
4
0
1
0
0
0
1
6
10
2
247
1
4
0
1
-
-
-
-
G01
G02
G03
G04
-
-
-
-
G01 - Preferred indication
G02 - Contrast
G03 - Language
It allows adjusting the preferred indication in the display.- Screen with the type of each internal pressure switch
- Screen with the pressures of the gas line- Screen with the temperatures of the gas line
- Screen with the liquid line temperatures- Screen with the state of the digital inputs
-All the screens above alternating
It allows adjusting the contrast of the display.
It allows adjusting the language of the controller between Portuguese, English and Spanish.
Info
Liq.L Temp
Rotat
Pressure
Temperat
Dig in
8.6 - General configuration parameters
AXX - Alarm 1 mode
AXX - Pressure switches associated to the alarms
AXX - Alarm X on time
AXX - Alarm X off time
AXX - Alarm X output in reverse mode
It allows adjusting the operating mode of the alarm output xx.- Control switched off-All alarms
- Low pressure alarm- High pressure alarm- All pressure alarms
- Low temperature alarm- High temperature alarm
-All temperature alarms- Digital input alarm- Controller locked alarm- Interlocking alarm
- Low superheating alarm- Critical superheating alarm
- Low efficiency alarm (high superheating)- All superheating alarms
- Maintenance alarms- Pressure sensor error alarm- Temperature sensor error alarm- Error alarm in the liquid line temperature sensor
- Error alarm for any sensor
It allows adjusting which pressure switches the alarm output will be linked to.-All pressure switches
- Pressure switch 1- Pressure switch 2- Pressure switch 3- Pressure switch 4
-All of pressure switch group 1-All suctions of pressure switch group 1
-All of pressure switch group 2-All suctions of pressure switch group 2
It is the time the alarm X output will be active when cycling. To make the output stay continuously on, just configure this function to zero.
It is the time the alarm X output will be deactivated when cycling. To make the output stay continuously on, just configure this function to zero.
It indicates whether the relay of alarm X will close or open the contact in an alarm condition.- Relay contact open when no alarm is present- Relay contact closed when no alarm is present
It allows placing any output of the in maintenance regardless of its function.
Off
All
Low press
Hi press
Pressure
Low temp
Hi temp
Temperat
Dig In
Locked
Remote
Low superh
Crit Super
Low efic
Superheat
Maintenanc
Pres senso
Temp senso
Liq.L sens
Sensors
All
P1
P2
P3
P4
All GP1
Suct GP1
All GP2
Suct GP2
No
Yes
8.5 - Maintenance of the digital outputsPCT-3000 plus
17 18
If more than one combination of stages is able to meet the demand, the combination that changes the state of the smaller number of relays willbe considered.
Setpoint: 10 psiHysteresis of the digital output: 16 psiNumber of master stages: 3Number of slave stages: 5Configuration of the stages:
OUT 1 Compressor (master 1)
OUT 2 Unloader (slave 1 of master 1)
OUT 3 Unloader (slave 2 of master 1)
OUT 4 Unloader (slave 3 of master 1)
OUT 5 Compressor (master 2)
OUT 6 Unloader (slave 1 of master 2)
OUT 7 Unloader (slave 2 of master 2)
OUT 8 Compressor (master 3)
Capacity of the compressors stages:OUT 1 4HP (total capacity of the compressor of master 1)
OUT 5 3HP (total capacity of the compressor of master 2)
OUT 8 3HP (total capacity of the compressor of master 3)----------------------------------------------------------
The sum of capacities is 10HP
Portion of capacitiesOUT 1 40% (40% of the total capacity of the master 1,or, 40% of 4HP 1.6HP)
OUT 2 20% (20% of the total capacity of the master 1, or, 20% of 4HP 0.8HP)
OUT 3 20% (20% of the total capacity of the master 1, or, 20% of 4HP 0.8HP)
OUT 4 20% (20% of the total capacity of the master 1, or, 20% of 4HP 0.8HP)------------------------------------------------------------------------------------------
The sum of the portions is 100%
OUT 5 Compressor (70% of the total capacity of the master 2, or, 70% of 3HP 2.1HP)
OUT 6 Unloader (15% of the total capacity of the master 2, or, 15% of 3HP 0.45HP)
OUT 7 Unloader (15% of the total capacity of the master 2, or, 15% of 3HP 0.45HP)-----------------------------------------------------------------------------------------
The sum of the portions is 100%
OUT 8 Compressor (100% of the total capacity of the master 3, or, 100% of 3HP 3HP)-----------------------------------------------------------------------------------------The s
As the sum of the total capacity is 10 HP, the demand of 100% is equal to 10 HP. Thus the capacity of each stage in relation to the systemdemand is:Note: These values are internally calculated by and do not require to be entered.
OUT 1 16% (1 6HP of 10HP = 16%)
OUT 2 8% (0 8HP of 10HP = 8%)
OUT 3 8% (0 8HP of 10HP = 8%)
OUT 4 8% (0 8HP of 10HP = 8%)
OUT 5 21% (2 1HP of 10HP = 21%)
OUT 6 4 5% (0 45HP of 10HP = 4.5%)
OUT 7 4 5% (0 45HP of 10HP = 4.5%)
OUT 8 30% (3HP of 10HP = 30%)----------------------------
The sum of the portions is 100%
With the values above, we can expect that the levels of operation of the capacity control will be in accordance with the chart forward:
Example:
→
→
→
→
→
→
→
→
→
→
→
→ →
→ →
→ →
→ →
→ →
→ →
→ →
→ →
→
→
→
→
→
→
→
→
.
.
.
.
.
. .
. .
PCT-3000 plu
Pressure measured - SetpointTotal hysteresis x 100Demand (%) =
Digital outputs in capacity modeOnly the digital outputs (master and slave) will be used in this control mode, and thus the controller will assume only the hysteresis valueconfigured in the function: "digital output hysteresis". The activation point for each output is calculated in accordance with the output capacityand the number of stages configured. The activation will occur in accordance with the demand of the system, and the controller will alwaysactivate the set with the smallest number of outputs meeting the current demand. The calculation of the demand is made considering thefollowing formula:
Setpoint
OUT1
OUT1+OUT2
OUT1+OUT2+OUT3
OUT1+OUT2+OUT3+OUT4
OFF
+2 psi
+4 psi
+6 psi
+8 psi
+10 psi
+12 psi
OUT1+OUT2+OUT3+OUT4+OUT5
OUT1+OUT2+OUT3+OUT4+OUT5+OUT6
OUT2+OUT3+OUT4+OUT5+OUT6
OUT3+OUT4+OUT5+OUT6
OUT4+OUT5+OUT6
OUT5+OUT6
OUT6
Digital outputs in rotation modeOnly the digital outputs will be used in this control mode, and thus the controller will assume only the hysteresis value configured in thefunction: "digital output hysteresis". In this mode the digital outputs are controlled in accordance with the number of working hours, so that forswitching on a new stage the controller checks which one has the least working time, and for switching off one stage it checks which one hasthe most working hours. This is aimed at ensuring balance in the operating time of the master stages. In the slave digital stages, the activationtime of the corresponding master is considered.
Setpoint: 10 psiHysteresis of the digital output: 12 psiNumber of master stages: 4Number of slave stages: 2Configuration of the stages:
OUT 1 Compressor (master 1)
OUT 2 Unloader (slave 1 of master 1)
OUT 3 Compressor (master 2)
OUT 4 Unloader (slave 1 of master 2
OUT 5 Compressor (master 3)
OUT 6 Compressor (master 4)
Like in the linear mode, the total of digital outputs is 6 (4 master and 2 slave). Thus the step of each digital output is 2 psi (12 psi divided by 6).Considering that the initial state of the hour meters of all stages is zero, the first digital stage will be switched on when the pressure reaches 12psi (setpoint plus step), the second at 14 psi (setpoint plus 2 times the step), the third at 16 psi (setpoint plus 3 times the step), and so on. Whenthe pressure reaches 22 psi (setpoint plus digital hysteresis) all digital outputs will be on. While a digital output is activated, the correspondinghour meter is incremented. Thus we can conclude that stage 1 will have a higher time than stage 2 because the former was activated earlier.Stage 2 will have a higher time than stage 3 and so on. When the pressure drops below 22 psi and the controller needs to switch off one stage,it will choose the one with more time. In the example in question stage 1 will be chosen.
Example:
→
→
→
→
→
→
+2 psi
+4 psi
+6 psi
+8 psi
Setpoint
OUT1
OUT1+OUT2
OUT1+OUT2+OUT3
OUT1+OUT2+OUT3+OUT4
Hysteresis
Time
+10 psi
+12 psi
OUT1+OUT2+OUT3+OUT4+OUT5
OUT1+OUT2+OUT3+OUT4+OUT5+OUT6
Hysteresis
Time
19 20
OUT1
OUT4
OUT3
OUT2
0%
80 %
20 %
40 %
60 %
100%
Set
poin
t
+5
psi
+10
psi
+15
psi
+20
psi
+25
psi
+30
psi
+35
psi
+40
psi
+45
psi
+45
psi
+40
psi
+25
psi
+0
psi
+5
psi
+10
psi
+15
psi
+20
psi
+30
psi
+35
psi Measured
pressure
Measuredpressure
Analogueoutput
Digitaloutput
Digital outputs in rotation mode with proportional analogue outputIn this mode the digital outputs are controlled in accordance with the number of working hours, so that for switching on a new stage thecontroller checks which one has the least working time, and for switching off one stage it checks which one has the most working hours. This isaimed at ensuring balance in the operating time of the digital outputs. Due to the fact that this operating mode uses digital and analogueoutputs, the controller will assume the hysteresis is equal to the sum of the following functions: "digital output hysteresis" and "analogueoutput hysteresis."
Setpoint: 10 psiHysteresis of the digital outputs: 20 psiNumber of master stages: 2Number of slave stages: 2Analogue output hysteresis: 25 psiTotal hysteresis: 45 psiConfiguration of the stages:
OUT 1 Compressor (master 1)
OUT 2 Unloader (slave 1 of master 1)
OUT 3 Compressor (master 2)
OUT 4 Unloader (slave 1 of master 2)
Example:
→
→
→
→
Example:Setpoint: 10 psiHysteresis of the digital outputs: 20 psiNumber of master stages: 2Number of slave stages: 2Hysteresis of the analogue output: 25 psiTotal hysteresis: 45 psiConfiguration of the stages:
OUT 1 Compressor (master 1)
OUT 2 Unloader (slave 1 of master 1)
OUT 3 Compressor (master 2)
OUT 4 Unloader ((slave 1 of master 2)
In this example the step for each digital output is 5 psi (20 psi divided by 4). The conclusion is that each digital stage corresponds to 20% of theanalogue output (step divided by the analogue hysteresis), or: 5 psi divided by 25 psi. Thus, whenever the controller activates or deactivates adigital stage, the analogue output will be compensated by increasing or decreasing the corresponding portion (20%).
→
→
→
→
AnalogueHysteresis
DigitalHysteresis
DigitalHysteresis
AnalogueHysteresis
0.0
6.2
12.5
18.7
25.0
31.0
37.5%
43.7
50.0
56.2
62.5
68.7
75.0
81.2
87.5
93.7
100
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
Demand
growing
X
X
X
X
X
X
X
X
X
X
X
X
X
X
OUT116%
X
X
X
X
X
X
X
X
OUT28%
X
X
X
X
X
X
X
X
X
OUT830%
X
X
X
X
X
X
X
X
X
X
X
X
X
X
OUT521%
OUT38%
X
X
X
X
X
X
X
OUT64.5%
X
X
OUT74.5%
COMPRESSOR 1 COMPRESSOR 2
X
OUT48%
100.0
93.7
87.5
81.2
75.0
68.7
62.5%
56.2
50.0
43.7
37.5
31.0
25.0
18.7
12.5
6.2
0.0
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
Demand
decreasing
X
X
X
X
X
X
X
X
X
X
X
X
X
OUT116%
X
X
X
X
X
X
X
X
X
X
X
OUT28%
X
X
X
X
X
X
X
OUT830%
X
X
X
X
X
X
X
X
X
OUT38%
X
OUT74.5%
COMPRESSOR 1 COMPRESSOR 2
X
X
X
X
X
OUT48%
X
X
X
X
X
X
X
X
X
X
X
OUT521%
X
X
X
X
X
X
OUT64.5%
25%
0%
50%
75 %
100%
Set
poin
t
+5
psi
+10
psi
+15
psi
+20
psi
+25
psi
+15
psi
9.1.3 - Mixed control by the digital outputs and analogue outputConfiguring the type of digital control as on and the type of analogue control as on, the pressure control will be performed by both types ofoutputs. The possible control methods under these conditions are:
- Digital outputs in linear mode with proportional analogue output- Digital outputs in rotation mode with proportional analogue output- Digital outputs in capacity mode with proportional analogue output
Proportional analogue outputOnly the analogue output will be used in this control mode, and thus the controller will assume only the hysteresis value configured in thefunction: "analogue output hysteresis." When the measured pressure drops below the setpoint, the analogue output will be at 0%. When thepressure rises above the setpoint, the value of the analogue output will increase until the measured pressure reaches a value equivalent tothe setpoint plus the hysteresis, and then the proportional output will have 100% power.
Setpoint: 10 psiAnalogue output hysteresis: 20 psi
Example:
9.1.2 - Type of control only by the analogue outputConfiguring the type of digital control as off and the type of analogue control as on, the pressure control will be performed only by the analogueoutput. The possible control methods under these conditions are:
Measuredpressure
Analogueoutput
Digital outputs in linear mode with proportional analogue outputIn this mode, the digital outputs will be activated whenever the analogue output reaches the maximum value (100%). The activation sequenceof the digital loads will be linear as explained before. Due to the fact that this operating mode uses digital and analogue outputs, the controllerwill assume the hysteresis is equal to the sum of the following functions: "digital output hysteresis" and "analogue output hysteresis.”
Activation step of the digital outputs
Hysteresis of the digital output
Number of master and slave stagesStep =
21 22
9.2 - Superheating monitoring
9.2.1 - Alarm generation
9.2.2 - Compressor protection
9.3 - Suction liquid collection system
9.4 - Condensation temperature control (liquid line)
With the adjusted gas curve, is able to calculate the superheating for different suctions in the refrigeration system. Thesevalues help monitoring the system efficiency and can also be used to activate the protection system against liquid in the suction line, as well as togenerate miscellaneous alarms.
The superheating monitoring uses three parameters to generate alarms:When the calculated superheating temperature is above this value, the internal pressure switch will
activate the low efficiency alarm.When the calculated superheating temperature is below this value, the internal pressure switch will
activate the low superheating alarm.When the calculated superheating temperature is below this value, the internal pressure switch will
activate the critical superheating alarm.
The superheating monitoring uses two parameters to determine the degree of protection for the compressors:When the calculated superheating temperatures is below this value, will only
activate the liquid collection output (if any) and keep the compressors working normally.When the calculated superheating temperatures is below this value, will switch
off all compressors and keep the liquid collection output (if any) activated.
The liquid collection system uses a digital output (if configured) to activate a valve to remove the liquid from the suction line. This output will beactivated whenever all compressors are deactivated or the compressor protection system requests it. When the last active compressor is aboutto be deactivated, can keep it activated together with the collection output, so that the compressor makes the refrigerantcirculate to the tank. The time the compressor will stay active can be adjusted in the "Time for liquid collection" parameter. If the last activecompressor is linked to the analogue output, it will stay at the minimum value adjusted in the "Minimum value of the analogue output" parameter.
The condensation temperature is controlled by the output of the discharge pressure switch. The user can use this output to activate one or twoextra expansion valves to cool the fins of the condenser to increase its efficiency. The extra expansion valve is controlled by function-specificsetpoint and two hysteresis, the outputs can be activated by the following modes:
Only 1 output and 1 hysteresis will be used to actuate the extra expansion valve.2 outputs and 2 hystereses will be used to actuate the extra expansion valves, both of which may be activated
simultaneously.2 outputs and 2 hystereses will be used to actuate the extra expansion valves; however, only one at a time can be
activated.
PCT-3000 plus
PCT-3000 plus
PCT-3000 plus
PCT-3000 plus
High superheating temperature:
Low superheating temperature:
Critical superheating temperature:
Low superheating temperature:
Critical superheating temperature:
Only 1 output:2 independent outputs:
2 interpolated outputs:
AN 1 50 0%(4HP of 8HP = 50.0%)---------------------------------------------The sum of the portions is 100%
With the values above, we can expect that the levels of operation of the capacity control will be in accordance with the chart below:
→ .
0.0
10.0
20.0
30.0
40.0
50.0
60.0%
70.0
80.0
90.0
100.0
%
%
%
%
%
%
%
%
%
%
COMPRESSOR1
COMPRESSOR2
COMPRESSOR3
X
X
X
OUT118.75%
X
X
X
X
X
OUT312.50%
X
OUT26.25%
X
X
X
OUT412.50%
0.0%
20.0%
40.0%
60.0%
80.0%
100.0%
95.0%
90.0%
97.0%
92.0%
100.0%
AN150.00%
100.0
90.0
80.0
70.0
60.0
50.0
40.0%
30.0
20.0
10.0
0.0
%
%
%
%
%
%
%
%
%
%
COMPRESSOR1
COMPRESSOR2
COMPRESSOR3
X
X
X
X
X
X
X
OUT118.75%
X
X
X
X
X
X
X
X
X
OUT312.50%
X
X
X
X
X
X
OUT26.25%
X
X
X
X
X
X
OUT412.50%
100.0%
80.0%
60.0%
40.0%
20.0%
10.0%
17.0%
35.0%
15.0%
20.0%
0.0%
AN150.00%
Demand
growing
Demand
decreasing
OUT1
OUT4
OUT3
OUT2
0%
80 %
20 %
40 %
60 %
100%
Set
poin
t
+5
psi
+10
psi
+15
psi
+20
psi
+25
psi
+30
psi
+35
psi
+40
psi
+45
psi
+45
psi
+40
psi
+25
psi
+0
psi
+5
psi
+10
psi
+15
psi
+20
psi
+30
psi
+35
psi Measured
pressure
Measuredpressure
Analogueoutput
Digitaloutputs
Digital outputs in capacity mode with proportional analogue outputIn this operating mode the analogue output works together with the digital outputs in such a way to meet the full system demand. Theactivation point for each digital output is calculated in accordance with the output capacity and the number of stages configured. The activationwill be made such that the digital stages meet most of the demand, thus leaving only the residual needs for the analogue output. Due to the factthat this operating mode uses digital and analogue outputs, the controller will assume the hysteresis is equal to the sum of the followingfunctions: "digital output hysteresis" and "analogue output hysteresis."
Setpoint: 10 psiHysteresis of the digital outputs: 20 psiNumber of master stages: 2Number of slave stages: 2Analogue Output Capacity: 4HPMinimum value of the analogue output: 10%Analogue output hysteresis: 10 psiTotal hysteresis: 30 psiConfiguration of the stages:
OUT 1 Compressor (master 1)
OUT 2 Unloader (slave 1 of master 1)
OUT 3 Compressor (master 2)
OUT 4 Unloader (slave 1 of master 2)
Capacity of the compressors stages:OUT 1 2HP (total capacity of the compressor of master 1)
OUT 3 2HP (total capacity of the compressor of master 2)---------------------------------------------------------------------------------The sum of capacities is 8HP (2 + 2 + 4HP of the nalogue output)
Portion of capacitiesOUT 1 75% (75% of the total capacity of the master 1,or, 75% of 2HP 1,5HP)
OUT 2 25% (25% of the total capacity of the master 1,or, 25% de 2HP 0,5HP)------ ---------------------------------------------------------------------------------
The sum of the portions is 100%
OUT 3 50% (50% of the total capacity of the master 2, or , 50% of 2HP 1HP)
OUT 4 50% (50%of the total capacity of the master 2, or , 50% of 2HP 1HP)----------------------------------------------------------------------------------------
The sum of the portions is 100%
As the sum of the total capacity is 8 HP, the demand of 100% is equal to 8 HP. Thus the capacity of each digital and analogue stage in relationto the system demand is: : These values are calculated internally by the and don´t need to be typed.
OUT 1 18.75% (1.5HP of 8HP = 18.75%)
OUT 2 6.25% (0.5HP of 8HP = 6.25%)
OUT 3 12.5 % (1HP of 8HP = 12.5%)
OUT 4 12.5 % (1HP of 8HP = 12.5 %)
Example:
NOTE
→
→
→
→
→
→
→ →
→ →
→ →
→ →
→
→
→
→
PCT-3000 plus
Considering that the initial state of the hour meters of all stages is zero, the first digital stage will be switched on when the analogue outputreaches 100% is OUT 1. Being the first to be switched on, it will be also the first to be switched off as it will have the highest number of workinghours.
analogueHysteresis
DigitalHysteresis
DigitalHysteresis
analogueHysteresis
23 24
9.8.2 - Activation of the alarm outputsPCT-3000 plus can have up to four alarm outputs, which can be configured to be activated by different conditions and by more than oneinternal pressure switch. The available options for activation are:
The output will be activated when any type of alarm is activated for one of the linked pressure switches.
The output will be activated when the low pressure alarm is activated for one of the linked pressure switches.
The output will be activated when the high pressure alarm is activated for one of the linked pressure switches.
The output will be activated when the high or low pressure alarm is activated for one of the linked pressure switches.
The output will be activated when the low temperature alarm is activated for one of the linked pressure switches.
The output will be activated when the high temperature alarm is activated for one of the linked pressure switches.
The output will be activated when the high or low temperature alarm is activated for one of the linked pressureswitches.
The output will be activated when the external alarm of the digital input is activated for one of the linked pressureswitches.
The output will be activated when any linked pressure switch is locked (waiting for reset).
The output will be activated when the interlocking alarm is activated for one of the linked pressure switches.
The output will be activated when the low superheating alarm is activated for one of the linked pressure switches.
The output will be activated when the critical superheating alarm is activated for one of the linked pressureswitches.
All alarms:
Low pressure alarm:
High pressure alarm:
All pressure alarms:
Low temperature alarm:
High temperature alarm:
All temperature alarms:
Digital input alarm:
Locked controller alarm:
Interlocking alarm:
Low superheating alarm:
Critical superheating alarm:
Only if the
s
is active
Never
Never
Never
uperheating
P1
P2
P3
P4
P1
P2
P3
P4
Only if the
s
is active
Only if the
s
is active
Never
Never
uperheating
uperheating
Only if the
s
is active
Only if the
s
is active
Only if the
s
is active
Never
uperheating
uperheating
uperheating
Only if the
s
is active
Never
Only if the
s
is active
Never
uperheating
uperheating
Ext
erna
l ala
rm o
f the
digi
tal i
nput
P1
P2
P3
P4
Sup
erhe
atin
g al
arm
Inte
rloc
king
ala
rm
P1
P2
P3
P4
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Never
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Hig
h an
d lo
w p
ress
ure
alar
m
Never
Only if the sensor
is active
Never
NeverHig
h te
mpe
ratu
re a
larm
P1
P2
P3
P4
Never
Never
Only if the sensor
is active
Never
Never
Never
Never
Only if the sensor
is active
Never
Only if the sensor
is active
Never
Only if the sensor
is active
Always
Always
Never
Never
Err
or in
the
tem
pert
ure
sens
orof
the
liqui
d lin
e
P1
P2
P3
P4
Always
Always
Always
Never
Always
Always
Always
Always
Always
Always
Always
Always
Only if thecondensationtemperature
control mode isactive
Never
Never
Never
Only if thecondensationtemperature
control mode isactive
Never
Never
Never
Only if thecondensationtemperature
control mode isactive
Never
Never
Never
Only if thecondensationtemperature
control mode isactive
Never
Never
Only if thecondensationtemperature
control mode isactive
P1
P2
P3
P4
Always
(between
P1 and P2)
Always
(between
P1 and P2)
Never
Never
Always
(between
P1, P2 and P3)
Always
(between
P1, P2 and P3)
Always
(between
P1, P2 and P3)
Never
Always
(between
P1, P2, P3 and P4)
Always
(between
P1, P2, P3 and P4)
Always
(between
P1, P2, P3 and P4)
Always
(between
P1, P2, P3 and P4)
Always
(between
P1 and P2)
Always
(between
P1 and P2)
Always
(between
P3 and P4)
Always
(between
P3 and P4)
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Never
Never
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Never
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Only if anyalarm-type digital
input is linked
Err
or in
the
pres
sure
sen
sor
of th
e th
e ga
s lin
e
Only if the
temperature sensor
is active
Only if the
temperature sensor
is active
Never
Never
9.7 - Digital inputs
9.8 - Alarm system
9.8.1 - Monitoring of the alarm conditions
PCT-3000 plus
PCT-3000 plus
PCT-3000 plus
has five digital inputs, which can be used for the following functions:-Daytime / nighttime setpoint selector-External alarm to switch on all pressure control outputs-External alarm to switch off all pressure control outputs
In addition to the function, it allows defining which internal pressure switch is associated to each digital input.
The alarm system of is divided into two parts:- Monitoring of the alarm conditions- Activation of the alarm outputs
The alarm conditions are monitored regardless of the configuration of the digital outputs as alarms.will always monitor the error alarms for the pressure sensor and, if this is operating, the high and low pressure alarms.
The remaining alarms are monitored depending on whether they are active or not. The table below shows the monitoring conditions for allalarms.
9.5 - Breeze system control
9.6 - Digital outputs
9.6.1 - Type of stage
9.6.2 - Mode of the relays
9.6.3 - Total capacity of the compressor / fan
9.6.4 - Capacity portions
The breeze system is controlled based on the discharge pressure of the refrigeration system. When the measured pressure exceeds the user-defined adjustment, the breeze-type output (if any) is activated. This output can be connected to an evaporative refrigeration system aimed atcooling the fins of the condenser to increase its efficiency.
The digital outputs of must be configured in four steps:
The menu “Pressure switches” “Stages” allows adjusting the functions associated to each relay. The available options are:
- Free stage, always .- Master stage of the compressor.
- Slave stage of the compressor. This stage must be in the sequence of its master stage or in the sequence of another slave stage(master with more than one slave).
- Suction liquid collection system.- Master stage of the fan.
- Slave stage of the fan. This stage must be in the sequence of its master stage or in the sequence of another slave stage (masterwith more than one slave).
- Stage 1 of the condensation temperature control.- Stage 2 of the condensation temperature control. This stage should be following the first stage.
- Output of the breeze system control.
The menu “Pressure switches Relay mode” allows defining the state of the relay when the respective stage is active or not. As thisconfiguration is individual for each relay, it gives a great versatility for the type of activation that the controller will perform.
The menu “Pressure switches Compressor / fan capacity” allows defining the full capacity (in HP) of the compressors or fans. Such capacityis the maximum capacity a compressor or fan can provide to the refrigeration system, regardless of having slave stages or not.
The menu “Pressure switches Capacity portions” allows defining the portion (%) that each master and slave stage represents for therespective compressors / fans. It is this portion together with the total capacity that will define the individual capacity of each master and slavein the refrigeration system.
PCT-3000 plus
→
→
→
→
Off
Compressor
Unloader
Liq Collec
Fan
Fan aux
Subcool. 1
Subcool. 2
Breeze
off
P1
P2
P3
P4Low
tem
pera
ture
ala
rm
Err
or in
the
pres
sure
sen
sor
of th
e th
e ga
s lin
e
P1
P2
P3
P4
1 suc / 1 disch. 2 suc / 1 disch. 3 suc / 1 disch. 2 suc / 2 disch.Alarm1 suc / 1 disch. 2 suc / 1 disch. 3 suc / 1 disch. 2 suc / 2 disch.Alarm
Always
Always
Always
Always
Only if the sensor
is active
Never
Only if the sensor
is active
Never
Only if the sensor
is active
Only if the sensor
is active
Only if the sensor is
active
Never
Only if the sensor
is active
Only if the sensor
is active
Never
Never
Only if the sensor
is active
Never
Never
Never
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Always
Never
25 26
10 - DISPLAY INDICATION
10.1 - Main screen
The information is viewed in the display by means of three types of screens: main, secondary, and notification.
The main screen is the one the controller shows in the display when no operation is being performed. has five differentvariations of the main screen. The user can select which one will be used through the advanced parameter "Preferred indication". The availablescreens are:
- Screen indicating the type of each internal pressure switch
- Screen indicating the pressure measured by each internal pressure switch in the gas line
- Screen indicating the temperature measured by each internal pressure switch in the gas line
- Screen indicating the type of each internal pressure switch
- Screen indicating the state of each digital input
PCT-3000 plus
PCT-3000 plus
Info
Pressure
Temperat
Liq.L Temp
Dig in
9.10 - Interlocking system
9.10.1 - Suction type pressure switches
9.10.2 - Discharge type pressure switches
9.11 - Activation priority
As described under “Pressure switch groups according to operation mode”, the interlocking system runs only between same group pressureswitches.
- Alarm of low pressure in the pressure switch itself:All stages of the respective pressure switch will be deactivated.- Alarm of high pressure in the pressure switch itself:All stages of the respective pressure switch will be activated.- Alarm of low temperature in the pressure switch itself:All stages of the respective pressure switch will be deactivated.- Locked pressure switch (waiting for manual reset): If any other suction pressure switch is present in the group, only the stages of therespective pressure switch will be deactivated. If there are no other pressure switches, all stages of the respective pressure switch and thedischarge stage will be deactivated.- Alarm of low pressure at the group discharge: No action will be taken for the suction outputs.- Alarm of high pressure at the discharge:All suction stages of the group will be deactivated.- Alarm of high temperature at the discharge:All suction stages of the group will be deactivated.- Locked discharge pressure switch (waiting for manual reset):All suction stages of the group will be deactivated.
-Alarm of low pressure in the pressure switch itself:All stages of the respective pressure switch will be deactivated.-Alarm of high pressure in the pressure switch itself:All stages of the respective pressure switch will be activated and all suction stages ofthe group will be deactivated.-Alarm of high temperature in the pressure switch itself:All stages of the respective pressure switch will be activated and all suctionstages of the group will be deactivated.- Locked pressure switch (waiting for manual reset):All stages of all pressure switches in the group will be deactivated.-Alarm of low pressure at the suction of the group: No action will be taken for the discharge outputs.-Alarm of high pressure at the suction of the group: No action will be taken for the discharge outputs.-Alarm of high temperature at the suction of the group: No action will be taken for the discharge outputs.-Any suction pressure switch of the group locked (waiting for manual reset): If only one suction pressure switch is present at the group, allstages in the group will deactivated. If there are ore than one suction present at the group, only the locked suction stages will bedeactivated.
considers the following priority order for making decisions on which state the outputs of each pressure switch must assume.- Output in maintenance mode (switch off the output)- Locked pressure switch (switch off the outputs)- External alarm of the digital output (depends on the configuration; may switch the output on or off)- Sensor error (depends on the configuration; may switch the outputs on or off)- Internal alarm of high / low pressure or high / low temperature (may switch the outputs on or off depending on the alarm)
m
PCT-3000 plusPriority 1Priority 2Priority 3Priority 4Priority 5
P1:Suct P2:DiscP3:Suct P4:Disc
1Ä 22Ç 2Å 300Ç3Ä 49Ç 4Å 297Ç
1É 0.4# 2Ñ38.4#3É -15# 4Ñ68.9#
Dig inputsá á à à â1 2 3 4 5
1Ö35.7# 2Ö40.2#3î60.7#
Low efficiency alarm:
All superheating alarms:
Maintenance alarm:
Pressure sensor error alarm:
Temperature sensor error alarm:
Liquid line sensor error alarm:
Error alarm for any sensor:
All pressure switches:
Pressure switch 1:
Pressure switch 2:
Pressure switch 3:
Pressure switch 4:
All of pressure switch group 1:
All suctions of pressure switches group 1:
All of pressure switch group 2:
All suctions of group 2 pressure switches:
The output will be activated when the high superheating alarm (low efficiency) is activated for one of the linkedpressure switches.
The output will be activated when any of the superheating alarms (high, low or critical) is activated for one of thelinked pressure switches.
The output will be activated when there is one or more maintenance alarms for one of the linked pressure switches.
The output will be activated when the error alarm of the gas line pressure sensor is activated for one of thelinked pressure switches.
The output will be activated when the error alarm of the gas line temperature sensor is activated for one ofthe linked pressure switches.
The output will be activated when the error alarm of liquid line temperature sensor is activated for one of thelinked pressure switches.
The output will be activated when any error alarm for a sensor is activated for one of the linked pressureswitches.
The outputs can be linked to the internal pressure switches in the following ways:
The output will be linked to the alarms of all internal pressure switches in the operating mode.
The output will be linked only to the alarms of the internal pressure switch 1 (P1).
The output will be linked only to the alarms of the internal pressure switch 2 (P2).
The output will be linked only to the alarms of the internal pressure switch 3 (P3).
The output will be linked only to the alarms of the internal pressure switch 4 (P4).
The output will be linked only to the alarm switches that form the Group 1 (GP1) of the current operatingmode.
The output will be linked only to the alarms of the Group 1 (GP1) suction pressure switches ofthe current operating mode.
The output will be linked only to the alarm switches that form the Group 2 (GP2) of the current operatingmode.
The output will be linked only to the alarms of the Group 2 (GP2) suction pressure switches ofthe current operating mode.
is equipped with a system that locks the internal pressure switches when a number of alarms is generated within a certaintime. Whenever possible, the controller will try to correct the problem that generated the alarm. The reset system allows for the user to configurehow many times the will try the automatic correction (automatic reset) before quitting and switching off all loads (controllerlocked). The user must set how many automatic resets the controller can perform within a certain time. Each internal pressure switch can havean individual adjustment of these parameters. The table below lists which alarms are considered by the reset system. Those not considered willnever lock the controller.
9.9 - Reset systemPCT-3000 plus
PCT-3000 plus
AlarmAssociated withthe reset system
Error in the gas line pressure sensor
Error in the gas line temperature sensor
Error in the liquid line temperature sensor
Error calculating the ideal expansion temperature
Low pressure alarm
High pressure alarm
Low temperature alarm
Yes
Yes
Yes
No
Yes
Yes
Yes
AlarmAssociated withthe reset system
High temperature alarm
Remote alarm of the digital input
Interlocking alarm
Low superheating alarm
Critical superheating alarm
Low efficiency alarm
Maintenance alarm
Yes
Yes
Yes
No
No
No
No
27 28
10.2.3 - General Information ( )êThis indication allows viewing several information relating to the internal pressure switches. The available options and the respective indexeson the screen are:
- Type of pressure switch- Instantaneous pressure and temperature of the gas line- Instantaneous demand and setpoint- Instantaneous liquid line temperature- Instantaneous ideal expansion temperature and instantaneous superheating temperature- Current percentage of the analogue output
1
2
3
4
5
6
P1 Suction |ê1|S1
Acronym and type of pressure switch Pressure and temperature of the discharge
D: 300Ç 38.4#|ê2S: 27Ç 0.4#|S1
Pressure and temperature of the pressure switch
Dem Setp 358.3ç 20Ç ë|S1
|ê
Demand
Liq.L Temp |ê450.9# |S1
Analog out |ê678.8ç |S1
Exp Suphe |ê51.2# 30.5# |S1
Setpoint Liquid linetemperature
Ideal expansiontemperature
Value of analogue output
Indication that thesetpoint is for night time
Superheatingtemperature
10.2.4 - Alarms ( )äThis indication allows viewing which alarms are active for each internal pressure switch. The available options and the respective indexes onthe screen are:
- Error alarm in the pressure and temperature sensors of the gas line and liquid line temperature- Low and high pressure alarms- Low / high temperature alarm and error calculating the ideal expansion temperature- High and low superheating alarms- Critical superheating and maintenance hours alarm- Digital input and interlocking alarms
1
2
3
4
5
6
Pres alrm â|ä2àlo àhi |D1
Other alrm |ä5âàcrit àmaint |D1
Remote alrm |ä6âádig àinter |D1
Temp alrm â|ä3àhi àexp |D1
Superh alrm â|ä4áhi àlo |D1
The informations included on the screens are:
Sense alrm â|ä1áP àT àS |D1
Gas linePressure
Gas lineTemperature
Liquid lineTemperature
Lowpressure
Highpressure
Gas linePressure
Expansiontemperature
High superheating Low superheating
Criticalsuperheating
Maintenance Digital input Interlocking
10.2.1 - Minimums and maximums ( )ãThis indication allows viewing the minimum and maximum values measured by a pressure switch.The recorded data is presented in pairs, using one screen for each measurement. The available options and the respective indexes on thescreen are:
- Gas line pressure- Gas line temperature- Liquid line temperature- Ideal expansion temperature- Superheating temperature- Demand
The information included on the screen of this indication is:
1
2
3
5
6
4
Dem Setp |ê358.3ç 20Ç |S1
Pressure switch
Data Data type
Index screen
Whenever the controller is showing a secondary indication screen the led of the respective pressure switch will be on, backing up theindication of the abbreviation already shown in the display.To browse the screens of one type of data, just press or . Note that the index on the screen changes as the user presses the keys.To change the selection of the pressure switch being displayed, just press or . Note that the abbreviation and the led of the pressureswitch change as the keys are pressed.To exit the secondary indication and return, quickly press the key or leave the keyboard idle for more than 2 minutes.
The types of data available in the for secondary viewing are:PCT-3000 plus
ã
é
ê
ä
- Minimums and maximums
- Hour meters
- General information
- Alarms
When is displaying these screens, the leds of the outputs are used to indicate which stages are active in the moment. Anyoutput that is activated will be marked with the color of the respective pressure switch / alarm.
The secondary screens are accessed through the quick access keys and are used by the to show specific details of theinternal functions. Each secondary indication shows specific data of a single pressure switch. Each screen will show which pressure switch theinformation on the screen corresponds to. In addition, each screen will have an indication of the type of data and an index of the information.
PCT-3000 plus
PCT-3000 plus
10.2 - Secondary screens
Maximum
Measure name Index screen
Minimum value
Demand | 60.0 @ 58.3 |S1ç ç
Data type
Out |énr 01 326H19m í |S1
10.2.2 - Hour meters ( )éThis indication allows viewing the working hours for each digital output configured as part of a compressor or fan. The recorded hours arepresented individually, one for each digital output. When the is showing the indication of working hours, the leds of theoutputs indicate the stage that corresponds to the hour meter. The output being shown is marked with white color while the other outputsremain with the color of the respective pressure switch
The information included on the screen is:
PCT-3000 plus
.
Maintenance Alarm
Output number
Hours worked
29 30
TRILHO DIN
WALL
PCT-3000 Plus
12. INSTRUMENT FIXATION MODE
12.1 DIN mount fixation
DIN rail
Wall Instrument
12.2 Screw fixation (wall-mounted)
Screw for fixation(Installed from the front side)
10.3 - Notification screens
10.3.1 - Alarms
The notification screens are displayed quickly when any sporadic event occurs in the controller. These events are:
This screen will cycle together with the main screen whenever there is any alarm in an internal pressure switch. The alarm notification screenallows viewing which pressure switches have active alarms and even which pressure switches are locked. Knowing this allows accessingmore details of the active alarms using the secondary indication screens.
Plocked
ressure switch Pressure switchwithout alarm
Pressure switchwith alarm
AlarmsâP1 àP2 áP3 áP4
10.3.2 - Data reception through the serial portThis screen will be shown for 2 seconds when the controller is in the main screen and receives a command through the communication port.
Serialcommunication
11 - QUICK ACCESS KEYS
11.1 - Alternate the indication of the main screenTo alternate to other views, press the key until the desired indication is displayed. The alternative view will be shown for 15seconds and then the main screen will return to the indication adjusted in the "Preferred indication" function. The sequence of options isas follows:
Info Pressure Temperat Liq.L Temp Dig in
11.2 - View and reset minimums and maximums
11.3 - View the hour meters and reset the maintenance alarms
11.4 - View the general information
The secondary screen for minimums and maximums can be accessed by pressing the key. To reset the record being displayed, just press thekey for 2 seconds.
The secondary screen for the hour meters can be accessed by pressing the key. To reset the record being displayed, just press thekey for 2 seconds.
The secondary screen for the hour meters can be accessed by pressing the key.
11.5 - View alarms and reset the pressure switchThe secondary screen for viewing the alarms can be accessed by pressing the key. To reset the pressure switch being displayed, just pressthe key for 2 seconds.
31 32
®
13 INTEGRATING CONTROLLERS, RS-485 SERIAL INTERFACE AND COMPUTER-
A
B
A A
B B
A B
terminalgroundedDistribution Box
Used to connect more than one instrument to theInterface. The wire's connections must be made inagreement with the following rules: terminal of theinstrument connects to the terminal of thedistribution box, that must be connected with theterminal of the Interface. Repeat the action forterminals and , being the cable shield.
AA
AB
The terminal of distribution box must be connectedto the respective terminals of each instrument.
RS-485 Serial Interface
®
Device used to establish theconnection Full Gauge Controls’instruments with the Sitrad .
Serial interfaceRS-485
Full GaugeExternalmesh
RS-485 Network
IMPORTANT
1:2:3:
As chapters of IEC 60 364 norms:Install protectors against over voltage on power supplySensor cables and computer signals can be together, however not at the same place where power supplyAnd load drive pass for.Install suppresor of transient (RC filters) in parallel to loads, as for to increase the useful life of the relays.
A1 and A2 are thecontactor coil.S
uppr
esor
A1
A2
Wiring diagram of suppresor in contactors
PCT-3000 plus
Full GaugeControls
ENVIRONMENTAL INFORMATIONPackage:
Products:
Disposal:
The packages material are 100% recyclable. Just dispose it through specializedrecyclers.
The electro components of Full Gauge controllers can be recycled or reused if it isdisassembled for specialized companies.
Do not burn or throw in domestic garbage the controllers which have reached the end-of-life. Observe the respectively law in your region concerning the environmentalresponsible manner of dispose its devices. In case of any doubts, contact Full Gaugecontrols for assistance.
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