-
SF-108
/
12V
/ / / /
/ / / / /
F0 00= 1=
1 601 90
0 24
20
60
6
32 86 0 30
46 8
F1
F2
F3
F4
4545
3135
212100
6820
1 36 1 20
7 4
0 10 2
36 36 20 20
0
0
E1
E2
E3
E4
E5
E6
=1=
F5
C1
C2
C3
C4
= =36 36 20 20
0E7
36 36 20 20
C517 680
0 2480 120
4545
212100
104 40
4040
SF-108
-
( 45 / 45 ) 30 , 15
45 / 45 )
45 / 45
6
1 12V 2 3 1004
1 3 2 1 3 1
11 44 88 99
5A5A
1010 1111 121211 22 33 44 55 88 99
30A30A
1010 1111 1212
10A / 250VAC10A / 250VAC
11 44 88 99 1010 1111 121211 22 33 44 55 88 99 1010 1111
121212VAC12VAC
~ ~
77
-
Features of Function Mini-sized and integrated intelligent
control and applicable to the compressor of one HP. Temperature
Display/ Temperature Control/ Manual, automatic defrost by electric
heater / hot gas /Evap. Fan Control/ Time temperature setting to
end defrosting / High low temperature alarm / Condenser high
temperature alarm / Value Storing/ Self Testing
Specifications 1. Output of the outside sealed
transformer:AC12V(one transformer matched with one temp.
controller)2. Temperature sensor:NTC,Three sensors(cold room
temp./defrost control/c ),2m(L)3. Range of temperature displayed :
45 150 ( 1
45 100 (
(14
ondenser high temp. alarm45~302 ) Accuracy: ( 2 )
4. Range of set temperature: 45~212 ) Factory default : 0 (32
)5. Dimension:77(Length) 35(Width) 70(Depth)mm Mounting hole
dimension:71(Length) 29(Width)mm6. Temperature of the operating
environment: 10 60 ~140 ) Relative
Humidity:20%~90%(Non-condensing)7. Output contact capacity:
Compressor: N.O. 30A/250VAC(applicable to 1 HP compressor,if more
it needs to connect an AC contactor) Defrost:
N.O.10A/250VAC(applicable to 1KW load, if more it needs to connect
an AC contactor) Evap. Fan: N.O. 5A/250VAC
Model: SF-108 Digital Temperature Controller
Front Panel Operation1. Set temperature Press button, the set
temperature is displayed. Press or button again to modify and store
the displayed value.Press button to exit the adjustment and display
the cold-room temperature. If no more button is pressed within 10
seconds, the cold-room temperature will be displayed.2. Condenser
temperature display:Press button and hold for 6 seconds, the
condensor temperatuer will display and flash. After 6 seconds, it
returns to normal operation.3. Evap. Sensor temperature display:
Press button, evap. sensor temperature will display and flash,
after 6 seconds, it returns to cold room temperature. 4. Manual
start/stop defrost: Press button and hold for 6 seconds to defrost
or stop defrost.5. Refrigerating LED: During refrigerating, the LED
is on; when the cold-room temp. is constant, the LED is off; during
the delay, the LED flashes. 6. Defrost LED:during defrosting,the
LED is on;during temperature delay display after defrost,the LED
flashes.7. Parameters setup Press button for 6 seconds to enter the
parameter setup mode while E1 flashes. Press again button to select
sequentially from the parameters: E2,E3,E4,E5,E6,E7,F0~C5,E1. Press
or button, the value of parameter will be displayed and can be
modified and stored. If no more button is pressed within 6 seconds,
it will return to normal operation mode.
SF-108
100212
2068
1 20 /1 36 4 /7
20 2036 3620 2036 3620 2036 36
0
0
0
0
0
0
F4
F5
Parameter Parameter
Set temp.
Set temp.
0 10Min 2Min
E1
E2
E3
E4
E5
E6
E7
0=Normal display1 = Last value before defrost
0=Parallel with comp.1 = Continuous running except defrost
FunctionFunction Set range Set rangeDefault Default
Lower setpoint limit
Higher setpoint limit
Temp. Hysteresis
Comp.start delay time
Offset on room temp.
Offset on evap. temp.
Offset on condens
Defrost function
Display during defrost
Fan operating function
4545
3531
=Celsius =Fahr. Temperature unitC1
0 30 /32 86846
1 60Min
0=Electric heater1=Hot gas
0 24Hr
20Min
4Hr
F1
F0
F2
F3
Max. Defrost duration
Defrost interval time
Defrost termination temp.
High temperature alarm
Alarm time delay
Condenser high temperature alarm value
1~90 Min 60Min
C2
C3
C4
C5
Low temperature alarm
40104
40
40
80176
0~1200~248
45
45
100 212
C3
C2
~
~
-
Function details1. Temperature control After turning on for
delay time, the compressor starts operating when cold room
temperature (set temp. + Hysteresis E3), and will be off when cold
room temperature set temp. To protect the compressor,it can not
re-start unless the time when the compressor stops every time is
longer than the delay time (Parameter E4). 2. Defrosting Functions
(F0=0=defrost by electric heater;F0=1=defrost by hot gas) Electric
heating defrost: The defrost LED and the heater will turn on, the
compressor will stop. When the defrost duration ends, the heater
will stop. After 2 minutes dripping time it will exit defrost
state, the compressor will start after delay time the evaporation
fan will run. Hot gas defrost: The defrost LED will turn on, the
valve and the compressor will turnon. When the defrost duration
ends, the compressor will stop. After dripping time the valve will
turn off, compressor will restart -up, after 2 minutes the fan will
run. Enter the defrost status: It defrosts and heats only if the
temp. of the evap. sensor is less than the defrost termination
temperature (Parameter F3). Exit the defrost status:When the
temperature of the evap. sensor is over the defrost termination
temp. or the defrost duration end, it will exit the defrost status.
When the defrost interval time is set to" 00", the function of
automatic defrost will be cancelled.3. Display during defrost When
setting the parameter F4=1,the room temp. is locked during defrost,
and the last value before defrost is displayed. When defrost ends,
normal display will be resumed after 20 minutes delay of room temp.
display.(or reaches set temperature) The defrost LED flashes during
the delay.4. High/low temperature overrun alarm Set temperature
adjustment must be between low temperature alarm value(C3) and high
temperature alarm value (C2). After the first time turning off
compressor, when cold-room temperature exceeds high temperature
alarm value (parameter C2), or is lower than low temperature alarm
value (parameter C3), after alarm delay time (parameter C4)the
display will flash,the buzzer will sound,the sound can be stopped
by pressing random key. When condenser temperature reaches set
temperature value (Parameter C5), if the temperature has not
dropped down yet,all the control outputs will be stopped, " HI "and
cold-room temperature will be displayed alternatively, the alarm
buzzer will sound. When condenser temperature is lower than set
temperature (parameter C5), the compressor starts according to
normal temperature control. During high temperature alarm, it will
stop defrosting, the compressor will start, the fan operate
according to parameter F5; during low temperature alarm, the
compressor will stop, it defrosts normally. The fan will operate
according to parameter F5.5. Abnormal work mode: When room sensor
is short-circuited or overheated (more than150 /302 ) " 1H" will
display; When room sensor is open-circuited or temperature is too
low (less than / ) " 1L" will display. At that time the compressor
works automatically by the cycle of 30 minutes on and 15 minutes
off. When evap. sensor is short-circuited or overheats (more than
150 /302 ), "2H " will display; when evap. sensor is open-circuited
or temperature is too low (less than / ), "2L " will display the
buzzer will sound. When Evap.sensor is short-circuited
open-circuited fails, it will stop defrost state, and is just
controlled by defrost duration. When condenser sensor is
short-circuited or high temperature overruns ( 150 /302 ) , "3H"
will be displayed alternately; when condenser sensor is open
circuited or low temperature overruns ( 45 / 45 ) , "3L" will be
displayed. The buzzer will sound.6. Circuit Diagram:
45 45
45 45
8. Factory default revision: Press button to adjust set
temperature well. Press button for 6 seconds to enter parameter
setup mode to set the parameter and then press button again for 6
seconds, "COP " will be displayed, the stored and revised set
temperature and parameter are factory default.9. The factory
default resumption:press button and button simultaneously for 6
seconds, "888 " flashes, all parameters will be resumed as same as
factory defaults.After 6 seconds,it returns to the normal
operation.10. Lock parameters In normal operating,press button and
hold for 6 seconds to lock the parameters if "OFF" is displayed (No
modification is allowed),or to unlock if "ON" is displayed.
Parameter can be displayed only and can not be modified if locked,
but the adjustment of the set temp. is active.(the factory default
is "ON" )
11 44 88 99
5A5A
1010 1111 121211 22 33 44 55 88 99
30A30A
1010 1111 1212
10A / 250VAC10A / 250VAC
11 44 88 99 1010 1111 121211 22 33 44 55 88 99 1010 1111
1212
ACLINE ACLINE
~~
12VAC12VAC
77
Evap.Sensor Evap.Sensor
Condenser SensorCondenser Sensor
Cold-room Sensor Cold-room Sensor
Co
mp
.C
om
p.
Eva
p. F
an
Eva
p. F
an
De
fro
st
De
fro
st
Notes:When F0=0, pin#5 controls heater;When F0=1, pin#5 controls
valve;
-
11 44 88 99
5A5A
1010 1111 121211 22 33 44 55 88 99
30A30A
1010 1111 1212
10A / 250VAC10A / 250VAC
11 44 88 99 1010 1111 121211 22 33 44 55 88 99 1010 1111
121212VAC12VAC
MODEL:SF-108MODEL:SF-108www.sfyb.comwww.sfyb.com
~~
77
20112011
-
MODEL:SF-108MODEL:SF-108www.sfyb.comwww.sfyb.com
20122012
11 44 88 99
5A5A
1010 1111 121211 22 33 44 55 88 99
30A30A
1010 1111 1212
10A / 250VAC10A / 250VAC
11 44 88 99 1010 1111 121211 22 33 44 55 88 99 1010 1111
1212
ACLINE ACLINE
~~
12VAC12VAC
77
Evap.Sensor Evap.Sensor
Condenser SensorCondenser Sensor
Cold-room Sensor Cold-room Sensor
Co
mp
.C
om
p.
Eva
p. F
an
Eva
p. F
an
De
fro
st
De
fro
st
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