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RECOM INDUSTRIALE s.r.l. Cap. Soc.€.110.000,00 int. vers. Via Pietro Chiesa, 25 r. – 16149 Genova – Italia C.C.I.A.A. 38999 GE Tel. (+39) 010.469.56.61 r.a. – Fax (+39) 010.642.42.05 RE.A. 365226 GE E-mail: [email protected] http: //www.recomindustriale.com P.IVA e C.F. 03618890101
- Response time (T90): <25 seconds at 20 ° C - Zero Shift (-20 ° C to + 40 ° C): <9 ppm equivalent
- Repeatability: 1% of the signal
- Linearity: Linear - Temperature: 0 ° C to 50 ° C
- Humidity: 0-95% RH - Pressure: 800-1150hPa
- Output: 4-20mA / IO / UART interface - Power supply: 12-24V DC
CO 0-2000 ppm code 1001780
3 CONNECTIONS - The cabinet described above has the following fluidic connections (gas) and electrical / signals
(fig3):
- - Side Gas: quick-fit connectors on both inlet and outlet
- Fitting Electric / signals: connectors on the electrical supply cables and on the signals + connector for
connection with optical-acoustic panel.
This approach allows to facilitate the maintenance operations and in case of need, to release rapidly
throughout the cabinet from its fluidic and electrical interfaces and replace the module with a new central
possibly available as spare.
RECOM INDUSTRIALE s.r.l. Cap. Soc.€.110.000,00 int. vers. Via Pietro Chiesa, 25 r. – 16149 Genova – Italia C.C.I.A.A. 38999 GE Tel. (+39) 010.469.56.61 r.a. – Fax (+39) 010.642.42.05 RE.A. 365226 GE E-mail: [email protected] http: //www.recomindustriale.com P.IVA e C.F. 03618890101
Pag. 8 di 12
Fig3
3.1 INTERFACES
In order to ensure the monitoring of alarms and fault by the SISS, the system in question must be interfaced
via hardwired with the automation system which in turn will transfer that information to the SISS by means
of software interface.
The central, through the 37-pin connector is connected to a terminal board (fig4) where the following
signals are shown:
- n° 3 of 4-20mA signals for the value of gas concentration in ppm Ranked # 3 CE NO contacts for
gas alarm. (1,2,3,4,5,6 terminals)
- n° 3 of CE NO contacts fault / alarm sensors (7,8,9,10,11,12 terminals)
- n° 1 of 1 EC general NO contacts general fault (terminals 13,14)
- n° 1 of low-flow pump alarm contact (terminals 15,16)
- n° 1 of NO contact for ACK / Acknowledge alarm (terminals 17,18)
- N°.1 voltage output 5Vdc for signaling during plant operation (terminals 19,20)
4 alarm logic - Gas Detection Alarm
- Fault detection pump
- Sensor fault detection
The following describes the logic for each case.
4.1 Detection alert GAS 1. Following the gas detection alarm for exceeding set thresholds in the central GasScreen 160:
a. Activation optical-acoustic panel installed above the storage room
RECOM INDUSTRIALE s.r.l. Cap. Soc.€.110.000,00 int. vers. Via Pietro Chiesa, 25 r. – 16149 Genova – Italia C.C.I.A.A. 38999 GE Tel. (+39) 010.469.56.61 r.a. – Fax (+39) 010.642.42.05 RE.A. 365226 GE E-mail: [email protected] http: //www.recomindustriale.com P.IVA e C.F. 03618890101
Pag. 9 di 12
b. red led ignition relative to the corresponding gas
c. Change the color bar graph display with the same red
d. yellow LED at the ACK / Silence button lights up during activation of the same button
Recognition / acknowledgment alarm with ACK / Silence button and maintenance of the optical
alarm state for the alarm and the red LED bar graph, until the return of the sub-alarm threshold
value. After silencing the yellow LED turns off.
2. At the back of the value detected below the alarm threshold:
a. Automatic red gas alarm LED goes off
b. Automatic restoration of the normal bar graph was on the color display
4.2 Fault detection pump
1. Following the fault detection pump (occurs due to lack or low flow through signal 4 ... 20 mA sent to the
central GasScreen 160 from the digital flow switch with color display PFM 7)
a. Alarm activation unit
b. Turning on yellow lamp of "pump fault"
c. Change color bar graph pump (l / min) with the same color of the logical thresholds of
gas
d. yellow LED at the ACK / Silence button lights up during activation of the same button
2. Recognition / acknowledgment alarm with ACK and maintenance of the optical alarm status of the yellow
lamp fault and bar charts to clear this fault. After silencing the yellow LED turns off.
3. Returning to the Default condition:
a. automatic shutdown of the alarm yellow lamp fault
b. Automatic restoration of the normal bar graph was on the color display
4.3 Fault detection sensor
1. Following the sensor fault detection:
a. Alarm activation unit
b. Turning on yellow lamp "fault sensor"
c. Color change to yellow bar graph sensor below the minimum threshold
d. yellow LED at the ACK / Tacitaz ion button lights during activation of the same button
2. Recognition / acknowledgment alarm with ACK and maintenance of the optical alarm status of the
yellow lamp fault and bar charts to clear this fault.
RECOM INDUSTRIALE s.r.l. Cap. Soc.€.110.000,00 int. vers. Via Pietro Chiesa, 25 r. – 16149 Genova – Italia C.C.I.A.A. 38999 GE Tel. (+39) 010.469.56.61 r.a. – Fax (+39) 010.642.42.05 RE.A. 365226 GE E-mail: [email protected] http: //www.recomindustriale.com P.IVA e C.F. 03618890101
Pag. 10 di 12
3. Returning to the Default condition:
a. automatic shutdown of the alarm yellow lamp fault
b. Automatic restoration of the normal bar graph was on the color display
5 User display
The display installed on the right section of the front panel of the central cabinet, consists of a touch monitor
7-inch color. The man-machine interface structure (fig5) consists of the following elements:
The main display Default page contains the following information:
- No.4 bargraph, 1 for each of the three gases with the gas concentration detected in the
display (ppm) and 1 for the display of the pump capacity (l / min)
- Navigation buttons
From the functional point of view, the touch on each of 4 bar graphs, generates the opening of the
corresponding detail page with the following information:
Value measured in ppm or l / min and in mA.
Display alarm thresholds / fault
From each of these pages of detail you can open a window of setting the alarm thresholds by means of
access for maintenance operator password
RECOM INDUSTRIALE s.r.l. Cap. Soc.€.110.000,00 int. vers. Via Pietro Chiesa, 25 r. – 16149 Genova – Italia C.C.I.A.A. 38999 GE Tel. (+39) 010.469.56.61 r.a. – Fax (+39) 010.642.42.05 RE.A. 365226 GE E-mail: [email protected] http: //www.recomindustriale.com P.IVA e C.F. 03618890101
Pag. 11 di 12
Fig5
6 INSTALLATION ON BOARD The central and the optical / acoustic signal will be fixed to the wall in the deposit matching ammunition to
be monitored.
• It must be connected to a 220Vac power privileged. • The local flow analysis will be done through two bulkhead passages for pipe diameter 6 mm which will
connect the outlets of the intake and exhaust analyzer • All external connections of the center will be made in Jbox connected to it through the connector (fig6)
RECOM INDUSTRIALE s.r.l. Cap. Soc.€.110.000,00 int. vers. Via Pietro Chiesa, 25 r. – 16149 Genova – Italia C.C.I.A.A. 38999 GE Tel. (+39) 010.469.56.61 r.a. – Fax (+39) 010.642.42.05 RE.A. 365226 GE E-mail: [email protected] http: //www.recomindustriale.com P.IVA e C.F. 03618890101