Technical / Programming Manual
FT128 Rev 2.2
48
The gas control board SUB928 provides all the gaseous extinguishing control functions. It
provides the termination and supervision of all the field equipment.
5.5.4 CIE interface board (SUB943)
The CIE interface board (SUB943) is mounted at a suitable location inside FT128 cabinet.
It provides the required terminations to interface the gas control board SUB928 to FT128.
This includes zone alarm, Zone fault, zone isolate and gas release conditions.
Figure 22 Assembled Control & Interface Boards
5.5.4.1 Inputs from FT128 to CIE interface board (SUB943)
The following inputs are provided in the gas interface board:
1. 24VDC supply (22-30V), 200mA to 3A based on system power calculation
2. Zone 1 & Zone 2 alarm input from FT128, normally open clean alarm contact for
each zone or zone address required to activate the gas system.
3. Fault input
, zone 1 fault, zone 2 fault or power supply fault in the CIE will activate
the system inoperative sign. Fault input from FT128 should be normally closed
clean contact.
4. Zone Isolate input, if any of the two zone inputs or zone addresses used to release
the gas is disabled (open contact), the system inoperative sign will activate.
5.5.4.2 Outputs from CIE interface board (SUB943) to FT128
The following outputs from SUB943 are provided to indicate the gaseous extinguishing
system status in FT128 display via programmable inputs:
1. Gas isolate, relay output to indicate in FT128 if the gas has been isolated.
2. Gas fault relay output to indicate in FT128 if a fault exists in the gaseous
extinguishing system.
3. Gas release relay output to indicate in FT128 if the gas has been released.
Separate power supply must be used for the gas system,
Individual zone fault output can be configured only in software => V2.0.x software.
To Next Page
Loading...