FT2GAS
Gaseous Extinguishing System
Rev No. 1.3
42
4.5
Appendix E – Commissioning Record
Table 23 Resistance Check
Modul
e
Feature
Probe +
Probe -
Expected Resistance
Range (Ohms)
Result
FT2
Module
Power input TB1 POWER IN + TB1 POWER IN -
8K - 54K
Battery
TB1
TB1 BATTERY-
30K – 100K
Power
outputs
TB2 24V OUT +
TB2 24V OUT -
Reducing gradually
(caused by capacitor
charging)
Zone 1 input
ZONE +
ZONE -
2.5K – 5K
ZONE -
ZONE +
2.5K – 5K
Zone 2 input
ZONE +
ZONE -
2.5K – 5K
ZONE -
ZONE +
2.5K – 5K
Alarm device
relay output
(labeled as
ACF on the
PCB)
TB4 ACF-
TB4 ACF+
10K – 54K
TB4 ACF+
TB4 ACF-
> 24
Earth
TB5 EARTH
TB1 POWER IN + 30K – 150K
TB5 EARTH
TB1 POWER IN -
30K – 150K
Alarm
conditional
relay
Follow the requirements of the equipment connected. Vision inspection
of the connections.
Fault
conditional
relay
Isolate
conditional
relay
Alarm Level
1 Relay
Alarm Level
2 Relay
Gas
Module
Alarm
warning
output
TB3 L1 +, L2-
TB3 L1 -, L2+
8K – 30K
TB3 L1 -, L2+
TB3 L1 +, L2-
8K – 30K
System
inoperative
warning
output
TB3 SYS INOP +
TB3 SYS INOP -
> 48
TB3 SYS INOP -
TB3 SYS INOP +
8K – 30K
Gas release
output
TB4 GAS DISCHG O/P+ TB4 GAS DISCHG O/P- > 48
TB4 GAS DISCHG O/P- TB4 GAS DISCHG O/P+ 8K – 30K
Mechanical
lock-off valve
input
TB2 LOCK OFF I/P +
TB2 LOCK OFF I/P -
8K – 30K
TB2 LOCK OFF I/P -
TB2 LOCK OFF I/P +
8K – 30K
Mechanical
gas release
input
TB2 R
TB2 RELEASE -
8K – 30K
TB2 RELEASE -
TB2 R
8K – 30K
Gas
discharged
sensor input
TB2 DISCHGED I/P +
TB2 DISCHGED I/P -
8K – 30K
TB2 DISCHGED I/P -
TB2 DISCHGED I/P +
8K – 30K
