Carel GDSRSHFC00 - Failsafe Mode

36
ENG
Gas Leakage Detector +0300047IE rel 1.1 - 26.04.2023
Further information
5.4.1 Failsafe mode
The relays are set by default to failsafe mode. In this mode, the relays are active when there are no alarms, they are automatically
deactivated in the event of an alarm or in the event of a power failure (device o).
In this case, the wiring is as follows:
Gas detected (alarm active) No power supplyPowered on - no alarms
3B
2B
1B
3A
2A
1A
–
+
24 Vdc
POWER WARNING ALARM
–
3B
2B
1B
3A
2A
1A
+
24 Vdc
POWER WARNING ALARM
3B
2B
1B
3A
2A
1A
–+
24 Vdc
POWER WARNING ALARM
Gas detected (alarm active) No power supply (alarm active)
3B
2B
1B
3A
2A
1A
–
+
24 Vdc
POWER WARNING ALARM
3B
2B
1B
3A
2A
1A
–
+
24 Vdc
POWER WARNING ALARM
3B
2B
1B
3A
2A
1A
–
+
24 Vdc
POWER WARNING ALARM
Powered on - no alarms
The relays switch over in the event of an alarm or power failure
This setting can be changed by setting the RelayFailSafe variable on the supervisor, so that the relays are activated in normal,
non-failsafe mode.
In this case, the wiring is as follows: