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Electrical connections
WARNING
Before connecting to the mains power, ensure the voltage is correct.
Carefully follow the instructions and the connections according to Regulations in force, keeping
in mind that the signal cables should be laid separate from the power cables.
Power Supply
230 V
AC
N.O. impulse type electrovalve
12V DC supply
Optional
WARNING !
The Relay is free of voltage.
Connection Scheme of GS920 Detector
N C
C
NO
N
Ph
+
+
12 V
1 2 3 4 5 6 7 8
Without Intrinsic Safety With Intrinsic Safety
Normally closed electrovalve 230VAC
The Relay is free of voltage.
Range of relay contact 10A resistive
The electrovalve is a N.C. Automatic or manual
retrig
Note
To connect a N.O. Electrovalve swap the
connections between pin 8 and 6
The Relay is free of voltage.
Range of relay contact 10A resistive
The electrovalve is a N.C. Automatic or manual
retrig
Note
Is not allowed to connect a N.O. electrovalve
Power Supply
230 V
AC
Power Supply
230 V
AC
Ph
N
Ph
N
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
