Page 20
Ph
N
230 V
AC
C
N C
NO
C
N C
NO
C
N C
NO
C
N C
NO
1 2 3 4 5 6 7 8 9
Solenoid valves Prealarm Fault Siren ext
NA NC
Ph
N
230 V
AC
C
N C
NO
C
N C
NO
C
N C
NO
C
N C
NO
1 2 3 4 5 6 7 8 9
Solenoid valve Prealarm Fault Siren extt
NC
Connections of a solenoid valve Normally Closed with Positive Safety
Connecting a Solenoid valve with sirens to 12 VDC, via a power switcing. The power supply
should be adequate to the consumption of the components
C
N C
NO
C
N C
NO
C
N C
NO
C
N C
NO
1 2 3 4 5 6 7 8 9
Solenoid valve Prealarm Fault Siren ext
NA NC
Switching power supply
230 V
AC
Ph
N
12 VDc
+
Electrical connections
Connections of a solenoid valve Normally Closed without Positive Safety
