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Connections of a solenoid valve Normally Closed with Positive Safety
Connections of a solenoid valve Normally Closed without Positive Safety
NC NA
Ph
N
PH N 4 5 6 7 8 9 10 11 12
C
N C
NO
C
N C
NO
C
N C
NO
C
N C
NO
Fault 1°threshold 2° threshold Alarm Solenoid valve
Manual alarm
Ph
N
PH N 4 5 6 7 8 9 10 11 12
C
N C
NO
C
N C
NO
C
N C
NO
C
N C
NO
Fault 1°threshold 2° threshold Alarm Solenoid valves
Manual alarm
Connection examples
Power supply 230/12V
Di o de
1N 5406
1 2 3 4 5 6 7 8
+
+
3 2 1
Probe 1
3 2 1
Probe 2
3 2 1
Probe 3
3 2 1
Probe 4
R1 R2 R3 R4
Solenoid valve GAS and Sirens 12 VDC
12 V
If a 12Vdc solenoid valve, which does not work well, is connected to the BX444-Mc.
Direct connection of 12VDC solenoid valves or sirens to the BX444-Mc is not permitted.
An external power unit must always be used. The BX444-Mc gives a max current of 100mA
.
Control unit power supply and connection of one solenoid valve with sirens to 12 VDC trough an alternative
source and recharge battery.
Power supply
110/240 V
AC
Power supply
110/240 V
AC
