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Ph
N
C
N C
NO
C
N C
NO
C
N C
NO
PH N 4 5 6 7 8 9 10
Fault 1°Threshold Alarm Solenoid valves
Diode
1N 5406
12 V
+
+
3 2 1
Probe 1
3 2 1
Probe 2
R1 R2
1 2 3 4 5 6
Power supply
230/12V
Ph
N
230 V
AC
230 V
AC
Electrical Connections
Connections to Positive Safety disabled and an external power supply for
valve control and siren 12 V D
C
If a 12Vdc solenoid valve, which does not work well, is connected to the BX280.
Direct connection of 12VDC solenoid valves or sirens to the BX280 is not permitted.
An external power unit must always be used. The BX280 M gives a max current of 50mA
.
Summary of Contents for BX280
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