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Connection to a PLC / Instrument
digital input with separate Power
Supply
Power Supply
12 - 24 VDC
12 - 24 VDC
PLC / Instrument
Digital INPUT
Digital INPUT
User
AC or DC
Power
The alarm is off during normal
operation and goes ON according to
Relay setting.
If Imax > 50 mA use external Relay
RELAY WIRING DIAGRAM (FOR RELAY 1 & RELAY 2)
The alarm is OFF during normal
operation and goes ON according to
Relay settings
AC or DC
Power
3
N.O.
4
COM
Imax = 50mA
lmax = 50mA
Connection to an User
3
N.O.
User
3
N.O.
4
COM
4
COM
Imax = 50mA
Imax = 50mA
lmax = 50mA
RELAY 2
10
11
COM
12
Alarm
Connection to a PLC / Instrument
digital input for Voltage Free Contacts
(REED)
PLC
DIGITAL INPUT N
DIGITAL INPUT 2
DIGITAL INPUT 1
REF PLC
AC or DC
Power
N.O.
3
COM
4
The alarm is ON during normal
operation and goes OFF according to
Relay settings
NO
AC or DC
NC
Power
Imax
3
N.O.
4
COM
Imax = 50 mA
lmax = 50mA
AC or DC
Power
User
+V
Imax
External Relay
Imax
V= 12-24 VAC/VDC
lmax = 50mA
Imax = 50 mA
-V
Alarm
3
N.O.
3
N.O
4
COM
4
COM
User
Imax = 50mA
Imax = 50
lmax = 50mA
N.C.
COM
N.O.
RELAY 2
10
NO
11
COM
12
NC
9
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