8
Connection to a PLC / Instrument with TWO separate power supplies
or
Power Supply
12 - 24 VDC
12 - 24 VDC
Power Supply
12 - 24 VDC
12 - 24 VDC
PLC / Instrument
4 - 20mA Loop Input
4 - 20mA Loop Input
Power Supply
12 - 24 VDC
12 - 24 VDC
Power Supply
12 - 24 VDC
12 - 24 VDC
PLC / Instrument
4 - 20mA Loop Input
4 - 20mA Loop Input
A
+ VDC
- VDC
+ LOOP
- LOOP
1
2
3
4
SOLID-STATE RELAY WIRING DIAGRAM
(FOR SSR1 AND SSR2)
Connection to a PLC with NPN input Connection to a PLC with PNP input
Internal PLC
connection
N.O.
COM
9
8
PLC
Imax = 50 mA
Power sup.
Power sup.
O.C. IN
O.C. IN
N.O.
COM
9
8
PLC
Power sup.
Power sup.
O.C. IN
O.C. IN
Internal PLC
connection
Connection to a PLC / Instrument
digital input with separate Power
Supply
Connection to a PLC / Instrument
digital input for Voltage Free Contacts
(REED)
PLC
DIGITAL INPUT N
DIGITAL INPUT 2
DIGITAL INPUT 1
REF PLC
N.O.
Imax = 50 mA
Imax
COM
8
9
Connection to an User
N.O.
C
8
9 COM
AC or DC
Power
User
Imax = 50mA
N.O.
8
9 COM
AC or DC
Power
User
Power Supply
12 - 24 VDC
12 - 24 VDC
Power Supply
12 - 24 VDC
12 - 24 VDC
PLC / Instrument
4 - 20mA Loop Input
4 - 20mA Loop Input
Power Supply
12 - 24 VDC
12 - 24 VDC
Power Supply
12 - 24 VDC
12 - 24 VDC
PLC / Instrument
4 - 20mA Loop Input
4 - 20mA Loop Input
+ VDC
- VDC
A
+ LOOP
- LOOP
1
2
3
4
+ VDC
- VDC
+ LOOP
- LOOP
1
2
3
4
10 Kohm
N.O.
COM
C
8
9
Power Supply
12 - 24 VDC
12 - 24 VDC
PLC / Instrument
Digital INPUT
Digital INPUT
Imax = 50mA
N.O.
8
9 COM
AC or DC
Power
User
Imax = 50mA
N.O.
C
8
9 COM
AC or DC
Power
User
Imax = 50mA