Owner manual
PSEN 4.2a/b/p/M12
Operating Manual PSEN 4.2a/b/p/M12 
22188-EN-02
8
Wiring
Please note:
}  Information given in the "Technical details" must be followed.
}  Calculation of the max. cable length l
max
 in the input circuit:
 R
lmax
 = Max. overall cable resistance (see Technical details [  20]
 R
l
 / km = cable resistance/km
Pin assignment, connector and cable
Fig.: 8 pin M8/M12 connector
PIN
Pin 
designation Function Wire colour
1 S21 Input, channel 2 White
2 A1 +24 VUB Brown
3 12 Output, channel 1 Green
4 22 Output, channel 2 Yellow
5 Y32 Signal output Grey
6 S11 Input, channel 1 Pink
7 A2 0 V UB Blue
8 - Do not connect Red
The wire colour also applies for the cable available from Pilz as an accessory.
Connection to evaluation devices
Please note:
}  The power supply must meet the regulations for extra low voltages with safe separation 
(SELV, PELV).
}  The inputs and outputs of the safety switch must have a safe separation to voltages 
over 60 V AC.
CAUTION!
The safety outputs must use 2-channel processing.










