User guide
PSEN cs4.1a/b/p/M12
Operating Manual PSEN cs4.1a/b/p/M12 
22187-EN-02
17
Align the actuator and tighten the screws.
Use the seals to close the screws' mounting 
holes on the actuator
}  (4): Without UL approval
}  (1): For UL approval
Use the seals (3) to close the mounting 
holes on the sensing face of the safety 
switch.
Adjustment
}  The stated operating distances (see Technical details [  20]) only apply when the 
safety switch and actuator are installed facing each other in parallel. Operating distanc-
es may deviate if other arrangements are used.
}  Note the maximum permitted lateral and vertical offset (see Operating distances [
 7] 
and Lateral and vertical offset [
 7]).
Operation
Check the function of the safety switch before commissioning.
Status indicators:
}  "POWER/Fault" LED lights up green: The unit is ready for operation
}  "Safety Gate" LED lights up yellow: Actuator is within the response range
}  "Input" LED lights up yellow: There is a high signal at both inputs.
Error display through periodic flashing:
}  "Input" LED lights up yellow: the signal switches from high to low at one input, while a 
high signal remains on the other input (partial operation). 
Remedy: Open both channels of the input circuit.
}  "POWER/Fault" LED lights up red: Error message 
Flashing codes for fault diagnostics are output to the "Safety Gate" and "Input" LEDs 
(see Error display through flashing codes). 
Remedy: Rectify fault and interrupt power supply.
Please note the different switch-on delay after U
B
 is applied and after the recovery time of 
the sensor and evaluation device.










