Pilz 570603, Operating Manual, Page: 10 / 30

PSEN sl­1.0n 1.1/2.1/2.2
Operating Manual PSEN sl­1.0n 1.1/2.1/2.2
22174­EN­03
10
Lateral and vertical offset
Loc
k
Safe
ty Gate
P
o
wer F
ault
Input
Vertical offset max. 5 mm Lateral offset max. 3 mm
Wiring
Please note:
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You must comply with the specifications stated in the technical details (see Technical
details:
System with normal actuator [ 22] , System with free­moving
actuator [ 25] , under electrical data, inputs and semiconductor outputs).
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The power supply must meet the regulations for extra low voltages with protective sep­
aration (SELV, PELV).
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The inputs and outputs of the safety switch must have a protective separation to
voltages over 60 VDC.
INFORMATION
Only use safety relays with a 24 VDC supply voltage. Safety relays with uni­
versal power supply or in AC device versions have internal potential isola­
tion and are not suitable as evaluation devices.
Guidelines for cable length
The max. cable length depends on the voltage drop at the sensor cables. The level of
voltage drop is determined by the:
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Cable resistance
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Current of the device and the current load of the safety outputs 12 and 22
If the level of the supply voltage at the device connector falls below the minimum permitted
value (see Technical details:
System with normal actuator [ 22] , System with free­mov­
ing actuator [ 25] , under electrical data), the electromagnet is no longer activated reli­
ably. The "Lock" LED registers an error when guard locking.
Possible remedies:
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Set the supply voltage constantly to the upper tolerance range (see Technical details:
System with normal actuator [ 22] , System with free­moving actuator [ 25] , un­
der electrical data)
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Select a higher cable cross section
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Reduce the load on the safety output, e.g. with an electrical evaluation device (PNOZ
e1.1p, 5 mA/channel)