
Wiring
Operating Manual PSEN ml s 1.1/2.1/2.2
1004710-EN-05
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PIN
Function
Terminal designation
Cable colour (Pilz
cable)
10
Safety input channel 2
S21
Purple
11
Operation of solenoid of the
next safety switch in the
series connection (channel
1)
32
Grey-pink
12
Operation of solenoid of the
next safety switch in the
series connection (channel
2)
42
Red-blue
5.3
EMC requirements
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Ensure the wiring and EMC requirements of EN 60204-1 are met.
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UL requirement: The supply voltage to the safety switch must be protected with a quick-
acting fuse (see
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The inputs and outputs of the safety switch must have a protective separation to voltages
over 60 VDC.
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The power supply must meet the regulations for extra low voltages with protective elec-
trical separation (SELV, PELV).
INFORMATION
Only use safety relays with a 24 VDC supply voltage. Safety relays with a
wide-range power supply or in AC device versions have internal potential
isolation and are not suitable as evaluation devices.