P2HZ X4P
Operating Manual P2HZ X4P
20076-EN-08
11
Wiring
Please note:
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Information given in the "
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Outputs 13-14, 23-24, 33-34 are safety contacts; output 41-42 is an auxiliary contact
(e.g. for display).
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Auxiliary contact 41-42 should
not
be used for safety circuits!
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To prevent contact welding, a fuse should be connected before the output contacts (see
).
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Calculation of the max. cable length l
max
in the input circuit:
R
lmax
R
l
/ km
I
max
=
R
lmax
= max. overall cable resistance (see
R
l
/ km = cable resistance/km
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Use copper wire that can withstand 60/75 °C.
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The supply voltage must be switched off with the operating energy of the machine.
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The connection cables between the P2HZ X4P and the pushbuttons should not be laid
directly next to power cables, otherwise inductive and capacitive interference coupling
can result.
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On account of the low currents you should use gold-plated pushbutton contacts.
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Only contactors with positive-guided contacts should be used for safety functions.
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Sufficient fuse protection must be provided on all output contacts with capacitive and in-
ductive loads.
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Do not switch low currents using contacts that have been used previously with high cur-
rents.
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On 24 VDC devices:
The power supply must comply with the regulations for extra low voltages with protect-
ive electrical separation (SELV, PELV) in accordance with VDE 0100, Part 410.
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Ensure the wiring and EMC requirements of EN 60204-1 are met.
