Pilz PSSu E F BSW - Manual (Page 19)

Wiring
Operating Manual PSSu E F BSW(-T)
21372-EN-05
19
Wiring
General wiring guidelines
Please note:
} Please refer to the technical details regarding the requirements of the supply voltages.
} Safe electrical isolation must be ensured for the external power supplies that generate
the supply voltages. Failure to do so could result in electric shock.
} The external power supplies must comply with the current applicable standard
EN 60950-1, EN 61140, EN 50178 or EN 61558-1.
} The maximum current load for the C-rail is 10 A. Please refer to the derating diagram.
} Permitted infeed at the C-rail:
– PE
– 0 V
– Shield
– - 30 VDC ... +30 VDC
– - 48 VAC ... + 48 VAC
} Earth the 0 V supply on the periphery supply or monitor each supply group for earth
faults.
} The connection of the 0 V supply to the central earth bar or earth fault monitor must be
in accordance with the relevant national regulations (e.g. EN 60204-1, NFPA 79:17-7,
NEC: Article 250).
} Minimum range for cable cross sections on connection terminals in mm 2 :
– Power supply: 1.5 (AWG16) ... 2.5 (AWG12)
– Functional earth: 1.5 (AWG16) ... 2.5 (AWG12)
} Use copper wiring.
} To prevent contact welding, a fuse should be connected before the periphery supply in-
feed (see Technical details).
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