Weidmuller Transclinic 8i+ Bedienungsanleitung Seite 59

CAUTION
Damages to the RS–485 transceiver IC of this equipment due to the
following wiring errors will not be covered under warranty:
• C onnecting the C pin of this equipment to protective earth anywhere
except in one point (at the master end). This connection may be already
done internally inside the RS–485 master.
• C onnecting the C pin of this equipment to the cable shield inside a
combiner box.
• Using non-twisted pair or non-shielded cables
• Not connecting the C pins of all the Transclinics together
WARNING
The RS–485 cables shall have the right length so that they do not apply
a mechanical strain to this equipment. Failure to observe this requirement
creates an electrical shock hazard and may also damage this equipment.
The RS–485 port of this equipment requires the following Weidmüller external surge
protective device set (base and cartridge):
8924270000 VSPC BASE 2CL FG
8924670000 VSPC RS485 2CH
CAUTION
The RS–485 surge protective device must have galvanic isolation
(i.e. "floating ground") between the C pin and protective earth. Failure
to observe this requirement is likely to permanently destroy the RS–485
transceiver IC of this equipment and the damage will not be covered by
Weidmüller's warranty.
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