Cabinet Design and EMC for Components, Blocksize Format
9.5 Information about electromagnetic compatibility (EMC) and cable routing
external magnetic fields (e.g. transformers, line reactors). In both cases, a distance of
≥ 300 mm is usually sufficient.
Signal and DC power supply cables
Operating non-shielded signal and DC power supply cables (e.g. 24 V externally supplied):
● DC power supply cables: Max. permissible length: 10 m
● Non-shielded signal cables: Max. permissible length: 30 m (without additional wiring)
For greater lengths, suitable wiring must be connected by the user to provide overvoltage
protection. For example:
Table 9-5
DC power supply
Weidmüller
Type no.: PU DS 24V 16A
Weidmüller GmbH & Co. KG
An der Talle 89
D-33102 Paderborn
Tel. +49 (0)5252/960-0
Fax +49 (0)5252/960-116
http://www.weidmueller.com
CAUTION
The connected signal and power cables must not cover the ventilation slots.
CAUTION
Non-shielded signal cables must not be routed parallel to power cables.
304
Recommendations for overvoltage protection
24 V signal cables
Weidmüller
Type no.: MCZ OVP TAZ
Manual, (GH6), 07/2007 Edition, 6SL3097-2AL00-0BP2
AC Drive