Siemens SINAMICS S120 Equipment Manual page 520

Cabinet Design and EMC Booksize
9.5 Information about electromagnetic compatibility (EMC) and cable routing
Signal and DC power supply cables
Operating unshielded signal and direct current supply cables (e.g. 24 V infeed with external
supply):
● Direct current supply cables: Max. permissible length: 10 m
● Unshielded 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 9-11
DC supply
Weidmüller
Type No.: PU DS 24V 16A
Weidmüller GmbH & Co. KG
An der Talle 89
33102 Paderborn
Tel. +49 (0) 5252/960-0
Fax +49 (0) 5252/960-116
http://www.weidmueller.com
NOTICE
The connected signal and power cables must be routed to the components in such a way
that they do not cover the ventilation slots.
CAUTION
Unshielded signal cables must not be routed parallel to power cables.
Table 9-12
Type
24 V DC power cables
24 V signal cables
DC link, including extensions
Total length of power cables in the drive line-up
comprising the following: Motor power cables, DC
link cable(s) and line feeder cable from the line
filter output
Total length: Motor cables, line feeder cable from
the Basic Line Filter to the Active Line Module
Total cable length with Voltage Clamping Module
(limitations/constraints, refer to the Chapter,
Voltage Clamping Module)
520
Recommendations for overvoltage protection
Maximum cable lengths
2
2
24 V signal cables
Weidmüller
Type No.: MCZ OVP TAZ
Maximum length [m]
10
30
10
350 (shielded)
560 (unshielded)
< 150 (shielded)
630 (shielded)
850 (unshielded)
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6
Booksize power units