Cabling - Siemens SINAMICS G120P Hardware Installation Manual

● All connections should be made so that they are permanent. Screwed connections on
● Contactor coils, relays, solenoid valves, and motor holding brakes must have interference
4.2.4

Cabling

Cables inside the cabinet
● All power cables of the drive (line supply cables, cables to braking resistors, as well as
● Line supply cables running between the supply system and the line filter must be routed
● Signal and data cables, as well as filtered line supply cables, may only cross non-filtered
● All cable lengths must be minimized (excessive cable lengths must be avoided).
● All cables must be routed as closely as possible to grounded housing components, such
● Signal and data cables, as well as their associated equipotential bonding cables, must
● When unshielded single-wire cables are used within a zone, the feed and return lines
● Spare wires for signal and data cables must be grounded at both ends to create an
● Signal and data cables should enter the cabinet only at one point (e.g. from below).
Power Module PM230, IP20 / Push through
Hardware Installation Manual, 03/2012, A5E03448282B AA
painted or anodized metal components must be made either by means of special contact
washers, which penetrate the isolating surface and establish a metallically conductive
contact, or by removing the isolating surface on the contact points.
suppressors to reduce high-frequency radiation when the contacts are opened (RC
elements or varistors for AC currentoperated coils, and freewheeling diodes for DC
current-operated coils). The interference suppressors must be connected directly on each
coil.
motor cables) must be routed separately from signal and data cables. The minimum
distance should be approximately 25 cm / 9.84 in. Alternatively decoupling in the cabinet
can be implemented by means of separation plates connected to the mounting plate
(back plane) with excellent electrical conductivity.
separately from non-filtered power cables (cables to braking resistors as well as motor
cables).
power cables at right angles of 90° to minimize coupled-in interference.
as mounting plates or the cabinet frame. This reduces interference radiation as well as
coupled-in interference.
always be routed in parallel and with as short a distance as possible.
must be either routed in parallel with the minimum possible distance between them, or
twisted with one another.
additional shielding effect.
Connecting
4.2 EMC compliant connection
29