Multi-Tier Drive Line-Up; Arrangement Rules - Siemens SINAMICS S120 Manual

Cabinet design and EMC Booksize
12.4 Arrangement of components and equipment
12.4.4

Multi-tier drive line-up

12.4.4.1

Arrangement rules

The following points must be observed for the arrangement of a multi-tier drive line-up:
● The individual wires must be shielded, and the shield must be attached at both ends.
● The DC link is continued outside the components using the DC link adapter (for
information on mounting, see Chapter Accessories (Page 591)) and single conductor,
finely-stranded, shielded cables.
The cables must be laid according to IEC 61800-5-2 so that a ground fault or short-circuit
is completely ruled out.
● The distance between the tiers of modules primarily depends on the wiring, the cable
cross-section and the bending radius of the power cables to be connected.
● The inlet temperature of the air sucked in for cooling the module must not exceed 40° C
(with derating, it must not exceed 55° C). This must be ensured by means of suitable air
guidance, the distance between the module rows, or by air baffle plates.
Note
Operating faults due to incorrectly laid cables
Particularly with regard to satisfying the EMC requirements, signal cables should not be laid
parallel to power cables.
Note
Arrangement of the components for infeed of the DC link voltage from the right
If the infeed is on the right-hand side of the drive line-up (e.g. in a multi-tier configuration),
the rules described in Chapter Single-tier drive line-up (Page 674) apply in the inverse
sequence.
This means:
• Arrangement of the Motor Modules depending on their power, starting with the highest
power
• DC link components, such as Braking Modules, at the end of the tier
Note
Wiring rules for DRIVE-CLiQ
See SINAMICS S120 Commissioning Manual, Chapter "Rules for wiring with DRIVE-CLiQ".
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Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8