Siemens SINAMICS DCM Manual page 591

Descriptions of functions
10.29 Serial interface with peer-to-peer protocol
Parallel connection
Up to 31 drives receive the same setpoints from drive 1.
1) The shields for the interface cables must be connected directly on the devices (using a clamp, for example) to de-
vice or cabinet ground, with a low level of impedance.
2) Twisted cable, e.g. LIYCY 2×0.5 mm
that the difference in ground potentials between the link partners remains below 7 V.
Figure 10-90 "Parallel connection" peer connection type
592
; with longer cables, an equipotential bonding cable should be used to ensure
2
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
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SINAMICS DCM DC Converter