Siemens SINAMICS DCM Manual page 590

10.29.1 Examples of peer-to-peer connections
Series connection
Each drive receives its own individual setpoint from the previous drive (classic setpoint
cascade).
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.
3) Optional data feedback, which drive 1 can use to monitor the functionality of the entire peer chain
Figure 10-89 "Series connection" peer connection type
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
10.29 Serial interface with peer-to-peer protocol
; with longer cables, an equipotential bonding cable should be used to ensure
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Descriptions of functions
591