Siemens SINAMICS S120 Function Manual page 838

Basic information about the drive system
14.12 System rules, sampling times and DRIVE-CLiQ wiring
The following applies when connecting Motor Modules in parallel:
● Parallel connection is only permitted in the Chassis or Chassis-2 formats.
● When commissioning Motor Modules in the Chassis-2 format, a firmware version of ≥ V5.2
must be available.
● Parallel connection is only permitted in the VECTOR or U/f control modes.
● A maximum of 4 identical Motor Modules of the Chassis format or a maximum of 6 identical
Motor Modules of the Chassis-2 format are permitted in a parallel connection. All modules
connected in parallel must have the same output.
● Only one drive object may be created for a parallel connection.
● Only one parallel connection is permitted per Control Unit.
Line Modules
For the CU310-2 Control Unit the following applies:
● Operating Line Modules is not permitted.
For the CU320-2 Control Unit the following applies:
● Only one drive object of the Smart Line Module (SLM), Basic Line Module (BLM) and Active
Line Module (ALM) types is permissible in each case.
● Mixed operation of an Active Line Module with a Smart Line Module (SLM) or with a Basic
Line Module (BLM) is not permitted.
● Mixed operation of a drive object of the Smart Line Module (SLM) type with a drive object of
the Basic Line Module (BLM) type is permitted.
● An active Voltage Sensing Module (VSM) must be assigned to each active Active Line
Module (ALM) or Smart Line Module (SLM) of the Chassis format. A violation of this rule
causes fault F05061 to be issued.
● Two further Voltage Sensing Modules can be operated with the "network transformer"
function module for Active Line Modules (ALM).
The following rules apply to the parallel connection of Line Modules of the Chassis or Chassis-2
formats:
● Parallel connection is permissible for a maximum of 4 Infeed Modules of the Chassis format
or a maximum of 6 Infeed Modules of the Chassis-2 format.
● The operation of Infeed Modules with different power ratings is not permissible.
● When commissioning ALMs, Chassis-2 format connected in parallel, a firmware version of
≥ V5.2 must be available.
● An active Voltage Sensing Module (VSM) must be assigned to each Active Line Module
(ALM). A violation of this rule causes alarm F05061 to be issued.
● When using Smart Line Modules (SLM), an active Voltage Sensing Module (VSM) must be
assigned to at least one Smart Line Module (SLM) in the parallel connection. A violation of
this rule causes fault F05061 to be issued.
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Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions