Parallel Connection Of Chassis Power Units (Vector) Function Module - Siemens SINAMICS S120 Function Manual

4.7 Parallel Connection of Chassis Power Units (Vector)
function module
4.7.1 Features
SINAMICS supports the parallel connection of power units on the motor and infeed
side to extend the power spectrum of SINAMICS.
The main characteristics of parallel connection are:
S Parallel connection of two power units to a motor
-- With parallel connection of two power units on one motor with separate
winding systems (p7003 = 1)
Note:
Motors with separate winding systems are recommended.
-- Parallel connection of several power units to one motor (p7003 = 0)
Caution
!
The minimum line lengths must be observed. If the minimum line length cannot be
observed, a motor reactor must be used.
S Parallel connection of up to four power units on the infeed side (closed/open
loop)
S A CU320 can implement a maximum of one parallel connection on the mains
connection and one parallel connection on the infeed side.
S Simple commissioning, because no special parameterization is necessary.
S For the parallel connection, Line Modules and Motor Modules must always be
connected parallel.
S The power units connected in parallel must be connected to the same Control
Unit.
S Edge modulation is possible
S p7000ff can be used for diagnostic purposes for individual power units
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition

Parallel Connection of Chassis Power Units (Vector) function module

Extended functions
4-181