Efficient Networks Siemens Sinamics S120 - Manual (Page 288)

Function modules
7.11 Parallel connection of chassis power units (vector)
Drive Functions
288
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
7.11 Parallel connection of chassis power units (vector)
7.11.1 Features
SINAMICS supports the parallel connection of power units on the motor and infeed side to
extend the power spectrum of the SINAMICS.
The main characteristics of the parallel connection are:
● Parallel connection of up to four power units on one motor
– With parallel connection of several power units to one motor with separate winding
systems (p7003 = 1)
Note:
Motors with separate winding systems are recommended.
– – Connecting several power units in parallel to a motor with a single winding system
(p7003 = 0)
CAUTION
Additional information and instructions in the Equipment Manual must be carefully
taken into consideration.
● Parallel connection of up to four power units on the infeed side (closed/open loop)
● A CU320 can implement a maximum of one parallel connection on the mains connection
and one parallel connection on the infeed side.
● Simple commissioning, because no special parameterization is necessary.
● The power units connected in parallel must be connected to the same Control Unit.
● Individual power units can be diagnosed (troubleshooting) using p7000 ff
7.11.2 Integration
Overview of key parameters (see SINAMICS S List Manual)
● p0120 Power unit data sets (PDS) number
● p0121 Power unit component number
● p0602 Power unit temperature sensor with parallel connection
● r7000 Parallel circuit configuration, number of active power units
● r7001 Parallel circuit configuration, enable power units
● r7002 Parallel circuit configuration, status power units
● p7003 Parallel circuit configuration, winding system
● p7010 Parallel circuit configuration, current asymmetry alarm threshold
● p7011 Parallel circuit configuration, DC link voltage asymmetry alarm threshold