Parallel Connection Of Motor Modules - Siemens SINAMICS S120 Equipment Manual

Maximum output frequencies achieved by increasing the pulse frequency
By multiplying the rated pulse frequency with a multiple integer, the following output
frequencies can be achieved taking into account the derating factors:
Table 5- 17
Table 5- 18
1)
5.6.3

Parallel connection of Motor Modules

The following rules must be observed when connecting Motor Modules in parallel:
● Up to 4 identical Motor Modules can be connected in parallel.
● A common Control Unit is required whenever the modules are connected in parallel.
● The motor supply cables must be the same length (symmetrical design).
● Power must be supplied to the Motor Modules from a common DC link.
● For motors with a single winding system, supply cables with a minimum length or motor
● A derating factor of 5 % must be taken into consideration, regardless of the number of
Note
It is only possible to connect identical power units in parallel if both power units have the
same hardware version. Mixed operation between a power unit with Control Interface
Module (order number 6SL33xx-xxxxx–xAA3) and a power unit with Control Interface Board
(order number 6SL33xx-xxxxx–xAA0) is not possible.
Chassis Liquid Cooled Power Units
Manual, (GH7), 01/2011, 6SL3097-4AM00-0BP1
Maximum output frequencies achieved by increasing the pulse frequency in VECTOR
mode
Pulse frequency [kHz]
1.25
2
2.5
4
5
Maximum output frequencies achieved by increasing the pulse frequency in SERVO
mode
Pulse frequency [kHz]
2
4
The maximum output frequency of 650 Hz is can only be achieved for a current controller clock
cycle of 125 µs (factory setting: 250 µs).
reactors must be used. The cable lengths are listed in the following tables.
modules connected in parallel.
5.6 Technical specifications
Maximum output frequency [Hz]
100
160
200
320
400
Maximum output frequency [Hz]
300
300 / 650
1)
Motor Modules
169