Parallel Connection Of Motor Modules - Siemens SINAMICS S120 Equipment Manual

Motor Modules
6.6 Technical specifications
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 6- 18
Table 6- 19
Depending on the system configuration, higher frequencies are possible.
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6.6.3

Parallel connection of Motor Modules

The following rules must be observed when connecting Motor Modules in parallel:
● Up to four 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
reactors must be used. The cable lengths are listed in the following tables.
● A derating factor of 5% must be taken into consideration, regardless of the number of
Motor Modules connected in parallel.
Note
Mixed operation is not possible
It is only possible to connect identical power units in parallel if all power units have the same
hardware version. Mixed operation between a power unit with Control Interface Module
(Article No. 6SL33xx-xxxxx–xAA7 or 6SL33xx-xxxxx–xAA3) and a power unit with Control
Interface Board (Article No. 6SL33xx-xxxxx–xAA0) is not possible.
176
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
Maximum output frequency [Hz]
Maximum output frequency [Hz]
300 / 550
Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0
100
160
200
320
400
300
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