Siemens SINAMICS G130 Engineering Manual page 226

SINAMICS S120
Engineering Information
Drive group comprising up to 4 Motor Modules in chassis format with the same current controller clock cycle (250 µs)
In a drive group with Motor Modules, a maximum of 4 Motor Modules with vector control can be operated on one
CU 320 or a maximum of 6 Motor Modules with V/f control. In the case of Motor Modules in voltage range 380 V to
480 V, <250 kW, the pulse frequency of all the Motor Modules operating in one DRIVE-CLiQ line is automatically
reduced from 2 kHz to 1.25 kHz from the third Motor Module.
It is not permissible to connect a mixture of modules operating on different pulse frequencies (e.g. 2 kHz and
1.25 kHz) on the same port of the CU320. If the output frequency and thus also the pulse frequency need to be
increased to achieve the required motor speed, the relevant DRIVE-CLiQ connection must be planned accordingly.
Drive group comprising up to 4 Motor Modules in chassis format with the same current controller clock cycle (400 µs)
SINAMICS Engineering Manual – May 2008
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