Lenze MCS - Setting the Switching Frequency to the Rated Motor Data

Technical data
General d ata and operating conditions
Setting the switching frequency to the rated motor data
4
20
Lenze • BA 33.0006 • 5.1
4.1.1 Setting the switching frequency to the rated motor data
The rated data are valid for operation on an inverter with a switching frequency of at
least 8 kHz. If operated at a switching frequency of f
ch
=4 kHz, the following
consequences must be observed.
Motor type Consequences
MQA 20, 22, 26
MCA 20, 22, 26
At f
ch
= 4 kHz, the motor continuously reaches only approx. 95 % of
its rated torque.
Increased noise emission
MCM, MCS
MCA 10, 13, 14, 17, 19, 21
MDKS
All published rated data remain valid if f
ch
=4kHz.