Siemens SINAMICS GL150 - Voltage Actual Value Sensing; Figure 3-6 Example: Components of the Motor Voltage Sensing

The information that can be derived from the correlation between the command and the
generated signals includes:
1. Commutation errors
2. Bridge short-circuit
3. Inverter shoot-through
4. Misfiring
3.3.3.3 Voltage actual value sensing
The voltage actual values are measured using AVT combination modules, whose measuring
resistors are connected in series. This ensures a high degree of measuring accuracy.
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① AVT combination modules
② Transformer
③ Measuring resistors
④ Surge suppressor (only > 3 kV)
⑤ 80 kHz power supply
Figure 3-6 Example: Components of the motor voltage sensing
Description
3.3 Power unit
SINAMICS GL150 6SL38503UM114PA0Z
Operating Instructions 04/2017 37