Corrected from:
Inverter Drives 8400 HighLine and TopLine from firmware version 15.01.00.00
Response of the new version?
In the case of the ASM servo control, with the activated "Slip calculation from motor nameplate data" option, a slip value that is too high can be corrected by setting C2864/1 bit 7 to "1".
The code is automatically set to "1" with the motor parameter identification, using the Engineer version V2.20 and loading a motor from the motor table.
Which products are affected?
Inverter Drives 8400 StateLine, HighLine and TopLine with a firmware version lower than 15.01.00.00
What happens?
Slip value too high by the factor 1.35, the result being that the attainable maximum torque is too low and torque accuracy is impaired.
When does the problem occur?
When "Slip calculation from nameplate" is selected (C2879 bit 1 = 0) in the motor control SC: ASM servo control (C006 = 2) .
Diagnostics options?
Measurement of the maximum torque using an external measuring system.
Short-term measures/recommendations?
Reduce slip value by factor 1.35 via the rated motor speed C87
Evaluation:
For applications requiring a high maximum torque and torque accuracy, the FW should be upgraded.
