Corrected from:i700 servo inverter, series devices (V02.x): from V02.10.12.11906
existing devices (V01.x): from V01.10.12.11905
Response of the new version:
Now the drive controller can be inhibited, when the brake has been opened via "Release holding brake: Open brake" (0x2820/11=1).
What happens?
The drive controller can no longer be inhibited.
This behaviour is due to the fact that the internal state machine can no longer change back from 'Operation Enabled' to 'SwitchedOn'.
When does this behaviour occur?
Under the following conditions, the controller can no longer be inhibited:
- The drive controller is in the 'Operation Enabled' state, the holding brake is controlled via the internal state machine (0x2820:1=0) and
- the 'Release holding brake: Open brake' function has been used to open the brake (0x2820/11=1).
Now, the controller can no longer quit the 'Operation Enabled' state and, can, accordingly, no longer be inhibited.
Which products are affected?
i700 servo inverter
Short-term measures:
Reset holding brake control to inhibit the controller.
Evaluation/recommendations:
The 'Release holding brake: Open brake' function is mainly designed for commissioning and servicing. Here, it is used in manual mode so that the operator can intervene, if necessary.
In particular for hoist applications, holding the 'active' load even requires that the drive controller remains enabled as long as the brake is released.
