Pole position identification (PPI at standstill): Holding brake is released unexpectedly (corrected from V1.5.6)

Corrected from:
- i700 servo inverter V01.05.06.9665

Response of the new version:
As expected, the holding brake is now no longer accidentally released during pole position identification (PPI at standstill).
 

What happens?
When pole position identification (PPI at standstill) is executed, the holding brake is unexpectedly released.
 
When does the problem occur?
The problem occurs if pole position identification (PPI at standstill) is executed and the brake mode is unlike the Lenze setting set to 'Control via device state machine' (0x2820.1=[0]).
 
Which products are affected?
- i700 servo inverter ≤ V01.04.00.9125

Short-term measures/recommendations:
Control the holding brake via the functionality in the controller program and set the holding brake mode to 'Control via control word from ext. controller' (0x2820.1=[1]) for this.
 
Evaluation:
When the holding brake is controlled via the functionality in the controller program, the holding brake is not unexpectedly released.
For holding brake control, the 'L_SMC_BrakeControl' function block must be integrated in the PLC program of the higher-level controller .
 

URL for linking this AKB article: https://www.lenze.com/en-de/go/akb/201400146/1/
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