Description of the behaviour:
After a safe parameter set download, error messages from the safe position and speed evaluation "SSM - Safe Speed Monitor" may be reported repeatedly.
Error message: "0xFFAF - SSM: Speed comparison error", "0xFFAC - SSM: Encoder error", "0xFFAD - SSM: Resolver error".
These error messages cannot be permanently reset by an error acknowledgement (AIE).
Under what conditions does the behaviour occur?
The behavior can occur after a parameter set transmission if a safe encoder system is parameterized in object 0x2878:001. If the connected encoder system is moved at the moment of parameter set transfer, the error messages listed may be triggered after parameter set transfer.
Affected products:
i750 Extended Safety (ES)
Short-term measures:
The pending error message can be reset by executing the device command "0x2022:041 - Restart Extended Safety" or by power switching the device.
Evaluation/Recommendations:
It is recommended to restart the drive controller i750 or the Extended Safety module by reset/mains switching after completion of the safe parameterization phase in order to avoid availability problems of the system.
Automatic Translation
