Mannesmann ecodrive03, Troubleshooting Manual

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3-20 Description of diagnostic letters F... and E... ECODRIVE03 SMT-02VRS
DOK-ECODR3-SMT-02VRS**-WA01-EN-P
Note: The drive will not accept command values which lead out of
the permissible travel range. Entering these command values
in the drive controller will result in this error.
See also the functional description: "Travel Range Limits".
F811 Commutation offset could not be determined
The Automatic Commutation Adjustment has tried to determine the
commutation offset. That has failed.
Cause:
The motor could not move freely enough.
Remedy:
Check whether the motor is blocked.
See also the functional description: "Determining commutation offset".
F812 Motion range exceeded during commutation
A range of +/- 1 pole pair distance is defined, within which the axis may
move during the Automatic Commutation adjustment. If this range is
exceeded, this error message appears.
Cause:
1. The drive enable has been set while the axis was still in motion.
2. The axis has been moved by a mechanical force.
3. Parameters P-0-0560 Commutation adjustment current and
P-0-0562 Commutation adjustment periodic time are set too high.
Possibly the mechanical properties of the axis, like friction or weight
load, have changed.
Remedy:
1. Wait until the axis motion stops and set the drive enable once again.
2. Inhibit the influence of the mechanical force.
3. Reduce the parameter values for P-0-0560 Commutation adjustment
current and P-0-0562 Commutation adjustment cycle time. You can
also set them to the default values P-0-0560 Commutation
adjustment current = 25 % and P-0-0562 Commutation adjustment
cycle time = 4 milliseconds. Afterwards, start the command D300
Commutation adjustment to evaluate once again the optimal
parameters.
See also the functional description: "Synchronous Motors"