Mannesmann ecodrive03, Troubleshooting Manual

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ECODRIVE03 SMT-02VRS Description of diagnostic letters F... and E... 3-29
DOK-ECODR3-SMT-02VRS**-WA01-EN-P
E252 Bleeder overload prewarning
Cause:
The braking resistance (bleeder) in the amplifier is charged with the
reflected energy from the motor by about 90%. The bleeder
overtemperature warning shows that an overload of the bleeder is
expected if the feedback energy increases on and on.
Remedy:
Reduce the acceleration value or velocity. Check the drive installation.
E253 Target position out of travel range
In operation modes with drive controlled interpolation, the drive checks
before the move whether the specified S-0-0258, Target position, is
within the possible travel range of the drive. This range is defined by the
parameters S-0-0049, Positive position limit value and S-0-0050,
Negative position limit value. The position limit check is activated in
the parameter S-0-0055, Position polarities with bit 4.
Cause:
The target position lies beyond the position limits, and the position limit
check is activated.. The motion profile results in a target position greater
than the maximum allowed position.
Results:
•
This warning message, E253, appears.
•
The drive stops.
•
The drive does not accept the target position or the process block.
•
In S-0-0012, Class 2 diagnostic warning bit 13 is set.
Remedy:
1. For the Drive controlled interpolation mode, input the S-0-0258,
Target position only within the position limits.
2. Don’t input moves which are greater than the maximum allowed
position minus the current position.
3. In positioning-sequence operating mode always set S-0-4006,
Command Targetposition smaller than the maximum allowed
position.
4. The same holds for Relative Positioning commands, where the sum
of the commanded pos the start position should be less than
the maximum allowed position.
5. Check the position limit values. Moreover, the positive position limit
value must be greater than the negative position limit value.
6. If you don’t need the position limit check, de-activate it, e.g. in
modulo mode.
See also the functional description: "Operating Mode: Drive Internal
Interpolation".