ECODRIVE03 SMT-02VRS Description of diagnostic letters F... and E... 3-31
DOK-ECODR3-SMT-02VRS**-WA01-EN-P
E256 Torque limit = 0
Cause:
1. For protection against mechanical overload, the maximum torque
can be limited by the S-0-0092, Bipolar Torque Limit parameter.
If the actual value of this parameter is equal to 0, the motor does
not develop torque and does not follow the given command
values.
2. Torque reduction is set via an analog channel, and the applied
voltage amounts to 10 V.
Remedy:
For 1. Set the torque limit to a value greater than 0.
For 2. Establish an analog voltage smaller than 10 V.
See also the functional description:"Current Limit"
E257 Continuous current limit active
The drive controller sets the peak current available for 400 ms.
Thereafter, the continuous current limit becomes active and dynamically
limits the peak current to the continuous current.
Cause:
More continuous torque was required than was available.
Remedy:
1. Check the drive installation.
2. Check the installation of the motor. For systems which have been in
use for a long time, check to see whether the drive conditions have
changed in regards to
•
pollution
•
friction
•
moved masses
See also the functional description: "Current Limit".
E258 Selected process block is not programmed.
Cause:
A positioning block was selected for which there is no set target position
or positioning velocity, etc.
Remedy:
Select another positioning block or enter the required data.
See also the functional description: "Positioning Block Mode"