REXROTH DIAX04, Troubleshooting Manual

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DIAX04 ELS-06VRS Description of Diagnostic Letters F... and E...
4-27
DOK-DIAX04-ELS-06VRS**-WA01-EN-P
For 4. Check the velocity controller to see whether it is within operational
parameters.
For 5. Exchange the motor.
see also the functional description: "Determining the Velocity Controller
Setting".
see also the functional description: "Determining commutation offset"
F879 Velocity limit S-0-0091 exceeded
In torque control, the actual velocity is monitored. This error is generated
if the programmed velocity in the
S-0-0091, Bipolar velocity limit value
parameter is exceeded by the 1.125-fold value or a minimum of 100 rpm
(rotary motor) or by 100 mm/min (linear motor).
Cause:
The torque command value was for too long a time greater than the load
torque. This causes the actual speed to increase up to the maximum
possible motor speed.
Remedy:
Assign the correct torque command value for the required task. Reduce
the
S-0-0092, Bipolar torque/force limit value parameter value.
See also the functional description "Limiting to bipolar velocity limit value".
F889 Regeneration overcurrent
Cause:
The feedback current of the drive is greater than 1.2 times the type
current (with HDD only).
Remedy:
Replace the drive.
F890 Processor fault power supply unit
Cause:
The RSK processor on the plug-in storage card is not working.
Remedy:
Exchange drive controller or the plug-in storage card.