REXROTH DIAX04, Troubleshooting Manual

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Description of Diagnostic Letters F... and E... DIAX04 ELS-06VRS
DOK-DIAX04-ELS-06VRS**-WA01-EN-P
F870 +24Volt DC error
The drive controller requires a 24V control voltage. The drive’s torque is
released immediately when the maximum permissible tolerance of
+-20 % is exceeded. If an optional electrically released motor holding
brake is present, then it is activated.
Cause:
1. Defective cable for the control voltages.
2. 24V power supply overload .
3. Defective power supply unit .
4. Short-circuit in the emergency stop circuit.
Remedy:
Ref. 1. Check and, if necessary, replace the cable and connections of the
control voltages.
Ref. 2. Check the 24V power at the power supply unit.
Ref. 3. Check the power supply unit.
Ref. 4. Check the emergency stop circuit for a short-circuit.
Note: This error can only be cleared in parameter mode (phase 2).
As a result of this error, the encoder emulation is switched off.
F871 +10Volt DC error
The power supply voltage for the current sensors has been disrupted.
Cause:
A defect in the drive controller.
Remedy:
Exchange the drive controller.
F878 Velocity loop error
The velocity loop monitor will appear when the following conditions occur
simultaneously:
•
The current command value is at the peak current limit.
•
Command accel and actual velocity have different qualifying signs
•
Actual velocity > 20 rpm or 20 mm/min
•
Command and actual acceleration have different qualifying (+/-)signs.
Cause:
1. Motor cable is connected incorrectly.
2. Defective controller section of the drive
3. Defective feedback
4. Velocity loop paramatrized incorrectly
5. Incorrect commutation offset
Remedy:
For 1. Check the motor cable connection.
For 2. Exchange the drive controller.
For 3. Exchange the motor.