REXROTH DIAX04, Troubleshooting Manual

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4-10
Description of Diagnostic Letters F... and E... DIAX04 ELS-06VRS
DOK-DIAX04-ELS-06VRS**-WA01-EN-P
If the control voltage is turned off while the battery is taken out, the
absolute
reference point will be lost. Then, the reference point must be
reestablished with the command " Set absolute measuring “.
Removing the Battery
•
Unscrew torx screws with size 10 screwdriver.
•
Pull out the resolver feedback (RSF) lid by hand.
•
Pull off the battery connector.
•
Loosen battery clamp and remove the battery.
•
Place the prepared battery in the housing and screw on the clamp.
Attention! Do not kink or clamp the battery cable.
•
Attach the connector of the battery.
•
Close the resolver feedback lid, screw in 4 torx screws and tighten to
1.8 Nm with the torque wrench.
F249 Master drive encoder failure: signal too small
The signals of the master encoder are monitored. If its signal amplitude
falls below a minimum threshold value, then this error message appears.
The drive performs the best possible deceleration, as selected in the
parameter P-0-0119.
Criteria for correct encoder signals:
1. The pointer addition of the sine and cosine signals
must give at least 1 V.
2. The maximum pointer sum of the sine and cosine signals may not
exceed 11.8 V.
Cause:
The analog signals of the measurement system at the master axis do not
have the correct amplitude.
Remedy:
1. Check the encoder cable.
2. Check the encoder.
F252 Master drive encoder failure: quadrant error
A hardware error was discovered in the high resolution position interface
for "DLF" sine signals of the external measurement system.
Cause:
1. Defective encoder cable
2. Insulation distrubance on the encoder cable
3. Defective DLF plug-in card
Remedy:
For 1. Exchange the encoder cable
For 2. Separate the encoder cable from the power cables.
For 3. Exchange the DLF plug-in card