Rexroth IndraDrive
F8078 Speed loop error
Cause
Motor phases (U, V, W) interchanged so that
commutation of motor is incorrect
Incorrect encoder arrangement
Speed loop setting incorrect
Commutation offset incorrect
Motor encoder defective
DOK-INDRV*-GEN-**VRS**-WA01-EN-P
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
Supported by Firmware Variant:
The speed loop monitor is activated if the following conditions occur
simultaneously:
• Parameter S-0-0080, Torque/force command value is at the
torque/force limit.
• S-0-0080, Torque/force command value and actual velocity have
different signs.
• The actual velocity is higher than 20 rpm or 20 mm/min.
• Actual acceleration and control deviation have different signs.
Remedy
Check motor cable connection and correct phase
assignment, if necessary
Correct encoder arrangement (inverting rotational
direction of encoder can possibly resolve problem)
Check speed loop setting according to Application
Manual
Replace motor (in the case of MHD, MKD, MKE motors);
in the case of kit motors, make commutation settings
Replace motor encoder (or motor)
F8078 - Attributes
Display:
F8078
Mess. no.:
F8078 (hex)
Error Messages
FWA-INDRV*-MPH02VRS-MS
FWA-INDRV*-MPB02VRS-MS
FWA-INDRV*-MPD02VRS-MS
7-17