Rockwell Automation 1394 SERCOS Interface Multi-Axis Motion Control System Installation Manual - Manual (Page 100)

Publication 1394-IN002B-EN-P — February 2004
4-8 Troubleshooting Status Indicators
Axis Module Faults
Use the table below for troubleshooting axis module faults.
Fault Message
RSLogix (HIM):
Description: Potential Cause is: Possible Resolution is:
No Fault Message
(condition indicated
by on-screen
message)
(Ax: ATune Flt)
Auto tune procedure failed
to complete successfully.
Motor or feedback device malfunction.
• Check motor power/feedback wiring.
• Refer to on-screen message for resolution.
No Fault Message
(condition indicated
by on-screen
message)
(Axis x Hookup
Fault)
Hookup procedure failed to
complete successfully.
Motor or feedback device malfunction.
• Check motor power/feedback wiring.
• Refer to on-screen message for resolution.
DriveHardFault
(Axis x Unknown)
Active when serial ring
detects unknown axis
module.
Unknown axis module.
• Check the slider connections.
• Replace the axis module.
AuxFeedbackFault
(Ax: Aux Fdbk AQB)
Auxiliary Encoder State
Error Auxiliary encoder has encountered an illegal
state transition.
•
Use shielded cables with twisted pair
wires.
•
Route the feedback away from potential
noise sources.
•
Check the system grounds.
•
Replace the motor/encoder.
AuxFeedbackFault
(Ax: Aux Fdbk Comm)
Drive unable to
communicate with
auxiliary Smart feedback
device.
The auxiliary encoder feedback signal is lost.
• Check auxiliary feedback wiring.
• Reset faults.
AuxFeedbackFault
(Ax: Aux Fdbk Loss)
The feedback wiring is
open, shorted, or missing.
Open or short circuit has occurred on feedback
wiring. Check the feedback cable connectors/wiring
to the system module and motor.
The feedback wiring or termination to system
module is incorrect. Check the feedback cable connectors/wiring
to the system module and motor.
Motor feedback failure. Replace the motor feedback.
AuxFeedback
NoiseFault
(Ax: Aux Fdbk Noise)
Excessive noise detected
on feedback signals.
Poor grounding.
• Check ground clamp connectors.
• Check system module grounding.
DriveUndervoltage
Fault
(Ax: Bus Loss)
The DC bus supply to the
axis module was lost.
The slider connections may not be secure. Check slider connections.
An axis module’s bus link fuse has blown. Replace the axis module.
DriveOvercurrent
Fault
(Ax: Desat)
Too much current in the
axis module.
Power module malfunction. Replace the axis module.
DriveEnableInput
Fault
(Drive Enable Flt)
Missing Drive Enable Input
Signal
•
An attempt was made to enable the axis
through software while the Drive Enable
hardware input was inactive.
•
The Drive Enable input transitioned from
active to inactive while the axis was enabled.
•
Disable the Drive Enable Input fault.
•
Verify that Drive Enable hardware input is
active whenever the drive is enabled
through software.