Installation manual

Publication 1394-IN002B-EN-P — February 2004
4-6 Troubleshooting Status Indicators
DriveHardFault
(Contactor Fault)
Three-phase power is either
detected when it shouldn’t
be or not detected when it
should be.
The contactor is welded or failed to open.
• Correct wiring.
• Replace the contactor.
The input wiring to your contactor is incorrect. Correct wiring.
MotFeedbackFault
(Fdbk Watch Dog)
A feedback hardware or
software fault detected.
The feedback processor has faulted.
• Cycle all input power.
• If fault persists, replace system module.
GroundShortFault
(Ground Short)
Excessive ground current in
the system module was
detected.
Incorrect wiring.
• Verify motor and ground wiring.
• Replace cables.
Motor malfunction.
Check the resistance of each motor winding
phase to case ground with an ohm meter.
Readings should be in mega ohms.
Axis Module IGBT malfunction. Replace the axis module.
Short to ground.
• Replace the system or axis module.
• Check grounding and incoming power
wiring.
DriveHardFault
(IDMA Load)
Motor feedback hardware
initialization fault detected.
Control board hardware failure.
• Cycle all input power.
• If fault persists, replace system module.
DriveHardFault
(Memory Init)
Memory hardware
initialization fault detected.
Incorrect motor feedback wiring. • Load default parameters, save to non-
volatile memory, and recycle power.
• Reset the drive.
• Replace the system module.
Improper feedback cable clamp attachment.
Control board hardware failure.
• Cycle all input power.
• If fault persists, replace system module.
DriveHardFault
(NV Mem Init)
Non-volatile memory is
corrupt.
Control board software error.
• Load default parameters, save to non-
volatile memory, and recycle power.
• Reset the drive.
• Replace the system module.
DriveHardFault
(Objects Init)
Non-volatile memory is
corrupt.
Control board hardware failure.
• Load default parameters, save to non-
volatile memory, and recycle power.
• Reset the drive.
• Replace the system module.
PowerPhaseLoss
Fault
(Phase Loss Flt)
The three-phase input line
is monitored and a fault will
be issued whenever a
phase loss is detected.
One or more input line fuses have opened. Check fuses and replace, as necessary.
Input line contactor malfunction.
• Correct wiring.
• Replace contactor.
Incorrect wiring. Check main ac input power at system module.
DriveHardFault
(SCANport Comm)
SCANport/DPI
Communication Failed.
The SCANport/DPI device or cable is faulty. Check SCANport/DPI connections.
SERCOSFault
(SERCOS Ring Flt)
SERCOS ring not active
after being active and
operational.
SERCOS ring is physically broken.
• Check fiber optic cable connections.
• Replace fiber optic cable.
ControlLogix program is downloaded during
operation (this causes SERCOS ring to cycle).
Wait for SERCOS ring to cycle and fault to
reset.
DriveHardFault
(SERCOS Init)
SERCOS hardware
initialization fault detected.
Control board hardware failure.
• Cycle all input power.
• If fault persists, replace system module.
DriveHardFault
(Serial Ring Init)
Intermodule serial
communication failed.
Terminator is not installed.
• Verify that the slider and terminator
connections are secure.
System module failure. Replace the system module.
Fault Message
RSLogix (HIM):
Description: Potential Cause is: Possible Resolution is: