Rockwell Automation 1394 SERCOS Interface Multi-Axis Motion Control System - Manual (Page 50)

Publication 1394-IN024B-EN-P — February 2004
2-14 Troubleshooting Your 1394 SERCOS Interface System
Understanding Logix/Drive
Fault Behavior This section provides the drive fault actions and indicates whether the
fault action is programmable.
The following drive fault action definitions apply:
System Module Faults
Drive Fault Action Definition
Shutdown
The drive disables and the contactor enable relay opens. Uncontrolled
stop, motor coasts to a stop.
Disable Drive The drive is disabled. Uncontrolled Stop, motor coasts to a stop.
Stop Motion
The drive switches internally to velocity mode and sets the command to 0.
Logix configuration for velocity loop Kp/Ki is followed. When zero speed is
reached or stopping time is exceeded, the drive is disabled.
Note: Stopping time and stopping torque are configurable parameters in
RSLogix 5000.
Status Only
Drive continues to operate. Status is provided by System Module Status
LED and SCANport/DPI (if used).
Fault Message
RSLogix (HIM):
Description:
Drive Fault
Action
RSLogix
Programmable
Fault Action?
DriveOvercurrent
Fault
(Bus Overcurrent)
System module exceeded current rating. SHUTDOWN No
DriveOvervoltage
Fault
(Bus Overvoltage)
The DC bus voltage is above limits. If it exceeds (830V dc), a fault is
sensed and the power supply is disabled.
SHUTDOWN No
DriveUndervoltage
Fault
(Bus Precharge)
The system module pre-charge cycle has failed. SHUTDOWN No
DriveUndervoltage
Fault
(Bus Undervoltage)
The DC power bus activates undervoltage limit when the bus drops
to 275V dc or less. It will clear at 300V dc.
SHUTDOWN No
DriveHardFault
(Can Init)
SCANport hardware initialization fault detected. SHUTDOWN No
DriveHardFault
(Contactor Fault)
Three-phase power is either detected when it shouldn’t be or not
detected when it should be.
SHUTDOWN No
MotFeedbackFault
(Fdbk Watch Dog)
A feedback hardware or software fault detected. DISABLE No
GroundShortFault
(Ground Short)
Excessive ground current in the system module was detected. SHUTDOWN No
DriveHardFault
(IDMA Load)
Motor feedback hardware initialization fault detected. SHUTDOWN No