ABB IRC5 Operating Manual page 175

Probable causes
The incoming mains voltage to the rectifier unit is out of
specification.
Recommended actions
Check for other hardware event log messages regarding mains
voltage problem. Check incoming mains voltage. Change the
mains tolerance min so that the mains voltage is inside the
specified interval. Check that the correct voltage is selected
with jumpers on the transformer (optional). Check all internal
3-phase components (main switch, mains filter, fuse, contactors)
and cabling in the drive module.
34404, DC link voltage is critically high
Description
In drive module arg, the drive unit at unit position arg has a DC
link voltage that is critically high.
Consequences
No operation will be possible until the fault is corrected. The
system goes to Motors Off state with zero torque.
WARNING HIGH VOLTAGE: THE DC LINK MAY BE
DISCHARGED VERY SLOWLY (APPROXIMATELY 1 HOUR)
WHEN THE SYSTEM IS POWERED OFF.
Probable causes
The bleeder resistor is not connected or faulty. The user
program may contain too much deceleration of the manipulator's
axes. This fault is more likely if the system contains additional
axes.
Recommended actions
WARNING HIGH VOLTAGE CAN BE PRESENT. Make sure the
bleeder resistor cable is properly connected to the rectifier unit.
Disconnect the bleeder and check the cable and measure the
bleeder resistance. The expected resistance should be
approximately arg ohms. Rewrite the user program to reduce
the amount of hard decelerations.
34405, DC link voltage too high warning
Description
In drive module arg, the drive unit at unit position arg has a DC
link voltage that is close to maximum limit.
Consequences
Operation will be possible but the system is close to a stopping
error.
WARNING HIGH VOLTAGE: THE DC LINK MAY BE
DISCHARGED VERY SLOWLY (APPROXIMATELY 1 HOUR)
WHEN THE SYSTEM IS POWERED OFF.
Operating manual - Troubleshooting IRC5
3HAC020738-001 Revision: AA
Probable causes
The bleeder resistor is not connected or faulty. The user
program may contain too much deceleration of the manipulator's
axes. This fault is more likely if the system contains additional
axes.
Recommended actions
WARNING HIGH VOLTAGE CAN BE PRESENT. Make sure the
bleeder resistor cable is properly connected to the rectifier unit.
Disconnect the bleeder and check the cable and measure the
bleeder resistance. The expected resistance should be
approximately arg ohms. Rewrite the user program to reduce
the amount of hard decelerations.
34406, Drive unit power supply error
Description
In drive module arg, the drive unit with unit position arg has
detected problem with the logic power.
Consequences
No operation will be possible until the fault is corrected. The
system goes to Motors Off state with zero torque.
Probable causes
The 24V logic supply to the drive is temporary or constantly
lost.
Recommended actions
Check the event log for power supply unit error messages.
Check the cabling between the power supply unit and the drive
unit. Check the 24V output from the power supply unit.
34407, Drive unit internal error
Description
In drive module arg, the drive unit at unit position arg has
indicated an internal error.
Consequences
The system goes to system failure state with zero torque.
Probable causes
An internal error has occurred in the drive unit firmware.
Recommended actions
Restart the controller by using the main power switch.
34408, Drive unit hardware data error
Description
In drive module arg, the drive unit at unit position arg has
corrupt information stored on the unit.
© Copyright 2005-2018 ABB. All rights reserved.
5 Troubleshooting by event log
Continues on next page
5.5 3 xxxx
Continued
175