ABB IRC5 Operating Manual page 168

5 Troubleshooting by event log
5.5 3 xxxx
Continued
Probable causes
The cooling fans may be faulty or the air flow may be obstructed.
The ambient temperature may be too high. The system may be
running with a too high torque for extended periods of time.
Recommended actions
Verify that the fans are running and that the air flow is not
obstructed. Verify that the ambient temperature does not exceed
the cabinet's temperature rating. If possible, rewrite the user
program to reduce the amount of hard acceleration and hard
deceleration. Reduce the static torque due to gravity or external
forces.
34256, Rectifier temperature warning
Description
In drive module arg, the rectifier unit at drive unit position arg
is approaching a too high temperature level.
Consequences
It is possible to continue but the margin to maximum allowed
temperature is too low to sustain long term operation.
Probable causes
The cooling fans may be faulty or the air flow may be obstructed.
The ambient temperature may be too high. The system may be
running with a too high torque for extended periods of time.
Recommended actions
Verify that the fans are running and that the air flow is not
obstructed. Verify that the ambient temperature does not exceed
the cabinet's temperature rating. If possible, rewrite the user
program to reduce the amount of hard acceleration and hard
deceleration. Reduce the static torque due to gravity or external
forces.
34257, Open circuit in bleeder resistor circuit
Description
In drive module arg, the bleeder resistor connected to the
rectifier unit at drive unit position arg has too high resistance
(open circuit).
Consequences
No operation will be possible until the fault is corrected. The
system goes to Motors Off state.
WARNING HIGH VOLTAGE: THE DC LINK WILL NOT BE
DISCHARGED WHEN THE SYSTEM IS POWERED OFF.
Probable causes
This may be caused by a faulty bleeder resistor cable or a faulty
bleeder resistor.
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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.
34258, Short circuit in bleeder resistor circuit
Description
In drive module arg, the bleeder resistor connected to the
rectifier unit at drive unit position arg is indicating a short circuit.
Consequences
No operation will be possible until the fault is corrected. The
system goes to Motors Off state.
WARNING HIGH VOLTAGE: THE DC LINK WILL NOT BE
DISCHARGED WHEN THE SYSTEM IS POWERED OFF.
Probable causes
This may be caused by a faulty bleeder resistor cable or a faulty
bleeder resistor.
Recommended actions
WARNING HIGH VOLTAGE CAN BE PRESENT. Make sure the
bleeder resistor cable is correctly 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. Check for bleeder short circuit against
ground.
34261, Rectifier startup error
Description
In drive module arg, the inrush control relay in the rectifier unit
at drive unit position arg indicates an error.
Consequences
No operation will be possible until the fault is corrected. The
system goes to Motors Off state.
Probable causes
This may be caused by a faulty rectifier inrush control relay.
Recommended actions
Restart the controller and try again. If the problem remains then
replace the unit.
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Operating manual - Troubleshooting IRC5
3HAC020738-001 Revision: AA