ABB IRC5 Operating Manual page 171

damaged or badly connected. Verify that the motor cables has
no short circuits internally or to ground. Verify that no DC link
errors are present in the event log. Verify that the incoming
mains voltage is within the specification.
34306, Drive unit temperature error
Description
The drive unit for joint arg has reached a too high temperature
level. The joint is connected to drive module arg with the drive
unit at unit position arg and node arg.
Consequences
No operation will be possible until the fault is corrected. The
system goes to Motors Off state.
Probable causes
The cooling fans may be faulty or the air flow may be obstructed.
The cooling fins are covered by dust reducing the cooling effect.
The ambient temperature may be too high. The joint 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. Clean the cooling fins. 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.
34307, Drive unit temperature warning
Description
The drive unit for joint arg is approaching a too high temperature
level. The joint is connected to drive module arg with the drive
unit at unit position arg and node arg.
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 cooling fins are covered by dust reducing the cooling effect.
The ambient temperature may be too high. The joint 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. Clean the cooling fins. Verify that the ambient
temperature does not exceed the cabinet's temperature rating.
If possible, rewrite the user program to reduce the amount of
Operating manual - Troubleshooting IRC5
3HAC020738-001 Revision: AA
hard acceleration and hard deceleration. Reduce the static
torque due to gravity or external forces.
34308, Drive unit critical temperature error
Description
The drive unit for joint arg has reached a critical high
temperature level. The joint is connected to drive module arg
with the drive unit at unit position arg and node arg.
Consequences
No operation will be possible until the fault is corrected. The
system goes to Motors Off state with zero torque.
Probable causes
The cooling fans may be faulty or the air flow may be obstructed.
The cooling fins are covered by dust reducing the cooling effect.
The ambient temperature may be too high. The joint 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. Clean the cooling fins. 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.
34309, Drive transistor current too high
Description
The drive unit transistor current is too high for joint arg. The
joint is connected to drive module arg with the drive unit at unit
position arg and node arg.
Consequences
No operation will be possible until the fault is corrected. The
system goes to Motors Off state.
Probable causes
The motor configuration is incorrect. The axis load may be too
high or the motor may have stalled (maybe due to a collision).
Short circuit between motor phases or ground.
Recommended actions
Check that the motor configuration is correct. Check that the
robot has not collided. If possible, reduce the speed of the user
program. Check that the axis load is not too high for the drive
unit. Check the motor cable and motor by measuring their
resistance respectively. Disconnect before measuring.
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5 Troubleshooting by event log
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