
8 Trouble Shooting
Product Manual, Control Cabinet IRC5P
191
8.3 Fault Symptoms and Malfunctions
8.3.17 Robot Brakes do not Release
Description
When starting robot operation or jogging the robot, the internal robot brakes must
release in order to allow for movements.
Consequences
If the brakes do not release, no robot movement is possible, and a number of error
log messages may occur.
Possible Causes
The symptom may be caused by:
•
Brake drivers do not work properly.
•
The system does not go to status Motors ON correctly.
•
Faulty brake on the robot axis.
•
Supply voltage 24V_BRAKE missing.
Recommended Actions
Step Action
Comment
1
Make sure the brake drivers on manipulator
board are working properly.
For information, see relevant
manipulator board in ‘Unit Description,
IRC5P’.
2
Make sure the RUN Chain is closed.
Check run chain. For information, see
’Robot Safety System Connections’
3
Try to release brakes manually. If just one of
the brakes malfunctions, the brake at hand is
probably faulty and will have to be replaced. If
none of the brakes work, there is probably no
24V_BRAKE power available.
For information on how to release the
brakes manually, see ‘Product Manual,
Manipulator’, Repair / Releasing Axis
Brakes.
4
Check that brake power is available to
manipulator board by measuring voltage in
connector.
For information, see relevant
manipulator board in ‘Unit Description,
IRC5P’..
5
A number of other faults within the system may
cause the brakes to remain activated. In such
cases, event log messages will provide
additional information.
For information on event log messages,
see ‘Operating Manual, Trouble
Shooting’ / Event Log Messages.
Содержание IRC5P
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