ABB IRC5 Operating Manual page 149

Recommended actions
To resume operation, first reset the delayed stop button. Then
switch the system back to state Motors ON by pressing the
Motors ON button on the Control Module.
20506, Test Stop open
Description
The Test Mode Safeguarded Stop circuit has been broken.
Consequences
The system goes to status SYS HALT.
Probable causes
One or more of the switch connected in series with the Test
Mode Safeguarded Stop circuit have been opened, which may
be causes by a large number of faults. This is only possible
while in the Manual operational mode.
Recommended actions
Locate the switch, reset it and restart the controller. Check
cables and connections.
20507, Hardware chain open
Description
Relays (KA16 and KA17) on Safety Interface Board (SIB) not
activated.
Consequences
Motor on command rejected.
Recommended actions
Press motor ON button to close the chain.
20521, Test Stop conflict
Description
Status conflict for the Test Stop chain.
Consequences
The system goes to status SYS HALT.
Recommended actions
Please check the two-channel safety guard that caused the
status conflict.
20525, ES panel conflict
Description
Status conflict for the Emergency Stop panel chain.
Consequences
The system goes to status emergency stop.
Operating manual - Troubleshooting IRC5
3HAC020738-001 Revision: AA
Recommended actions
Please check the two-channel safety guard that caused the
status conflict.
20526, ES pendant conflict
Description
Status conflict for the Emergency Stop pendant chain.
Consequences
The system goes to status emergency stop.
Recommended actions
Please check the two-channel safety guard that caused the
status conflict.
20527, ES ext.cat.0 conflict
Description
Status conflict for the Emergency Stop ext.cat.0 chain.
Consequences
The system goes to status emergency stop.
Recommended actions
Please check the two-channel safety guard that caused the
status conflict.
20528, HV Interlock input conflict
Description
Only one of the two input signals in the high voltage chains is
opened.
Consequences
Paint enable chain opens.
Recommended actions
Please check the two-channel safety guard that caused the
status conflict.
20529, Cabin Interlock input conflict
Description
Only one of the two input signals in cabin interlock chains is
opened.
Consequences
Paint enable chain opens.
Recommended actions
Check cables and connections.
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5 Troubleshooting by event log
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