ABB IRC5 Operating Manual page 449

Probable causes
The safety configuration is too demanding for the system.
Recommended actions
Create and load a less demanding configuration with fewer and
simpler zones.
90836, Safety Controller has entered safe state
Description
The safety controller has entered the safe state.
Consequences
The system goes to status SYS HALT.
Probable causes
The cause of this is described in previous event log entries.
Recommended actions
Check and handle previous event messages and restart the
robot controller.
90851, Safety Configuration Error
Description
The safety configuration file arg does not match the installed
system options. The safety configuration file contains arg
instances of arg when arg instances is allowed.
Consequences
The Safety Controller will not load the safety configuration and
enters safe state.
Probable causes
The safety configuration file contains elements that are not
supported by the installed system options.
Operating manual - Troubleshooting IRC5
3HAC020738-001 Revision: AA
Recommended actions
Remove the instance arg in the safety configuration and
download it to the controller, or install the required option, arg.
90852, Empty Safety Configuration
Description
The safety configuration is empty.
Consequences
No supervision of the robot will be performed.
Recommended actions
Use the configurator to add safety supervision.
90890, Start of Safety Controller failed
Description
The main computer could not start the safety controller. See
the event log for more details.
Consequences
No operation will be possible until the fault has been corrected
and the system has been restarted.
Probable causes
This may be caused by faulty hardware or incompatible safety
controller software version.
Recommended actions
Reinstall system. Make sure the safety controller board is
properly mounted. Restart the system and check if the error
remains.
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5 Troubleshooting by event log
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