SRVO-067: OHAL2 alarm (pulse coder overheat)
The thermostat inside the encoder tripped - the motor end is running abnormally hot.
What it means
The thermostat inside the encoder tripped - the motor end is running abnormally hot. Either the application is overworking the motor or the encoder's thermal sensing has failed.
Common causes
Ranked by what technicians most often find, most likely first.
- Duty cycle or load beyond rating heating the motor.
- Failed encoder/thermostat if the alarm persists on a cool motor.
How to fix it
- Relax load and duty into the allowable range.
- Let the motor cool fully, then retest: if the alarm returns on a demonstrably cool motor, replace the motor (and re-master after). Power-cycle required to clear.
Quick facts
- Category
- Servo
- Affected series
- R-30iB; R-30iB Mate; R-30iB Plus; R-30iB Mate Plus
- Alarm family
- SRVO
Related codes
- SRVO-066CSAL alarm (pulse coder checksum)
- SRVO-068DTERR alarm (pulse coder no response)
- SRVO-069CRCERR alarm (pulse coder data corrupt)
- SRVO-070STBERR alarm (pulse coder framing error)
- SRVO-063RCAL alarm (rotation counter abnormal)
- SRVO-071SPHAL alarm (feedback speed excess)
- SRVO-062BZAL alarm (pulse coder battery zero)
- SRVO-072PMAL alarm (pulse coder fault)