SRVO-370: SVON1 status abnormal
Chain alarm on the E-stop board's internal SVON signal - one of the two redundant internal servo-on channels disagrees with its partner.
What it means
Chain alarm on the E-stop board's internal SVON signal - one of the two redundant internal servo-on channels disagrees with its partner. The manual attaches its sternest warning here: do NOT reset this chain error until the failure is identified and repaired, because running on one healthy channel means the next single failure removes the safety function entirely.
Common causes
Ranked by what technicians most often find, most likely first.
- Failed emergency stop board - the internal signal's redundancy has lost a channel.
How to fix it
- Do not reset this alarm to keep running until the failure is identified and repaired: the manual is explicit that with one duplicate circuit faulty, safety is not guaranteed if the other fails. This indicates a failed emergency stop board, which is qualified-technician replacement work. After the repair, recovery uses the SRVO-230/231 chain-release procedure. This is not a fault to work around to keep a robot in production.
Quick facts
- Category
- Servo
- Affected series
- R-30iB; R-30iB Mate; R-30iB Plus; R-30iB Mate Plus
- Alarm family
- SRVO