SRVO-231: Chain 2 abnormal
Mirror of SRVO-230, opposite polarity: a chain-1 contact open while its chain-2 partner is closed.
What it means
Mirror of SRVO-230, opposite polarity: a chain-1 contact open while its chain-2 partner is closed. Same half-operation causes, same release ritual.
Common causes
Ranked by what technicians most often find, most likely first.
- Same as SRVO-230: half-operated safety device, failing contact, or single-chain wiring fault.
How to fix it
- Do not reset this alarm to keep running until the fault is found and repaired: one working channel of a dual-channel safety circuit is not a working safety function. Work the SRVO-230 remedy: check the history for the implicated device, operate it fully and deliberately, watch for SRVO-236 confirming the mismatch cleared, then run the chain-release procedure: (a) press and release an E-stop button on the pendant or operator panel, (b) press F4 'RES_1CH' on the Alarm ACTIVE screen, (c) press RESET. A fault that will not clear this way is qualified-technician diagnosis. Never bypass a safety chain to get running.
Quick facts
- Category
- Servo
- Affected series
- R-30iB; R-30iB Mate; R-30iB Plus; R-30iB Mate Plus
- Alarm family
- SRVO