ABB Error 90213 — Safety chain / enabling chain fault
ErrorABB 90213 (“Safety chain / enabling chain fault”): Dual-channel error: "A brief change of state in one of the safety or enabling chains has been detected." The supervision saw a transient too short to be an actuation, on a single channel. Likely part: Chaîne de sécurité / Chaîne de validation (safety chain / enabling chain).
Updated 2026-10-22 · LogrobotLM reference
What it means
Dual-channel error: "A brief change of state in one of the safety or enabling chains has been detected." The supervision saw a transient too short to be an actuation, on a single channel.
What to check
- Look for a bouncing contact or a loose connection rather than a clearly open device: this is the signature of an incipient fault.
- Check tightness and oxidation on the loop concerned, as well as the FlexPendant cable if 90203 accompanies the message.
- Do not simply acknowledge: the transient will become a definite break.
- Note: To be dealt with as a priority despite its transient nature. In the field log, a single occurrence, simultaneous with a 90203 — identifies the enabling device as the worn component.
Part to check / replace
ABB 90213 points to the hardware below — start here before ordering.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.
Related codes
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →