What the Er.630 alarm means

The motor was commanded to move but did not turn — rotor blocked — so current climbed to the limit with no motion. This is one of the faults our repair team handles on INOVANCE IRCB500 / IRCB501 + SV660 servo systems — the cause is usually identifiable within the first on-site inspection.

Most common causes

  • Robot physically jammed against a fixture or workpiece
  • Reducer or bearing seized
  • Brake permanently engaged
  • Motor cable open phase — two-phase running
Field note: the first item on this list is what we find most often on real machines. Check it before you go deeper.

Step-by-step field fix

  1. Release the jam mechanically and inspect for damage
  2. Check brake voltage and release action
  3. Test motor cable continuity on all three phases
  4. Backdrive the axis with power off to check the reducer
  5. Re-teach the path to keep clearance from the obstruction
Safety first: never bypass safety circuits or force contactors closed. If the alarm involves E-stop chains, brakes or drive power, and you are not a trained robot technician, contact a professional — wrong moves here can cost you a robot or an injury.

Still stuck? Get an engineer on the phone — right now

Tell us the alarm code, the robot model and what was happening when the alarm came up. Our engineers run these diagnostics every day, and remote diagnosis by phone or video call is free.

Get a Free Remote Diagnosis See Repair Services

Hotline: +86-20-39029800 · WhatsApp: +86-188-1886-2860

Related Motion & Path alarms

Er.234 — Runaway / Loss of Control
Other brands: we also keep field-fix libraries for EFORT · JAKA · AUBO and more — see the complete alarm code hub.

Frequently asked questions

QWhat does the INOVANCE Er.630 alarm mean?

The motor was commanded to move but did not turn — rotor blocked — so current climbed to the limit with no motion. In field practice it belongs to the motion & path family of faults.

QCan I clear a INOVANCE Er.630 alarm myself?

Sometimes. Work through the step-by-step checks on this page — the first listed cause is what we find most often in the field. If the alarm returns after two attempts, or the fault involves power, brakes or safety circuits, stop and call a qualified robot service engineer.

QHow fast can a Henghuan engineer help?

On-site response in the Pearl River Delta within 30 minutes to 3 hours, across mainland China in 1-3 business days, and worldwide within 2-5 business days. Remote diagnosis by phone/WhatsApp/video is available immediately.

Written by the Henghuan Robotics repair team from field service experience. Alarm descriptions are our own summary for troubleshooting reference and may vary by controller and software version — when in doubt, check your INOVANCE documentation or contact us. Henghuan is an independent service provider, not affiliated with or endorsed by INOVANCE.