What the D1500 alarm means

The controller cannot read the axis encoder at all; with a D-level encoder error the controller must be power-cycled and the axis position is suspect. This is one of the faults our repair team handles on Kawasaki E / F / C series (AS language) systems — the cause is usually identifiable within the first on-site inspection.

Most common causes

  • Failed encoder
  • Severed or shorted encoder harness
  • Encoder interface board fault
  • Severe noise event
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. Power-cycle the controller
  2. Reseat and test the encoder harness for the axis
  3. Swap-test the encoder
  4. After repair, zero ALL affected axes at scribe marks before auto mode
  5. Run a check-mode playback of key programs to confirm positions
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.

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

Related Encoder & Position alarms

W1013 — Encoder Battery Voltage Low (Warning) E1029 — Encoder Revolution Count Abnormal (Axis XX) E1030 — Encoder Data Abnormal (Axis XX) E1033 — Encoder Line Error (Axis XX) E1511 — Encoder Battery Voltage Low [Servo] E1516 — Encoder Data Abnormal (Multiple Joints)
Other brands: we also keep field-fix libraries for Staubli · Epson · Nachi and more — see the complete alarm code hub.

Frequently asked questions

QWhat does the Kawasaki D1500 alarm mean?

The controller cannot read the axis encoder at all; with a D-level encoder error the controller must be power-cycled and the axis position is suspect. In field practice it belongs to the encoder & position family of faults.

QCan I clear a Kawasaki D1500 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 Kawasaki documentation or contact us. Henghuan is an independent service provider, not affiliated with or endorsed by Kawasaki.