Yaskawa GA800 E10 Fault Code — What It Means
The E10 fault code on a Yaskawa GA800 drive signals a communication error between the drive and its digital operator (keypad). This is not a motor overload or process fault. It means the drive has lost reliable contact with the keypad or the link between them has failed. The exact wording displayed may vary slightly by firmware version, but the root issue is always operator-link communication.
Yaskawa’s troubleshooting flow is straightforward: identify and remove the cause, then reset the fault. The drive will not run normally until the communication link is restored and the code is cleared.
Common Causes
- Loose or improperly seated keypad connection The operator cable or connector at the drive or keypad is not fully engaged or has become loose from vibration.
- Damaged operator cable The communication cable between the drive and keypad has bent pins, a broken conductor, or contamination in the connector.
- Defective digital operator (keypad) The keypad itself has failed or its internal communication interface is no longer functioning.
- Faulty control board operator interface If the keypad and cable test good, the drive’s control board or operator interface circuitry may be damaged.
- Option-based communication path issues If the drive is using an external communication option, wiring or network problems can also create operator communication errors.
Step-by-Step Fix
- Record the exact fault code and any text displayed on the operator before clearing it, and note the drive model and serial number.
- Power down the drive safely and lock out the power source before opening enclosures or handling the keypad connection.
- Inspect the keypad cable and connectors at both the drive and operator ends for visible damage, bent pins, loose locking tabs, or contamination, and clean or straighten as needed.
- Reseat both ends of the operator cable firmly, making sure the connector engages fully and any locking mechanism clicks into place.
- Swap in a known-good digital operator if available and power up to see if the fault clears, indicating a bad keypad.
- Swap in a known-good operator cable if the drive uses a separate cable and the fault persists with the new keypad.
- If the fault remains with known-good keypad and cable, suspect the drive control board and contact Yaskawa support or an authorized service center for board-level diagnosis and replacement, then reset the fault using the keypad RESET function or by cycling power per the manual.
Parts Often Needed
| Part | Notes |
|---|---|
| Yaskawa GA800 digital operator (keypad) | Amazon | Match the model and firmware version to your drive. |
| Operator communication cable (keypad cable) | Amazon | Only if your installation uses a separate cable between drive and keypad. |
| GA800 control board (operator interface board) | Amazon | Replace only after confirming keypad and cable are good. Consult Yaskawa support for the correct part number. |
When to Call a Pro
Call a qualified technician or Yaskawa authorized service provider if you do not have a spare keypad or cable to swap for diagnosis, if the fault persists after verifying good connections and swapping the operator, or if you are uncomfortable working inside the drive enclosure. Control board replacement requires proper handling of static-sensitive components and matching the correct board revision to your drive model and serial number. Always have your drive’s model, spec number, serial number, and fault code ready when opening a service case.