Yaskawa GA800 E96 Fault — What It Means
E96 is not a standard documented fault code in Yaskawa GA800 manufacturer materials. Yaskawa distinguishes faults, alarms, and errors on the GA800, and troubleshooting begins by recording the exact code and any additional text shown on the operator display. The exact meaning of E96 depends on the specific GA800 model variant, firmware version, and the complete message displayed on the keypad.
Because the E96 definition is not confirmed in Yaskawa’s published GA800 fault lists, treat it as an uncertain code until you verify it against your exact drive manual or contact Yaskawa technical support with the model number, serial number, and full display message. For any GA800 error state, Yaskawa’s procedure is to remove the cause of the condition and then press RESET on the keypad while the code is displayed.
Before You Replace Anything
Technicians sometimes replace the control board or option cards without first checking basic wiring, power supply quality, and mechanical binding on the motor shaft. Always inspect all control and power connections, verify stable input voltage, and confirm the motor turns freely before ordering parts.
Common Causes
- Wiring or terminal issues (~30%) Loose control wiring, incorrect terminal connections, or damaged cables can trigger undefined error states on the GA800.
- Power quality problems (~25%) Supply loss, undervoltage, phase loss, or unstable input power can cause the drive to display non-standard error codes.
- Motor or load problems (~20%) A stalled motor, mechanical binding, or overload on the driven machine can produce unexpected error conditions.
- Drive or motor setup mismatch (~15%) Wrong model selection, incorrect motor nameplate data entry, or application settings that do not match the load can generate error states.
- Option card or communications interference (~10%) When fieldbus or other option boards are installed, option or communication problems are a known GA800 troubleshooting category and can produce uncommon codes.
Quick Diagnosis
Answer these to narrow it down fast.
Does the keypad show only E96, or is there additional text or a diagnostic message?
No: The code alone is not enough to diagnose. Proceed with general GA800 troubleshooting by checking wiring, power, and mechanical condition.
Does the motor shaft turn freely by hand with power removed?
No: The load is mechanically bound or the motor is seized. Remove the mechanical obstruction, then press RESET and test.
Is an option card or fieldbus module installed in the drive?
No: Focus on basic power, wiring, and application setup issues.
Step-by-Step Fix
- Record the exact display. Write down whether the keypad shows only E96 or includes additional text or diagnostic context, and note the GA800 model number and serial number.
- Check the drive and motor installation. Verify the nameplate model code, inspect all wiring for loose or burnt terminals, and confirm the drive is the correct unit for the application.
- Inspect the motor and driven load. With power removed and locked out, turn the motor shaft by hand to confirm it is free and the load is not mechanically bound or overloaded.
- Measure input power. Check that incoming line voltage is stable, all phases are present, and the supply meets the GA800 input specifications for your model.
- Inspect all control and power connections. Look for loose terminals, damaged conductors, burnt connectors, or incorrect terminal landing on both the power and control sides.
- Check option cards and external communications. If the system uses a fieldbus or other option board, remove or isolate the option to see whether the code clears.
- Remove the cause and reset. Once you have corrected the wiring, power, mechanical, or option issue, press RESET on the keypad while the code is displayed and monitor for return of the error.
- Contact Yaskawa support if the code returns. Provide the model number, spec code, serial number, full fault display, and failure history, because Yaskawa directs deeper repairs beyond field-replaceable parts to factory service.
Parts Often Needed
| Part | Notes |
|---|---|
| GA800 control board | Amazon | Only replace if Yaskawa support confirms board failure and you have verified wiring and power first. |
| GA800 cooling fan | Amazon | Field-replaceable maintenance part; consult the GA800 maintenance manual for your frame size. |
When to Call a Pro
Call a qualified industrial electrician or Yaskawa-authorized service center if you cannot identify the exact meaning of E96 in your drive manual, if the code returns after you have checked wiring and power, or if the drive requires internal component replacement beyond the fan or control board. Yaskawa’s maintenance documentation directs deeper repairs to factory service. Also call a professional if you are not trained in lockout/tagout procedures or high-voltage troubleshooting, because the GA800 operates at lethal voltages and requires safe isolation before any work inside the enclosure.
Rough cost: A pro service call runs about $200-500.