Yaskawa GA800 E07 Fault — What It Means
The E07 fault on a Yaskawa GA800 drive is an analog input selection or configuration error. This is not a power stage or motor problem. The drive has detected an invalid or conflicting assignment in the multifunction analog input parameters. The fault sits in the control and parameter configuration layer, typically after someone changed settings, swapped an option module, or restored parameters without checking for consistency across the analog input function blocks.
Common Causes
- Conflicting analog input parameter assignments Parameters H3-02, H3-06, H3-10, or H7-30 have been set to an incompatible combination, so the drive cannot resolve which analog source to use.
- Removed or failed option card The drive is configured to expect an option module or external analog signal path that is no longer installed or has failed.
- Parameter restore or load without consistency check A parameter set was copied or loaded from another drive or backup without verifying the analog input selections match the actual hardware present.
- Recent service or replacement work Someone reconfigured the drive during maintenance or troubleshooting and left one or more analog function selections pointing to an unavailable source.
Step-by-Step Fix
- Document the current state by recording the exact alarm code displayed, the drive model and spec code, and any recent parameter changes or hardware modifications before you touch anything.
- Review the analog input assignment parameters H3-02, H3-06, H3-10, and H7-30 in the drive menu and write down their current values.
- Compare the parameter selections to your intended control method and verify that each analog function path points to a single valid source with no overlapping or contradictory assignments.
- Inspect any option card or module that provides analog input functions and confirm it is seated correctly, not damaged, and matches what the parameters expect.
- Correct the parameter mismatch by setting the analog input selections to a valid combination that matches your installed hardware, then save the changes according to the drive procedure.
- Power-cycle the drive after clearing the fault and watch for the E07 to clear on startup.
- If the fault returns, revert to a known-good parameter set or factory defaults for the analog input group and confirm whether an option board or external signal is actually required for your application.
Parts Often Needed
| Part | Notes |
|---|---|
| Yaskawa GA800 option card or analog input module | Amazon | Only if troubleshooting shows a missing or failed module is causing the configuration error. |
| GA800 control board | Amazon | Only if the configuration is verified correct and the fault persists due to internal control circuit failure, consult Yaskawa for your exact model. |
When to Call a Pro
Call a qualified drive technician or integrator if you have verified the analog input parameters are set correctly for your hardware and the E07 fault still appears after a power cycle. Also call for help if you are not familiar with the GA800 parameter structure or if the drive is part of a coordinated multi-axis or process control system where an incorrect change can affect production. If your drive uses custom option cards or network modules and you are unsure which parameters correspond to your installed accessories, get support before guessing.