Yaskawa GA800 E16 Fault Code — What It Means
The E16 code on a Yaskawa GA800 drive is most commonly displayed as oPE16, which stands for Energy Saving Constants Error. This is an operator or programming-related fault, not a power section trip. The drive is reporting that one or more energy-saving parameters have been set outside the valid range that the GA800 will accept.
This type of error usually appears after parameter changes, cloning settings from another drive, or restoring from a backup file. The drive will not run until the out-of-range parameters are corrected and the fault is cleared. Unlike hardware faults, oPE16 does not indicate a failed component.
Common Causes
- Energy-saving parameter out of range One or more parameters in the energy-saving group have been set to a value the drive does not accept for your motor or application.
- Parameter cloning from incompatible drive Settings copied from another GA800 with a different capacity or firmware version may contain values that are invalid for your unit.
- Manual parameter entry error A typo or incorrect value was entered during commissioning or re-programming of the energy-saving functions.
- Parameter file restore or reset Restoring a backup file or performing a parameter reset can sometimes load default or saved values that are no longer valid for the current configuration.
- Firmware or model mismatch Parameters valid on one GA800 model or firmware revision may fall outside acceptable ranges after a firmware update or hardware change.
Step-by-Step Fix
- Confirm the exact code displayed on the keypad or operator panel, since the GA800 shows oPE16 for Energy Saving Constants Error and the displayed code determines the correct troubleshooting path.
- Access the energy-saving parameter group using the keypad menu, typically under the Advanced or Energy Saving section, and scroll through each parameter to identify any values highlighted as out of range or flagged by the drive.
- Check each flagged parameter against the valid range listed in the GA800 programming manual or the range shown on the keypad display, and note the current value and the acceptable minimum and maximum.
- Restore out-of-range parameters to valid values, either by entering a value within the acceptable range or by recalling factory defaults for that parameter group if you do not have a known-good reference.
- Clear the oPE16 fault using the keypad reset function or by cycling power to the drive, then check that the code does not reappear on the display.
- Test the drive under normal operating conditions to confirm stable motor control and verify that no new faults or alarms appear during run-up and load.
- If the code returns immediately with correct parameter settings, save your current parameter set to a file or keypad backup, then contact Yaskawa technical support with your drive model number, serial number, and the specific parameters that triggered the fault.
Parts Often Needed
| Part | Notes |
|---|---|
| GA800 Keypad / Operator Panel | Amazon | Only if the existing keypad is damaged and preventing parameter access or fault reset. |
| Parameter Backup Cable (USB or RS-485) | Amazon | Useful for saving and restoring known-good parameter sets during troubleshooting. |
When to Call a Pro
Call a qualified drives technician or Yaskawa support if the oPE16 code persists after you have verified and corrected all energy-saving parameters to values within the acceptable range. Also reach out if you do not have access to the GA800 programming manual or a known-good parameter file for your specific motor and application. If the fault returns after clearing and the drive will not run, or if you are uncomfortable navigating the parameter menus, professional support can compare your settings to the factory configuration and identify firmware or hardware issues that may require a control board replacement or factory service.