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Code oPE08: Parameter Selection Error

Issue Description & Safety Warning

The Yaskawa A1000 AC Drive has triggered a critical Parameter Selection Error alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.

Official Troubleshooting Steps

Code type: Operator programming error Manual section: Yaskawa A1000 Troubleshooting Attempted to use a function that is not valid for the selected control mode. Check the motor control method and the functions available. In Open Loop Vector Control, n2-02 is greater than n2-03 Correct parameter settings so that n2-02 is less than n2-03. In Open Loop Vector Control, C4-02 is greater than C4-06 Correct parameter settings so that C4-02 is less than C4-06. In OLV/PM, parameters E5-02 to E5-07 are set to 0. - Set the correct motor code in accordance with the motor being used (E5-01). - When using a special-purpose motor, set E5-□□ in accordance with the test report provided. Both E5-09 and E5-24 are set to 0, or are not 0 in control modes for PM. Set E5-09 or E5-24 to the correct value, and set the other to “0”. In AOLV/PM High Frequency Injection is disabled (n8-57 = 0) and the minimum frequency (E1-09) is set lower than 1/20 of the base frequency setting. Correct the parameter settings. Or, set n8-57 to 1 to enable High Frequency Injection. Note: Use U1-18 to find which parameters are set outside the specified setting range. Other errors are given precedence over oPE08 when multiple errors occur at the same time.

Source: Yaskawa AC Drive A1000 High Performance Vector Control Drive Technical Manual (SIEP C710616 21H)

Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.

About Yaskawa A1000 AC Drive Alarms

Yaskawa controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code oPE08 on the A1000 AC Drive identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Yaskawa's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.

Complete Alarm List: 280 Yaskawa A1000 AC Drive codes.

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