Code oPE05: Run Command/Frequency Reference Source Selection Error
Issue Description & Safety Warning
The Yaskawa A1000 AC Drive has triggered a critical Run Command/Frequency Reference Source 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 Frequency reference is assigned to an option card (b1-01 = 3) but an input option card is not connected to the drive. Reconnect the input option card to the drive. The Run command is assigned to an option card (b1-02 = 3) but an input option card is not connected to the drive. Frequency reference is assigned to the pulse train input (b1-01 = 4), but terminal RP is not set for frequency reference input (H6-01 > 0) Set H6-01 to “0”. Although the digital card input is set for BCD special for a 5 digit input (F3-01 = 6), the data length is set for 8 bit or 12 bit (F3-03 = 0, 1). Set the input data for 16 bit (F3-03 = 2). The following values have been set while an AI-A3 option card is installed: - The source of frequency reference setting is assigned to an option card (b1-01 = 3). - The action for the analog card is set for separate terminal input (F2-01 = 0). Make sure parameters are set properly.
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 oPE05 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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