Code oPE20: PG-F3 Setting Error
Issue Description & Safety Warning
The Yaskawa A1000 AC Drive has triggered a critical PG-F3 Setting 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 With the entered encoder resolution (F1-01), maximum output frequency (E1-04), and motor pole number (E5-04,) the calculation encoder signal frequency exceeds 50 kHz (with PG-F3 option). - Set F1-01 to the correct encoder resolution. - Reduce the maximum output frequency of the drive in parameter E1-04 so the encoder signal frequency at maximum speed is lower than 50 kHz. A short circuit between +V, -V, and AC terminals. Correct wiring Control circuit terminal overload. Check the resistance and wiring for the frequency setting potentiometer, etc. Check that the current for terminals +V and -V is 20 mA or less. The short circuit bar between terminals +1 and +2 in the main circuit has been removed. Attach the short circuit bar. Braking unit terminals P and N are connected in reverse. - Check the Braking unit wiring including cables connected to the Braking unit and relay terminals. - Replace the drive. Control power circuit failure Charge indicator is lit: - Replace the digital operator - Replace the drive control board. Charge indicator is not lit: - Check the input power supply voltage - Replace the drive. Malfunction occurred in the control power circuit. Turn OFF the power, wait for 5 minutes, then turn ON the power again. Digital operator contact failure Turn OFF the power, remove the digital operator, then replace the digital operator.
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 oPE20 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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