Code Er-01: Motor Data Error
Issue Description & Safety Warning
The Yaskawa V1000 AC Drive has triggered a critical Motor Data 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: Auto-tuning fault/alarm Manual section: Yaskawa V1000 Troubleshooting Motor data entered during Auto-Tuning was incorrect. - Enter the correct data. - Restart Auto-Tuning and enter the correct information. Motor output and motor-rated current settings (T1-02 and T1-04) do not match. - Check the drive and motor capacities. - Correct the settings of parameters T1-02 and T1-04. Motor output and no-load current settings (T1-04 and E2-03) do not match. Data required when Auto-Tuning for OLV Control or Stationary Auto-Tuning. - Check the motor-rated current and no-load current. - Correct the settings of parameters T1-04 and E2-03. Base frequency and base motor rotations (T1-05 and T1-07) do not match. Set T1-05 and T1-07 to the correct values.
Source: Yaskawa AC Drive V1000 Compact Vector Control Drive Technical Manual (SIEP C710606 19D)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Yaskawa V1000 AC Drive Alarms
Yaskawa controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code Er-01 on the V1000 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: 153 Yaskawa V1000 AC Drive codes.
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