Schneider Easy Altivar ATV610 / ATV310, Altivar ATV950, ATV31C & ATV Solar Drive
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Jul 11, 2024 5:30 am
The message "RTAL" Reference frequency low threshold reached indicates a fault condition on your Schneider ATV610 drive related to the speed reference it receives.
The RTAL Reference frequency low threshold reached warning on a Schneider ATV610 drive indicates that the reference frequency (the frequency command or setpoint) has fallen below a predefined low threshold limit set in the drive's parameters.
- Verify the frequency parameters set in the drive, including the reference frequency limits and scaling.
- Ensure the motor specifications match the drive settings, particularly the rated frequency.
- Verify that control signals to the drive are stable and within expected ranges. Erratic control signals can cause frequency fluctuations.
- Adjust the low reference frequency threshold parameters if the current settings are too restrictive or not suitable for your application.