Motor temp. surveillance defective

What does F221 mean?

The DIAX04 SSE-03VRS drive detected an issue with the motor temperature monitoring circuit, indicating that the sensor signal is invalid or missing. This prevents the drive from reliably protecting the motor from overheating, thus it shuts down to prevent potential damage. This could be due to a wiring issue, sensor failure, or an internal drive fault.

• Motor temperature sensor wiring is open, shorted, or incorrectly connected to the DIAX04 SSE-03VRS drive.
• The motor temperature sensor itself is defective.
• Drive's input circuit for the motor temperature sensor is faulty.
• Motor temperature sensor type configured in the DIAX04 SSE-03VRS does not match the actual sensor (e.g., PTC selected, but KTY installed).
• Poor connection or oxidation on the sensor terminals at the drive or motor.

Click steps to track your progress.

1. 1

   Inspect the motor temperature sensor wiring from the motor to the DIAX04 SSE-03VRS drive for continuity, shorts, or damage.

2. 2

   Verify the motor temperature sensor type configured in the DIAX04 SSE-03VRS matches the sensor installed in the motor.

3. 3

   Measure the resistance of the motor temperature sensor at its terminals. Compare with the sensor's characteristic curve or expected values (e.g., ~200 Ohms for PT100 at 0°C).

4. 4

   Check the connection terminals for the sensor on the DIAX04 SSE-03VRS for looseness or corrosion.

5. 5

   If wiring and sensor are confirmed good, consider a fault within the DIAX04 SSE-03VRS drive's temperature input circuit.