Drive: Motor Temperature Sensor Fault

What does F07016 mean?

A critical error was detected during the evaluation of the motor temperature sensor (configured via p0600 and p0601). This fault signifies severe problems like wire breakage, a disconnected sensor (KTY resistance > 1630 Ohm), or measured resistance that is too low (PTC < 20 Ohm, KTY < 50 Ohm). This fault often occurs after alarm A07015 has been active for the time specified in p0607, posing a direct risk of motor overheating and damage if left unaddressed.

• Complete open circuit in the motor temperature sensor wiring (e.g., full wire breakage) causing no signal detection by the drive.
• Motor temperature sensor (e.g., KTY84-130 or PT1000) internally failed or short-circuited, providing an invalid resistance value.
• Incorrect motor temperature sensor type or connection configured in P0600 or P0601, leading to an interpretation error by the drive.
• Drive's analog input circuitry for the temperature sensor is defective, preventing accurate measurement and evaluation.
• Severe and persistent electromagnetic interference corrupting the sensor signal, leading to a critical fault condition.

Click steps to track your progress.

1. 1

   Power off the drive, disconnect the motor temperature sensor cable at the drive's control unit (e.g., terminal X10), and measure the resistance of the sensor element directly. Verify it falls within the expected range (e.g., KTY84: 580-600 Ohm at 20°C).

2. 2

   Check parameter P0600 (Motor temperature sensor type) and P0601 (Motor temperature sensor connection) to ensure they are accurately set for the installed sensor type.

3. 3

   Perform a continuity test on each conductor of the motor temperature sensor cable from the motor terminal box to the drive's X10 terminal to detect breaks.

4. 4

   Inspect the motor terminal box for moisture ingress, corrosion, or loose connections impacting the temperature sensor wiring.

5. 5

   If sensor and wiring test good, temporarily set P0600 to 0 (No sensor) to isolate if the fault is internal to the drive's control unit (ensure alternative thermal protection is in place).