Spindle Supplementary Temperature Fault

What does F07018 mean?

This fault is issued immediately if the actual spindle temperature (r4105) exceeds the fault threshold p4102[1]. Alternatively, if the alarm threshold p4102[0] is exceeded and the delay time set in p4103 expires without the temperature falling below the alarm threshold, this fault is also triggered. The fault requires acknowledgment and clears only when the temperature falls below the fault threshold, considering a fixed 2 K hysteresis.

• Severe overload on the spindle motor, causing rapid and excessive temperature rise beyond its fault threshold p4102[1].
• Catastrophic failure of the spindle's cooling system (e.g., complete fan failure, coolant pump stoppage, severe blockage).
• Faulty temperature sensor (e.g., KTY84, PT1000) providing an immediate, erroneous high temperature reading r4105.
• Mechanical failure within the spindle (e.g., seized bearings, severe crash) generating extreme localized heat.
• Incorrectly configured fault threshold p4102[1] set significantly below the spindle's safe operating limits, leading to premature tripping.

Click steps to track your progress.

1. 1

   1. Immediately stop all spindle operations and allow the motor to cool down to ambient temperature.

2. 2

   2. Measure the actual temperature of the spindle motor windings or housing using an infrared thermometer or thermocouple to verify r4105.

3. 3

   3. Check the spindle motor's cooling fan for proper operation, free rotation, and any physical damage.

4. 4

   4. Verify the integrity and resistance of the spindle temperature sensor wiring at the drive's input terminals for p4102[1].

5. 5

   5. Inspect spindle bearings for excessive play, noise, or signs of overheating (e.g., discoloration, burnt grease).

6. 6

   6. Compare the fault threshold p4102[1] with the spindle motor's manufacturer-specified maximum allowable temperature.