Speed monitoring

What does F08 mean?

An immediate switch-off with inhibit occurs when the current controller operates at its set limit, indicating issues such as mechanical overload, line phase failure, motor phase failure, or exceeding the maximum speed in VFC operating modes. Parameter P501 is relevant for deceleration time.

• Mechanical overload on the motor
• Current controller working at set limit
• Phase failure in the supply system
• Phase failure in the motor
• Maximum speed for VFC operating modes exceeded

Click steps to track your progress.

1. 1

   Reduce the mechanical load on the motor

2. 2

   Check current limitation settings

3. 3

   Extend deceleration ramps and increase the set deceleration time (P501)

4. 4

   Check line phases at the inverter input

5. 5

   Check the motor cable and the motor phases for continuity

6. 6

   Reduce the maximum speed setting if operating in VFC mode