Motor Stalled

What does F6 mean?

This fault indicates that the motor has stalled or is experiencing an excessive load, causing the drive output current to exceed the current limit set by parameter A089 [Current Limit]. This is an Auto-Reset/Run type fault configurable with parameters A092 and A093.

• Mechanical jamming or excessive friction in the driven machinery preventing motor rotation (e.g., conveyor belt jam, pump cavitation).
• Load torque exceeding the motor's rated torque capabilities, causing the motor to slow down or stop.
• Drive current limit A089 [Current Limit] set too low, tripping the drive before an actual motor stall occurs.
• Motor shaft, coupling, or gearbox failure preventing proper power transmission to the load.
• Insufficient motor torque at low speeds due to poor drive tuning or incorrect parameter settings (e.g., P010 [Boost]).

Click steps to track your progress.

1. 1

   Inspect the mechanical load connected to the motor shaft for obstructions, binding, or seized components by attempting to rotate the shaft manually.

2. 2

   Measure the motor output current on each phase (U, V, W) using a clamp meter during operation and compare it to the drive's current limit A089 [Current Limit].

3. 3

   Verify drive parameter A089 [Current Limit] is set to an appropriate value (typically 150-200% of motor FLA) and parameter P010 [Boost] for adequate starting torque.

4. 4

   Check for physical damage to the motor shaft, coupling, or gearbox that might impede rotation.

5. 5

   Temporarily disconnect the motor from the load (if safe and feasible) to determine if the motor runs without fault, isolating the issue to the mechanical load.