SW OverCurrent

Hva betyr F063 ?

A software-defined shear pin level (programmed in A486, A488 [Shear Pinx Level]) has been exceeded for a duration longer than the set time (A487, A489 [Shear Pin x Time]). This indicates a sustained excessive mechanical load, triggering a protective trip designed to prevent damage to the driven equipment, not necessarily the motor or drive.

• Mechanical jamming or binding in the driven equipment causing the motor to draw current above the programmed shear pin level (Parameter A486 or A488).
• Motor operating under sustained overload conditions, possibly due to increased process demands or friction, exceeding the set current threshold (A486/A488) for the defined time (A487/A489).
• Incorrectly configured shear pin parameters (A486/A488 too low, or A487/A489 too long), leading to nuisance trips under normal operating load.
• Degraded motor or gearbox bearings increasing mechanical resistance and required torque, thus increasing motor current.

Klikk på steg for å spore fremgangen.

1. 1

   Identify and clear any mechanical obstruction or jamming in the connected machinery that could be causing excessive load.

2. 2

   Monitor actual motor current (Parameter A0-04) during operation and compare it to the drive's rated current and the programmed shear pin levels (A486, A488).

3. 3

   Check the configured shear pin levels (Parameter A486 and A488) and delay times (Parameter A487 and A489); adjust if they are too sensitive for the application's normal operating peaks.

4. 4

   Inspect the driven equipment (e.g., conveyor, pump, fan) for signs of mechanical wear, bearing issues, or lubrication problems that increase friction.

5. 5

   Perform an uncoupled motor test (if possible) to determine if the motor runs freely without load.

6. 6

   If sustained overload is due to increased process requirements, consider upsizing the motor, drive, or both, or reducing the process load.