It happened after I lengthened the hall sensor wire and U V W wire. Does it have any effect?
Hi KP, after reading this additional information, I now have a few questions for you:
- Does the fault occur under light or heavy load?
- By what length have the wires been extended?
- Have you used the same gauge wires (or preferably a thicker gauge) to extend the Phase Wires and Hall/Temperature Sensor wires?
- Have you ensured that decent soldered or crimped joins were made in the wires?
- Are you sure that none of the wires have inadvertently been transposed during the modification?
These vector controllers are designed specifically to work with certain motors, therefore lengthening the motor's Phase Wires may well have changed the overall resistance and/or inductance of the motor's stator windings, causing an incompatibility problem between controller and motor, especially if thinner wires have been used or poor connections were made.
It would probably have been much better to mount the controllers closer to the motors and then extend the Battery cables and control harness wiring, as this would not have affected the overall resistance or inductance of the stator windings.
Alan