Code

Name

Causes

Possible Solutions

dv7

Polarity Judge Timeout

There is a disconnection in the motor coil winding.

Measure the motor line-to-line resistance and replace the motor if a coil is disconnected.

The screws on the drive output terminals are loose.

Tighten the terminal screws to the correct tightening torque.
Note:

  • The drive detects this error if it cannot detect polarity in a pre-set length of time.

  • Do a Fault Reset to clear the fault.