Code

Name

Causes

Possible Solutions

dv2

Z Pulse Noise Fault Detection

Noise interference along the encoder cable.

Isolate the encoder cable from the drive output line or a different source of electrical interference.

The encoder cable is disconnected or wired incorrectly.

Examine for wiring errors or disconnected wires in the encoder cable, and repair problems. Correctly ground the shielded wire of the encoder cable.

The drive is operating a motor with 24 or more poles at zero speed.

  • Set F1-46 = 1 [dv2 Detection Method Selection = MechanicalAngle Detection Method].

  • Increase F1-17 [Deviation 2 Detection Selection].

  • Increase F1-47 [Deviation 2 Detection Level].

    Note:

    If you change the setting of F1-47, the sensitivity of detection for dv2 can decrease.

The PG option or the encoder on the motor side is damaged.

Repair the wiring and re-energize the drive, then replace the PG option or the encoder if the problem continues.
Note:

  • The drive detects this error if it detects more than one Z pulse per rotation for the number of rotations set in F1-17 [Deviation 2 Detection Selection].

  • Do a Fault Reset to clear the fault.