No.

(Hex.)

Name

Description

Default

(Range)

F1-18

(03AD)

Deviation 3 Detection Selection

Sets the number of rotations necessary to detect conditions that invert the torque reference and rate of acceleration and cause dv3 [Inversion Detection].

10

(0 - 10)

When the drive detects these two conditions at the same time for the number of times set in F1-18, the drive will detect dv3.

  • The torque reference and acceleration are in opposite directions. For example, torque reference is in forward run and the acceleration is in a negative direction.

  • The difference between the speed reference and the actual motor speed is more than 30%.

Note:

  • Reference the setting value for E5-11 [Encoder Z-Pulse Offset] and the δθ value found on the motor nameplate. A usual cause for a dv3 fault is an incorrect E5-11 setting.

  • Set F1-18 = 0 to disable the function.