The reason for the lack of action in the V-axis of the vibration knife control system

When the vibration knife control system (RDD6584G, RDD6616U, RDD6584V-NET) shows no action on the V axis, it can usually be investigated and analyzed from the following aspects:

1. Motor wiring connected incorrectly
   If the V-axis motor phase wires are connected incorrectly or the connector is loose, the motor may not rotate or may only vibrate. Especially for four-wire or eight-wire stepper motors, if phase A and phase B are wired incorrectly, the driver may output current, but the motor cannot establish a proper rotating magnetic field, resulting in no movement. It is recommended to check the motor wiring diagram and use a multimeter to measure coil resistance to confirm correct phase pairing before reconnecting to the driver.

2. Motor does not support split wiring configuration
   Some stepper motors do not support series, parallel, or half-coil wiring methods. If an incorrect split wiring configuration is used, it may result in insufficient torque or complete failure to rotate. This is particularly important for eight-wire motors, which must be wired according to the driver’s requirements. Otherwise, the V-axis may produce holding current noise but no actual movement.

3. Mainboard port damage
   If the pulse or direction signal output port for the V-axis on the control board is damaged, the driver and motor may both be functioning properly but will not receive control signals. Swapping the V-axis signal cable with the X or Y axis can help determine whether the issue is caused by a faulty mainboard port.

4. Incorrect driver signal voltage selection
   Leadshine drivers typically support either 5V or 24V control signal input, while most control boards output 5V pulse signals. If the driver’s DIP switch is mistakenly set to 24V mode, the 5V signals from the control board will not be recognized, resulting in no V-axis movement. It is important to verify that the driver’s input signal voltage setting matches the control board’s output level.