Step Drive
WPC-EDrive-ST is a single-axis stepper motor integrated driver with a network interface. Through the Step Drive panel, you can set the driver current, resolution, perform motion tests, and vibration suppression functions.
Driver Setup
Set the stepper motor's Run Current, Hold Current, and Microstepping resolution.
1. Current Setting Description
This driver supports multi-stage current setting. Please choose the setting value closest to your motor's rated current.
| Factor | Current Range 1A (A) | Current Range 2A (A) | Current Range 3A (A) |
|---|---|---|---|
| 0 | 0.03125 | 0.0625 | 0.09375 |
| 1 | 0.0625 | 0.125 | 0.1875 |
| ⋮ | ⋮ | ⋮ | ⋮ |
| 20 | 0.65625 | 1.3125 | 1.96875 |
| ⋮ | ⋮ | ⋮ | ⋮ |
| 31 | 1.0 | 2.0 | 3.0 |
2. Resolution Setting Description
Select Steps per Revolution.
| Step/Revolution | Description |
|---|---|
| 200 | Full step (1.8°/step) |
| 400 | Half step |
| ⋮ | ⋮ |
| 12800 | High resolution microstepping |
| 51200 | Maximum resolution |
3. Motion Control Test
Provides basic jogging and positioning test functions.
| Button/Parameter | Description |
|---|---|
| Servo on | Enable motor excitation. |
| ⬅ Reverse | Control motor to move in reverse direction. |
| ➡️ Forward | Control motor to move in forward direction. |
| Distance | Distance per move (Step). |
| Velocity | Movement speed (Step/sec). |
| Acceleration | Acceleration (Step/sec²). |
4. Status
| Status Indication | Description |
|---|---|
| Hit Rev Limit | Reverse limit switch triggered. |
| Hit Fw Limit | Forward limit switch triggered. |
| Pos Reached | Target position reached. |
| Vel Reached | Set velocity reached. |
| Stopped | Motor is stopped. |
| Over Torque | Torque overload alarm. |
| Driver Error | Internal driver error. |
| Cfg Reseted | Parameters reset. |
Anti-Vibration
Stepper motors are prone to resonance and vibration when running at low speeds. The "Low Speed Vibration Suppression" function can significantly improve smoothness.
Step 1. Set Test Range
Set a safe round-trip movement interval.
- Press Servo on to excite.
- Turn the motor to the end point, press Set End Position.
- Turn the motor to the start point, press Set Start Position.
Step 2. Adjust Anti-Vibration Parameters
- Turn on Enable to activate anti-vibration function.
- Press Round Trip to let the motor move back and forth automatically.
- Gradually increase speed and observe if the motor starts to vibrate.
- After finding the critical speed where vibration occurs, press Set Threshold to set this speed as the activation threshold for the suppression function.
- After completion, observe if the operation becomes smooth.
File Configuration
EDrive-ST supports configuration file export and import functions, facilitating quick copying of parameters to other machines or backup.
