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How to set stepper motor current?

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How to set stepper motor current?

2023-02-03 09:10:26

Introduction

Setting the drive current of a stepper motor is crucial for optimal performance. The current affects torque, speed, overheating risk and reliability. This article provides a step-by-step guide to adjusting stepper motor current.

Determine Motor Current Rating

First, check the specifications of your stepper motor to find its maximum rated current. This is the highest current the motor windings can handle without damage. For example, a 1.5A rating means 1.5A max.

Select a Compatible Driver

Choose a stepper driver that matches or exceeds your motor's current rating. Driver inputs allow current control. Make sure it can supply the needed current and voltage.

Adjust Driver Current Setting

Use the driver's potentiometer, switch or digital input to set drive current. Stay within the motor's recommended range - high enough for torque yet not so high it overheats.

Find the Optimal Setting

Some trial and error may be needed to find the best current setting. Test performance and watch for overheating. Fine-tune the level until operation is smooth and reliable.

Conclusion

Setting stepper motor current properly improves performance and lifespan. Match the driver capability, stay in spec and fine-tune through testing. Correct current settings prevent issues like low torque and overheating.

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