Contents

13

2

nd

2

Over-voltage protection

3

rd

4

Phase error protection

12. Frequently Asked Questions

In the event that your driver doesn’t operate properly, the first step is to identify whether the problem

is electrical or mechanical in nature. The next step is to isolate the system component that is causing

the problem. As part of this process you may have to disconnect the individual components that make

up your system and verify that they operate independently. It is important to document each step in

the troubleshooting process. You may need this documentation to refer back to at a later date, and

these details will greatly assist our Technical Support staff in determining the problem should you

need assistance.

Many of the problems that affect motion control systems can be traced to electrical noise, controller

software errors, or mistake in wiring.

Problem Symptoms and Possible Causes

Symptoms

Possible Problems

No power

Microstep resolution setting is wrong

DIP switch current setting is wrong

Fault condition exists

Motor is not rotating

The driver is disabled

Motor rotates in the wrong direction

Motor phases may be connected in reverse

DIP switch current setting is wrong

The driver in fault

Something wrong with motor coil

Control signal is too weak

Control signal is interfered

Wrong motor connection

Something wrong with motor coil

Erratic motor motion

Current setting is too small, losing steps

Contents

14

Current setting is too small

Motor is undersized for the application

Acceleration is set too high

Motor stalls during acceleration

Power supply voltage too low

Inadequate heat sinking / cooling

Automatic current reduction function not being utilized

Excessive motor and driver heating

Current is set too high