i found this online so i think this will help you:
Quote:
A slow flashing Red LED indicates that the MDL-BDC detected one of the following fault conditions:
Power supply under-voltage
Over temperature
Over current
Limit switch activated in the current direction of motion
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Quote:
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The normally closed limit switch inputs provide a simple method for limiting range of motion. When a limit switch input is open, motor operation in that direction is disabled. Install jumpers if limit switch functionality is not required.
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go here if you need more info
i got this from:
http://tom-tech.com/first/wiki/image...ingStarted.pdf