Hi All,

I would be grateful for some help to make my first step :D

I am using the following items:

1x arduino - for step signal
1x sigma 5120 driver
1x 60BYGH401-03
1x 36v psu
1x ATX psu

I have the motor wired in bipolar series configuration following the datasheet, the 36v psu and a 5v rail from the ATX psu are connected to the driver.

Using the arduino I am outputting pulses to pin 6 I have tried various pulse lengths from 50 microseconds to 200 and also in the milisecond range from 50 to 1000.

Currently there appears to be holding torque on the motor and an audible hum, it also warms to the touch so I assume that the motor is wired up correctly. Upon sending pulses to pin 6 the hum frequency changes slightly but there is no actual movement.

Any idea's / suggestions on what I may have missed would be greatly appreciated!

Thanks,
Sam