A circuit board for the SLA7062M microstepping driver

[Edison4]

I have designed a circuit board for the SLA7062M Unipolar 3-Amp microstepping driver IC from Allegro/Sanken.
With CNC applications in mind, it features optically isolated inputs and an idle current reduction circuit.
As long as the board is receiving STEP pulses, it delivers full current to the motor. (The full current value is set with a potentiometer)
When the STEP pulses cease, the board will drop the motor current to 50% after a 2-second delay.
It also has a jumper to invert the DIRECTION signal if your motor is turning in the wrong direction. (No more need to swap the motor wires)

The boards are currently being fabricated & will be available for sale on November 1, 2005.
The PC board is $10, the SLA7062M is $12 and a modest $3 shipping charge.

www.techkits.com

[CNCezee]

hi Edison4,

i have only just found this thread, are the boards still available??

cncezee

[Edison4]

Yes, the SLA7062M chips and the PC Boards are still available at:

www.techkits.com

[Juancar]

Hi Edison, could you explain the function of the jumpers J4, J5, J6, J7??

[Edison4]

Jumpers J4-J7 allow the STEP and DIRECTION opto-isolators to be configured as either common ground or common +5VDC. If the inputs are driven by an external source that has only ground available, such as a PC parallel port, arrange the 4 jumpers horizontally. Then connect the parallel port ground to pin 5 on the P1 connector.

If the inputs are driven by open collector transistors or standard TTL gates, install the 4 jumpers vertically. Then connect the external +5VDC to pin 5 on the P1 connector.

-edison4

[thg]

as I turn on the signals step, they say, enable the board of pminmo with sla7062. http://www.pminmo.com/SLA7062/SLA7062.htm. send me an email if anyone knows thfirme@hotmail.com