Intelligent Motion Systems Motion Detector User Manual

22

Microstepping MForce PowerDrive Manual Revision R032008

Optocoupler Reference

The Microstepping MForce PowerDrive Logic Inputs are optically isolated to prevent electrical noise being coupled 
into the inputs and causing erratic operation. 

There are two ways that the Optocoupler Reference will be connected depending whether the Inputs are to be 
configured as sinking or sourcing.

Sinking

+5 to +24 VDC

Sourcing

Controller Ground

NOTE: When 

connecting the 

Optocoupler Supply, 

it is recommended 

that you do not use MForce 

Power Ground as Ground 

as this will defeat the optical 

isolation.

Constant

Current

Source

Optocoupler

+5 VDC

To Drive Logic

Optocoupler

Reference

Input

(Step Clock, 

Direction, Enable)