1 

GND 

Signal Ground

2 

STP 

The edge of step pulse on this input ad-

vances the motor one increment. The

size  of the increment is dependent upon

the settings of the resolution.

3 

DIR 

This input is used to change the direc-

tion of the motor.

4 

+5V 

This +5VDC input is used to supply pow-

er to the isolated logic inputs.

5 

ENABLE 

This input is used to enable/ disable the

output section of the driver. When in a 

Logic HIGH state (open), the outputs are

enabled.

6 

RESET 

When LOW, this input will reset the driver

(phase outputs will disable).

7 

FAULT OUTPUT 

This output indicates that a short circuit

condition has occurred. This output is 

active LOW.

8 

FULLSTEP OUTPUT 

This output indicates when the driver

is positioned at full step. This output

can be  used to count the number of

full steps the motor has moved, regard-

less of the  number of microsteps in be-

tween. 

Connector 2

PIN# 

FUNCTION 

DETAILS

1 

REDUCE CURRENT 

Phase Current Reduction Adjustment

2 

CURRENT 

Phase Current Adjustment

3 

GND 

Power Ground. The ground, or return, of

the power supply is connected  here

4 

V+ 

Motor Supply Voltage. +18V to +80VDC

5 

~PHB 

~PHASE B of the stepping motor

6 

PHB 

PHASE B of the stepping motor

7 

~PHA 

~PHASE A of the stepping motor

8 

PHA 

PHASE A of the stepping motor

ELECTRICAL SPECIFICATIONS

• INPUT VOLTAGE: +18 to 80

• DRIVE CURRENT(PEAK):  0.1 to 7 Amps

• ISOLATED INPUTS: Reset, Enable, Step, Direction

• STEP FREQUENCY (MAX): 2.5 MHz