MC8H Stepper Motor Driver

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Features:

High voltage Nema 42 stepper motor driver

8.0A, 85-265VAC

Support PUL/DIR and CW/CCW modes

Low noise, low vibration

Advanced DSP-based current control(0.5-8.0A) matches nema17-nema41

Easy setup via DIP switches for micro-stepping resolution(16)

We can offer stepper driver from 0.3A- 8.0A. Customization is also available.

Consult

Specification

Electrical indexes

Driver parameters	Minimum value	Rated value	Maximum value	unit
Output current	0.5	–	8.0	A
Input voltage	80	220	265	VAC
Input Pulse Width	250		5E+8	ns
Input Pulse Frequency	1		1M	V
Input signal voltage	3.6	5	24	VDC

Characteristic

Driver interface and wiring diagram

Power supply and motor wiring

CN1	Function
R-	AS-T
R+	AS-T

CN3	Function
E	Ground terminal
N	Powerful supply terminals (VAC80~265V)
L	Powerful supply terminals (VAC80~265V)

CN2	Function
E	Earth terminal
A+	Motor phase A
A-	Motor phase A
B+	Motor phase B
B-	Motor phase B

Item	Function
PUL+	Pulse control signal: effective pulse falling edge, pulse voltage of 5V~24V, maximum frequency of 1MHz.
PUL-
DIR+	Direction control signal: High and low level pulse signals, high level of 5~24V.
DIR-
ENA+	Enable control signal: When effective(high level 5~24V), motor is free. It is used for motor debugging.
ENA-
ALM+	Alarm signal output(OC). The maximum voltage is 24V, the maximum saturation current is 100MA
ALM-

Status indication and operating parameter setting

Dial switches	Function
SW1	Communication setting reserved
SW2
SW3
SW4	Self-testing
SW5	Single/Double pulse
SW6	Half/full current locking

Current setting

Phase current is set by “AMPER” knob, and the current value is shown in the table below.

Dial witches	0	1	2	3	4	5	5	7
Running Current	0.5A	1A	1.5A	2.0A	2.5A	3.0A	3.5A	4.0A
Dial witches	8	9	A	B	C	D	E	F
Running Current	4.5A	5.0A	5.5A	6.0A	6.5A	7.0A	7.5A	8.0A

Half current lockings

Automatic idle current reduction to reduce heat after motor stops moving for 0.1 second if SW6 is set “off”.

Subdivision setting

Subdivision is set by “STEP” knob, 16 kinds of subdivision are optional.

Dial witches	0	1	2	3	4	5	5	7
Subdivision(p/rev)	200	400	800	1600	3200	6400	12800	25600
Dial witches	8	9	A	B	C	D	E	F
Subdivision(p/rev)	1000	2000	4000	5000	8000	10000	2000	25000

Drive self-testing

The setting is carried out through SW4=ON. When the self-testing is started, the motor will rotate a circle and then automatically return to the initial position. It can be confirmed whether the driver power works normally and the motor wire connection is reliable.
Note: The external pulse signal will not be accepted under self-test conditions.

DIR/Pulse and CW/CCW pulse control

The two pulse control input selection is set by SW5.
CW/CCW mode: SW5=ON
PUL/DIR mode: SW5=OFF

Machine size