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This item includes:

3 PCS Nema 23 stepper motor 270 oz.in, 4 leads

3 PCS Stepper motor driver DM542, PEAK 4.2A, 128 micsteps

1 PCS Power Supply 350W/36V,input voltage 115~230VAC, output voltage 36VDC
1 PC Breakout Board
1 PC Parallel Port Cable for free

Features:

1.High torque, More smooth movement

2.High efficiency, energy-saving, low noise, low vibration, high start torque, low start current and reliable performance.

1.Stepper motor(Schrittmotor)

Detailed information

Part No.
23HS8430
Frame Size
NEMA23
Phase
2 Phase
Step Angle
1.8 degree
Current
3A
Rated Voltage
3V
Resistance
1Ohm/phase
Inductance
3.5mH/phase
Holding torque
270oz-in (1.9N.m)
Detent torque
6N.cm
Rotor inertia
480g.cm²;
Number of wire leads
4
Weight
1.05kg
Length
76mm
Matched drive
DM542A
Shaft
Single Shaft
Front shaft length
21mm
The diameter for motor shaft
6.35mm

Wiring dragram:

RED A+ , GRN A-, RED B+, BLU B-

2.Driver DM542

Introduction:

DM542 is a type of two-phase hybrid stepping motor driver, The drive voltage of which is from 18VDC to 50VDC. It is designed for use with 2-phase hybrid stepper motor of all kinds with 42mm to 86mm outside diameter and less than 4.0A phase current. This circuit that it adopts is similar to the circuit of servo control which enables the motor run smoothly almost without noise and vibration. Hording torque when DM542A run under high speed is also significantly higher than the other two-phase driver, what’s more, the positioning accuracy is also higher. It is widely used in middle and big size numerical control devices such as curving machine, CNC machine, and computer embroider machine, packing machines and so on.

Features:

· High performance, low price

· Average current control, 2-phase sinusoidal output current drive

· Supply voltage from 18VDC to 50VDC

· Opto-isolated signal I/O

· Overvoltage, under voltage, overcorrect, phase short circuit protection

· 15 channels subdivision and automatic idle-current reduction

· 8 channels output phase current setting

· Offline command input terminal

· Motor torque is related with speed, but not related with step/revolution

· High start speed

· High hording torque under high speed

Pins assignments and description:

1) Connector Pins Configurations

Pin Function	Details
PUL +,PUL-	Pulse signal, PUL+ is the positive end of pulses input pin PUL- is the negative end of pulse input pin
DIR+,DIR-	DIR signal: DIR+ is the positive end of direction input pin DIR- is the negative end of direction input pin
ENBL+	Enable signal: ENBL+ is the positive end of direction input pin. This signal is used for enabling/disabling the driver. High level for enabling the driver and low level for disabling the driver.
ENBL-	ENBL- is the negative end of direction input pin. Usually left unconnected (enabled)

2) Pins wiring diagram:

PC’s control signals can be active in high and low electrical level. When the high electrical level

is active, all control negative signals will be connected together to GND. When low electrical

level is active, all control positive signals will be connected together to public port. Now give

two examples( Open collector &PNP), please check them:

Fig 1. Input port circuit (Yang connection)

PC open connector output

Fig. 2 Input port circuit ( Yin connection)

PC PNP output

Note: When VCC=5V, R=0

When VCC=12V, R=1K, ＞1/8W

When VCC=24V, R=2K,＞1/8W

R must connect in the control signal part.

3. Function choice ( Using DIP pins to achieve this function)

1) Micro step resolution is set by SW 5,6,7,8 of the DIP switch as shown in the following table:

SW5

OFF

SW6

OFF

SW7

OFF

SW8

OFF

PULSE/REV

400

800

1600

3200

6400

12800

25600

1000

2000

4000

5000

8000

10000

20000

25000

2) Standstill current setting

SW4 is used for this purpose. OFF meaning that the standstill current is set to be half of the selected dynamic current and ON meaning that standstill is set to be the same as the selected dynamic current.

3) Output current setting:

The first three bits (SW 1, 2, 3) of the DIP switch are used to set the dynamic current. Select a setting

Closest to your motor’s required current

Output current (A)
SW1	SW2	SW3	PEAK	RMS
ON	ON	ON	1.00	0.71
OFF	ON	ON	1.46	1.04
ON	OFF	ON	1.92	1.36
OFF	OFF	ON	2.37	1.69
ON	ON	OFF	2.84	2.03
OFF	ON	OFF	3.32	2.36
ON	OFF	OFF	3.76	2.69
OFF	OFF	OFF	4.20	3.00

4) Semi-flow function:

Semi-flow function is that there is not step pulse after 500 ms, the driver output current automatically reduced to 70% of rated output current, which is used to prevent motor heat.

4. Power connections

(1)+V、GND：Power Supply.

+V: Power supply, 16~50 VDC, Including voltage fluctuation and EMF voltage. The max current is 5A.

(2) A+ A- B+ B-：Connecting 2 phase stepper motors.

The driver & 2-phase hybrid stepping motor use four-wire connection, the motor can be connected in parallel & series bipolar. As for bipolar connection, it is higher performance with high-speed, but the current of driver is larger (it is 1.73 times more than the motor’s winding current).
Connecting in series, the driver’s current is equal to the motor winding one.

5. Fixing

There should be 20mm of space, it can’t be placed next to other heating devices, to avoid dust, oil mist, corrosive gas, humidity and strong vibration places.

(Unit=mm)

6. Troubleshooting

1, the status on light’s indication

RUN: green, normal work light.
ERR: red, failure light, the motor with phase short-circuit, overvoltage and under-voltage protection.

2 Troubles

Alarm indicator	Causes	Measures
LED off turn	Wrong connection for power	Check wiring of power
LED off turn	Low-voltages for power	Enlarge voltage of power
Motor doesn’t run, without holding torque	Wrong connection of stepper motor	Correct its wiring
Motor doesn’t run, without holding torque	RESET signal is effective when offline	Make RESET ineffective
Motor doesn’t run, butmaintains holding torque	Without input pulse signal	Adjust PMW & signal level
Motor runs wrong direction	Wrong wires’ connection	Change connection for any of 2 wires
Motor runs wrong direction	Wrong input direction signal	Change direction setting
Motor’s holding torque is too small	Too small relative to current setting	Correct rated current setting
	Acceleration is too fast	Reduce the acceleration
	Motor stalls	Rule out mechanical failure
	Driver does not match with the motor	Change a suitable driver

3.Power Supply 350W-36V

Switching Power Supply 350W-V, output 36VDC, input 115~230VAC 10A

4.Breakout board

Description:
• Built in DB25 male connector.
• DB25 Output Pin:P1,P2,P3,P4,P5,P6,P7,P8,P9,P14,P16,P17.
• DB25 Input Pin: P10,P11,P12,P13,P15.
• DB25 GND Pin: P18-P25.
• Power supply: +5V DC.
• Built in C-class Optical-coupler.
• High quality with Surface-mount Tech

P2 P3 is set to X-axis for the X-axis pulse

P4 P5 is set to Y-axis, Y axis pulse

P6 P7 is set to Z-axis Z-axis pulse

The other can be set to A B C axis

A-axis pulse P8 P9 is set as the A axis

P14 is set to B-axis B-axis pulse P1

P16 P17 is set to C-axis, C axis pulse

Can also be set to the spindle control signal \ electrical permit

Input interface for the P10 P11 P12 P13 P15

Additional instructions：

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If you have problem,when you connect it,you contact me,I will help you.

Application:Our Stepper Motors are used on small to mid-sized CNC mills or milling machines, CNC lathes, Pick-n-place machines,Laser Engravers and Laser Cutters, Vinyl Sign Cutters, CNC Plasma Cutters, and CNC Foam Cutters. Carver machine ,Dispenser,Automazation,3D Printer,Stage lighting,instrument,laser equipment,scanner Dispenser,Logistics equipment,and so on.These motors have been used in precision telescope positioning systems and robots.

Part No.	23HS8430
Frame Size	NEMA23
Phase	2 Phase
Step Angle	1.8 degree
Current	3A
Rated Voltage	3V
Resistance	1Ohm/phase
Inductance	3.5mH/phase
Holding torque	270oz-in (1.9N.m)
Detent torque	6N.cm
Rotor inertia	480g.cm²;
Number of wire leads	4
Weight	1.05kg
Length	76mm
Matched drive	DM542A
Shaft	Single Shaft
Front shaft length	21mm
The diameter for motor shaft	6.35mm