4 Axis Nema 23 stepper motor 425 oz & Driver DM542A CNC

Technical Specifications

Part No.:                     23HS9430

Frame Size:                NEMA23

Phase:             2 Phase

Step Angle:                1.8 degree

Current:                3 A

Rated Voltage:          4.8V

Resistance:                 1.6Ohm/phase

Inductance:                  6.8 mH/phase

Holding torque:           425 oz-in     (2.8N.m)

Detent torque:               12N.cm

Rotor inertia:                800 g.cm²

Number of wire leads:   4

Weight:                            1.7 kg

Length:                             112 mm

Matched drive:DM542A

Shaft:Single Shaft

Front shaft length               21mm

The diameter for motor shaft is 8mm

 

 2) Pins wiring diagram:

                     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:

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	1.91	1.36
OFF	OFF	ON	2.37	1.69
ON	ON	OFF	2.84	2.03
OFF	ON	OFF	3.31	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
	Low-voltages for power	Enlarge voltage of power
Motor doesn’t run, without holding torque	Wrong connection of stepper motor	Correct its wiring
	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
	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

 

7. Driver Wiring

A complete stepper motor control system should contain stepper drives, DC power supply and controller (pulse source).