DM542 Stepper Motor Driver (4.2A)

Name: DM542 Stepper Motor Driver (4.2A)
Brand: DIYElectronics
SKU: 9MDTM542
Price: 358 ZAR
Availability: InStock

The DM542 Stepper Motor Driver offers high torque at all speeds – Ideal for CNC, 3D printing and machines requiring precise numerical value control.

SKU 9MDTM542

R358.00

VAT included Shipped within 1 day

The DM542 is one of the best value-for-money hybrid stepping motor drivers on the market, and is designed to drive bipolar hybrid stepper motors with outside diameters of between 42mm and 86mm at less than 4.0A phase current. By utilizing a similar circuit to typical servo control methods, the DM542 runs smoothly at both high and low speeds – with little to no noise or vibration.

Some of the top features of this stepping motor driver, when compared to more affordable alternatives like the TB6560, is that it maintains a high torque regardless of the speed at which it’s running. Additionally, this enhances the positional accuracy as well, making it ideal for professional applications within machines such as 3D printers, CNC milling machines and other machines with numerical control devices.

The DM542 also offers a semi-flow function, which automatically reduces the current down to 70% of the output current. This activates when the driver receives no pulse signals for 500ms, and essentially acts as a “semi-sleep” mode, to reduce power usage and prevent possible overheating between uses. To further prevent overheating or heat related problems, be sure to install this stepping motor driver away from other heating devices, and allow for 20mm of open space surrounding the unit for effective heat dispersion.

Electrical Specifications:
Input voltage	– 18VDC to 50VDC
Input current	– Less than 4.0A
Output current	– 1.0A～4.2A Peak (3.00A RMS)
Consumption	– Consumption : 80W ; Internal Limit : 6A
Working Temperature	– -10～45℃
Storage Temperature	– -40℃～70℃
Humidity	– No condensation, no water droplets. <90% RH
Gas	– Prohibition of combustible gases and conductive dust
Weight	– 300g

Features and Technical Specifications:
Average Current Control	– 2-Phase Sinusoidal Output Current Drive
Input/Output Method	– Opto-isolated Signal
Command Input Terminal	– Offline
Phase Current Setting Output Channels	– 8
Subdivision Channels	– 15
Motor Torque Control	– Relative to Speed ; Not Relative to Steps/Revolutions
Short Circuit Protection	– Overvoltage; Under-voltage; Overcurrent; Phase
Additional Features	– High Starting Torque and Speed
	– High Holding Torque at All Speeds
	– Automatic Idle-Current Reduction
	– Exceptional Performance/Low Price

Connector Pin Assignments and Descriptions

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. Often left unconnected (Enabled)

DIP Pin Functions and Function Choices

The DM542 Stepper Motor Driver utilizes the SW1 to SW8 DIP pins to control the function of the stepper motors, the output current, as well as whether the current must be on standstill or not. The first three (SW1, SW2 and SW3) pins define the output current settings and should be adjusted according to the dynamic current necessary for your motor. The next pin (SW4) determines the current standstill setting, and is essentially a soft on/off switch, which sets the current to half when the motor is not in use. The final four pins (SW 5, SW6, SW7 and SW8) are for setting the micro step resolution, defining the amount of pulses per revolution.

DIP Pins SW4 to SW8: Micro Step Revolution Settings Chart

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

DIP Pins SW1 to SW3: Output Current Settings

When deciding on these settings, be sure to check your stepper motors and set the output current to a value that best caters to your motors’ input current requirement.

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

Troubleshooting Chart

If you are experiencing problems relating to the DM542 Stepper Motor Driver, utilize the following chart, which notes some of the most common problems, as well as reasons for the problems and possible solutions.

Problem / Alarm	Potential Reasons	Possible Solution

LED off turn	Wrong connection for power	Check wiring of power
LED off turn	Low-voltages for power	Increase 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, but maintains holding torque	Low or absent input pulse signal	Adjust PMW & signal level
Motor runs wrong direction	Wrong wires’ connection	Change connection for any 2 wires
Motor runs wrong direction	Wrong input direction signal	Change direction setting
Motor’s holding torque is low or ineffective	Too small relative to current setting	Correct rated current setting
	Acceleration is too fast	Reduce the acceleration
	Motor stalls	Check for mechanical failure
	Driver does not match with the motor	Change to a more suitable driver