stepper motor diver ST-28H:

1.high quality

2.favorable price

3.good service and delivery fast

• Place of origin: Jiangsu, China (Mainland), Changzhou, China
• Motor type: stepper motor driver
• Certifications: CE and ISO 9001
• Compliant with RoHS Directive
• Packing details: export carton
• Delivery lead time: 3-25 days
• Payment terms: T/T, L/C, PayPal, Western Union
• Supply ability: 100,000 pieces/month
• Color: black
• Product designation:
  • Step motor driver SMD-4.2 is an electronic device designed to operate with 2 or 4-phase stepper motor with maximum current per phase up to 4.2A
• Technical characteristics:
  • SMD-4.2 driver receives logic signals step, direction and enable and convert them into motor commutation
  • Motors shaft moves one angle step (or microstep) as the driver receives one step signal
  • One step (or microstep) executes as the front edge of the voltage pulse on the STEP input
  • Rotation direction depends on the voltage level and switches by changing voltage level on the DIR input
  • Motor can be urgent stopped by the active signal on the EN input
  • Maximum phase current and microstepping mode are set by switches at the driver frame
• Common characteristics:
  • Dimensions:
    • Maximum output current per phase: 5A
    • Minimum output current per phase: 1.2A
    • Microstepping modes: 1, 1/2, 1/4 and 1/16
    • Voltage input: 12/48V DC
    • Maximum overall dimensions: 26x95x121mm
  • Inputs DIR, step, EN:
    • High voltage level: 20-80V DC (please, connect current-limiting resistance when use high level voltage more, then 5V DC: 1kΩ for 12V DC, 2kΩ for 24V DC)
    • Low voltage level: 0-1V DC
    • Logic signal current: 10-16mA
    • Minimum step pulse length: 3μs
    • Direction setting time: 5μs

Port instructions

ST-28H  Driver Pin Port Description
CP+/CW+	Pulse/Forward pulse signal positive
CP-/CW-	Pulse/Forward pulse signal negative terminal
DIR+/CCW+	Direction level/Reverse pulse signal positive
DIR-/CCW-	Direction level/Reverse pulse signal negative terminal
FREE+/FREE-	Enable level positive end negative terminal
A+A-B+B-	Motor input port
AC20-50V	AC20-50V , DC36-80V
SW1~SW3	Subdivision combination code
SW4	Pulse input ON , Direction signal input OFF
SW5~SW8	Current combination DIP

Note : 1, When the input signal is greater than 5V , Need PUL, DR,ENA front end of resistance ,  General 12V plus 1.2K, 24V plus 2K resistance

2, DIP is set, it is necessary in the absence of power is set to take effect, change the broken power on again

 

Subdivision setting (SW1-SW3)

SW1	SW2	SW3	SW4	Subdivision
ON	ON	ON	ON	1
ON	ON	ON	OFF	2
ON	ON	OFF	ON	4
ON	ON	OFF	OFF	5
ON	OFF	ON	ON	6
ON	OFF	ON	OFF	8
ON	OFF	OFF	ON	10
ON	OFF	OFF	OFF	12
OFF	ON	ON	ON	16
OFF	ON	ON	OFF	20
OFF	ON	OFF	ON	32
OFF	ON	OFF	OFF	40
OFF	OFF	ON	ON	50
OFF	OFF	ON	OFF	64
OFF	OFF	OFF	ON	128
OFF	OFF	OFF	OFF	256

Current setting 

SW6	SW7	SW8	Current (A)
OFF	OFF	OFF	1.5
OFF	OFF	ON	2.0
OFF	ON	OFF	2.5
OFF	ON	ON	3.0
ON	OFF	OFF	3.5
ON	OFF	ON	4.0
ON	ON	OFF	4.5

ON

ON

ON

5.0

Company Profile :

Changzhou Sutai Electrica Appliance Co., Ltd., exporting stepper motors, motor drivers, BLDC motor and PM motor. We spcialize in this field for many years, with the strength of high quality and competitive price in China.

 

We have our own techinical department and we developed various models of stepper motor, we also have complete drawings for our motors. 
We can provide complete technical proposal for your project.
Any question about stepper motor, please contact me online or send me mail. We will reply you within 2 days!

 

AFTER SALE-SERVICE:

 

Terrific after-sales service: 24hours around the clock & 12 months Warranty

 

Life-long maintenance service for the product