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FMD 2725A stepper motor driver:, it is good quanlity and competive price - details see: https://www.machineto.com/new-products-fmd2725a-stepper-motor-driver-2-5a-10234792

Package include:

• 1x FMD2725A Stepper Motor Driver

FMD2725Astepper motor driver

1,Brief introduction

FMD2725A is using THB7128 chips produced byJapan's Sanyo, after several optimization of high subdivision of R & D and production of the 2 phase stepper motor drive, suitable for driving small and medium-sized phase current is less than 2.5A 2-phase or 4-phase hybrid stepping motor. Due to the adoption of the new bipolar constant current chopper drive technology, using the same motor can output more speed and power than other drivers. The segmentation function make the stepper motor running accuracy improved, reduces vibrations and noise reduction.

2,Features

1.High-performance, low price.

2.Bipolar constant current chopping mode.

3.Power supply voltage 12 to 40VDC.

4.High-speed optocoupler signal isolation input.

5.20kHz chopping frequency.

6.Subdivision precision 1, 2, 4, 8, 16, 32, 64,128 optional.

7.Electrical input signal is TTL compatible.

8.Stationary current is automatically reduced by half.

9.Shape design is convenient for installation.

10.Maximum drive current is 2.5A.

11.Drive any 2.5A phase current of 2-phase or 4-phase hybrid stepping motor.

3,Applications

Suitable for a variety of small and medium-sized automation equipment and instruments , for example: Small engraving machine, SMT machine, etc.

4,wiring defined

Weak signal interface

Signal	Function
SP+	Pulse signal + end
SP-	Pulse signal - end
DIR+	Direction signal +end
DIR-	Direction signal-end
EN+	Enable signal +end
EN-	Enable signal -end

Strengths connection port

Signal	Function
VIN+	12to 40 v dc power supply input +end,it is recommended to use 24V3A
GND	DC power supply connection ground
A+	Stepper motor A + Phase terminal
A-	Stepper motor A - Phase terminal
B+	Stepper motor B+Phase terminal
B-	Stepper motor B - Phase terminal

NOTE:This drive does not contain anti-anti-interpolation circuit so non-input positive and negative power supply upside down! Otherwise it will damage the drive!

5,The electrical characteristics

Electrical Characteristics (T = 25 ° C)

Introductions	FMD2725
	Min	Type	Max	Unit
Output phase current	0.5	-	2.5	A
Input power voltage	12	32	40	V
Logic input voltage	3	5	7	V
Logic input current	5	10	15	mA
Stepper motor pulse frequency	0	-	150	KHz
Minimum pulse time	5	-	-	us

6,The use of the environmentandparameters

7,Mechanical installation size

8,Power supply

The supply voltage can work normally in between DC12V-40V, FMD2725 driver can use ordinary switch DC power supply, can also be used for transformer and the bridge rectifier and filter capacitor, capacitance desirable 2000U to 5000U. Note rectified voltage ripple crest does not exceed 40V.Recommended the user to use the 24V-32V DC supply , avoid the grid fluctuations over drive voltage operating range.

Note:

1. Wiring should pay attention to the power of positive and negative Do not be reversed;

2. In order to reduce costs, multiple drives can share a power supply. But it should improve the rated power and rated output current of the power and attention to cooling.

9,DIP switch settings

10,The current setting

Refer to the case of silk-screen diagram, clockwise current increases, the maximum 2.5A, counterclockwise current is reduced, minimum 0.5A.

11,Motor ,driver and controller wiring diagram

12,Electrical wiring

The FMD2725A driver can drive all phase current below 2.5A of 4-wire, 6-wire or 8-wire 2-phase / 4-phase motors, are detailed below 4-wire, 6-wire, 8 wire stepper motor connection:

13,Matching of the drive and motor

FMD2725A driver can drive the domestic and foreign manufacturers of 2-phase or 4-phase motor, in order to obtain the most satisfactory driving, you need to choose a reasonable supply voltage and current setting. Supply voltage determines the level of the high-speed performance of the motor, and the current set value determines the output torque of the motor.

Supply voltage selected

Generally speaking, the higher the supply voltage, the greater the torque motor at high speed, the more it can avoid the high speed out. But another aspect, the voltage is too high will lead to over-voltage protection, and can even damage the drive, but also in the high-pressure work, low speed vibrations.

The output current setting

For the same motor, the greater the current setting, the higher speed, the current motor and drive more heat. So under normal circumstances current is set to supply long-term work, warm but not overheating of the numerical work.

Note:the current settings after you run the motor for 15-30 minutes, if the motor temperature is too high, you should reduce the current settings. If the motor current setting, the motor output torque is not enough , please improve heat dissipation conditions , ensure the motor and drive are not hot.