JKD7208S Nema34 2phase Stepper Motor Driver

JKD7208S is a new digital stepper motor driver by JKONGMOTOR. It adopts the latest 32-bit DSP digital processing technology. The drive control algorithm adopts advanced variable current technology and advanced frequency conversion technology. The driver has small heating, small motor vibration and stable operation. Users can set any subdivision within 200 ~ 51200 and any current value in the rated current to meet the application needs in most occasions. Thanks to the built-in micro-subdivision technology, the subdivision effect can be achieved even under the condition of low subdivision. The operation is smooth and the noise is ultra-small under low, medium and high speed. The driver integrates the parameter auto-adjust function, which can automatically generate optimal operating parameters for different motors to maximize the performance of the motor.

●New 32-bit DSP technology

●Ultra-low vibration noise

●Built-in high subdivision

●Automatic parameter adjustment function when power on

●Variable current control reduces the heating of the motor

●The current automatically halve at rest

●Can drive two phase stepping motors of 4, 6, 8 lines

●Optical isolation differential signal input

●The pulse response frequency can reach to 500KHz（Factory default 200KHz）

●The current setting is convenient and can choose between 0.1 to 7.2A

●Subdivision setting range is between 200 to 51200

●Has the protection function of overpressure, underpressure and overcurrent

Suitable for all kinds of small and medium sized automation equipment and instruments, such as: engraving machine, marking machine, cutting machine, laser lighting, plotter, cnc machine, automatic assembly equipment, etc. It use very well in the equipment that user expects small noise, and high peed.

1）Driver' s reliable working temperature control in 66 ℃, the motor' s working temperature control in  85 ℃

2）We suggest automatic half stream mode,when the motor is stopped and the current is reduced by half to reduce the heating of the motor and actuator

3）When installing the driver, use vertical side installation to make the cooling tooth form a stronger air convection. The fan shall be installed near the actuator in the time necessary to heat the heat and ensure that the driver works in the range of reliable working temperature.

1）Control signal interface circuit

2）High voltage interface

3）232 Communication interface

It is possible to connect a PC or STU debugger with a dedicated serial cable, and forbid charged plug. Through STU or the PC software ProTuner, the subdivision and current value, effective edge and single double pulse all can be set, and can also be used for the elimination and adjustment of the resonance point.

Note: JKD7208S and PC, text display or STU servo debugger connection cable must be special cable,please confirmwith us before use.

1）Working (dynamic) current setting

2） Static current setting

Static current can set by SW4 DIP switch settings, off means the static current is set to half of dynamic current, on means static current and dynamic current is the same. SW4 should be set to off for general use, can reduce the heating of the motor and the driver. About 400ms after the pulse train stopped it will automatically reduced to half current (60% of the actual value), the heat will reduced to 30% theoretically .

 If switch the SW4 back and forth within 1 second, the driver can auto-complete the motor parameters and internal parameters adjustment; when the conditions like motor, supply voltage changes, please conduct a self-tuning, otherwise, the motor may not run normal. Note that the pulse can not be input at this time and the direction signal should not change.

Method 1:SW4 from on to off, and then off back to on in 1 second;

Method 2: SW4 from off to on, and then by the dial back to off within 1 second.

Note: This model has power-on auto tuning function.

JKD7208S can working normally in the specified range of voltage, and use non-regulated DC power supply is best, also can use transformer reduction + bridge rectifier + capacitor filter. However,should notice that voltage ripple peak value after rectifier should not exceed its maximum specified voltage. It is recommended that users use DC voltage lower than the maximum voltage to supply power and avoid the fluctuation of power grid beyond the working range of driver voltage.

If using a regulated switching power supply, be aware that the output current range of the switching power supply needs to be maximized.

Please note:

1) When wiring, pay attention to the positive and negative poles of the power supply.

2) Best use non-regulated power supply;

3) When using non-regulated power supply, the power supply current output capacity should be greater than 60% of the driver set current;

4) When use regulated switching power supply, the output current of the power supply should be greater than or equal to the working current of the driver;

5) To reduce costs, two or three drives can share a power supply, but should ensure that the power supply is large enough.

JKD7208S can be used to drive 4,6,8-wire two-phase, four-phase hybrid stepper motor, step angle of 1.8 degrees and 0.9 degrees are both applicable. When selecting a motor, it is mainly determined by the torque of the motor and the rated current. The size of the torque is mainly determined by the motor size. The motor torque is large for large size; and the current is mainly related to the inductance, small inductance motor has high speed performance, but the is current larger.

1、Q: Are you factory?

A：Yes, we are factory, and we produce stepper motor/driver, Servo motor/driver, BLDC motor/driver...

2、Q: How to select models?

A：Before purchasing, please contact us to confirm model No. and specifications to avoid any misunderstanding.

3、Q: How do you ship the goods?

A: Sea and by air, also accept customer appointed.

4、Q: Can I test sample?

A: Yes, sample charged can be offered for testing.

5、Q: Can we be agent or distributor?

A: Yes, welcome and we will support you.

6、Q: Can you do OEM or ODM service?

A: Yes, we have R&D department and accept OEM and ODM service.