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LMD7208S Digital Stepper Driver 0.1A - 7.2A DC24V - 75V for Nema 17-34 Stepper Motor

● Acceleration/deceleration time setting
● Motor pole pair selection
● Open/closed loop control
● Built-in potentiometer RV speed control
● External potentiometer speed control
● External analog signal speed control
● PWM speed control
● Pulse frequency speed control
● Maximum current output setting
● Motor blocking torque holding
● Alarm indication
● Restarting
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  • LMD7208S

  • LeanMotor

  • 10 Pcs

Description:

BLD7208S 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.


Application

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.


BLD7208S Driver Features：

  • 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


Hybrid Stepper Motor Driver Description：

BrandLeanMotor
ModelBLD7208S
Driver TypeStepper Driver
DC / ACDC
Input Voltage24V - 75V
Output Current0.1A - 7.2A
Subdivide Setting8 (400 - 40000)
Storage Environment-20℃ - 80℃



Using environment and parameters

Cooling methodNatural cooling or forced air cooling
Using environmentoccasionCan not be placed next to other heating equipment, should avoid dust, oil mist, corrosive gas, too big humidity and strong vibration place, prohibit to have combustible gas and conductive dust
temperature-5℃ ～ +50℃
humidity40 ～ 90%RH
vibration5.9m/s2MAX
Storage temperature-20℃～80℃
Using altitudeBelow 1000 metres
WeightAbout  280 g


Electrical indicators

Instruction

BLD7208S

Minimum

Typical

Maximum

Unit

The output current

0.1
-7.2A

Input voltage

244875VDC

Control signal input current

61016mA

Control signal interface 

4.5528VDC


Interface Signal Description：

PinsFunctions
PULPulse signal
DIRDirection signal
VCCPulse direction enable power supply
ENA-Enable signal
A+A phase of stepper motor
A-A phase of stepper motor
B+B phase of stepper motor
B-B phase of stepper motor
GND
DC power input：0V
VDCDC power output：18 ~30V


Current setting

1）Working (dynamic) current setting



Output peak current


Output average current 

SW1SW2SW3

Current self-setting

Default[2.0A]

ONONON

When SW1, SW2, SW3 are set to off off off, the required current can be set by PC software,max 7.2 A, resolution 0.1 A. Default current is 2 A without setting

3.08A2.57AOFFONON
3.77A3.14AONOFFON
4.45A

3.71A

OFFOFFON

5.14A

4.28AONONOFF

5.83A

4.86A

OFFONOFF

6.52A

5.43A

ONOFFOFF

7.20A

6.00A

OFFOFFOFF


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 .


2. Subdivision setting


Step/Rpm
SW5SW6SW7SW8
400ONONONON
800OFFONONON
1600ONOFFONON
3200OFFOFFONON
6400ONONOFFON
12800OFFONOFFON
25600ONOFFOFFON
51200OFFOFFOFFON
1000
ONONONOFF
2000OFFONONOFF
4000ONOFFONOFF
5000OFFOFFONOFF
8000ONONOFFOFF
10000OFFONOFFOFF
20000ONOFFOFFOFF
40000OFFOFFOFFOFF



Digital BLDC Motor Driver Dimension :

JKBLD300 V2


57/60 BLS Series BLDC Motor Driver Manual:





1, Q: The motor does not turn and no holding torque:

     A: ① check whether the power line is connected to the wrong voltage is too low, need to increase the voltage or correct the power line

         ② check whether the motor wiring is correct, if not correct motor wiring. Check if the motor wiring is correct, if not, correct the motor wiring.

         ③ Whether the enable signal is valid, resulting in the motor does not work.

         ④ Is the subdividing parameter correct?

         ⑤ Is the current parameter correct?


2、Q：Motor does not rotate but has holding torque:

      A: ① The phase sequence of motor wires is wrong, need to swap any two wires.

          ② Pulse signal input is wrong, need to check the pulse wiring.


3、Q: The motor torque is too small:

      A: ① Phase current setting is too small, need to set the phase current corresponding to the motor.

          ② acceleration is too fast, reduce the acceleration value

          ③ motor blocking, need to rule out mechanical problems

          ④ drive and motor mismatch, need to replace the appropriate drive


4、Q：Motor steering error:

      A: ① motor line phase sequence is wrong, need to swap any two wires

          ② motor line has a broken circuit, check and connect the right


5、Q：The alarm indicator light is on:

     A: ① Is the motor wire connected incorrectly

         ② Whether there is over-voltage and under-voltage conditions

         ③ Motor or driver is damaged


6、Q：Motor acceleration blocking:

     A: ① short acceleration time

         ② motor torque is too small

         ③ Low voltage or current


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