• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Place of Origin: Shandong, China (Mainland)
  • Brand Name: keya
  • Model Number: KYDBL4875-2E
  • Motor Type: DC Motor
  • voltage range: DC48V
  • Max continue current: 42A
  • Max output current: 75A
  • operating mode: independent, Mixed, Speed, torque mode, 4Q mode, regenerative bracking
  • feedback: incremental encoder
  • control type: RS232, PWM, R/C, CLK, 0-5V, potentiometer
  • match with: BLDC servo motor
  • size: 190*130*77mm
  • weight: 1.5KG bldc motor speed driver
  • suitable: bldc motor speed driver for agv

Packaging & Delivery

Packaging Details standard export carton box
rs232 r/c control dual channel 24v 48v bldc motor speed driver 75amp for agv
Delivery Time 1-3 working days

rs232 r/c control dual channel 24v 48v bldc motor speed driver 75amp for agv


Model: KYDBL4875-2E


Product Description


KYDBL4875-2E is an intelligent brushless DC dual-motor controller. The brushless dual-motor driver can control two brushless DC motors at the same time. It adopts 32-bit high-performance MCU and advanced movement processing algorithm to realize internal electric differential function. The controller uses the Hall signal inside the motor as the rotor position feedback and works with the external incremental encoder (1000—2500 line) signal to control the movement of motor, realizing speed open-loop, close-loop modes, position mode and torque mode. It has two-way independent driver chip, two-way encoder processing chip, two-way Hall signal processing chip. Meanwhile, it has multiple failure alarm functions. It has two working modes: independent mode and mixed mode.
Independent mode: It can realize fully independent control of two-way motor, and the control signal part is controlled by two-way input signals. Two-way brushless DC motor can control the speed and direction of motor, separately.
Mixed mode: It can realize the synchronous control (forward, backward, left and right rotation) of two brushless motors.
The control signal has as many as 8 modes (wireless remote control, rocker, potentiometer, analog quantity, frequency, pulse width, RS232, CAN bus).



Specification for KYDBL4875-2E
Input voltage range DC48V (If you need 24v 36v or other voltage input, kindly informed us in advance)
Max continue current 40A
Max output current 75A
Minimum speed
 10 RPM in the speed close-loop mode; 1 RPM in the position mode.
Output +5V 5V DC  20mA  (It can power up the encoder)
Impulse input range

 500Hz—5000Hz (corresponding maximum speed)

 [Note] The minimum impulse frequency may change along with the setting of maximum speed.

Input range of duty ratio  0%-- 100% (input frequency range f ≤1KHz, recommend to use the frequency of 250Hz).
Temperature protection status When the temperature is 70℃, the controller will reduce output by overheating protection and will stop output when the temperature is 80℃.
digital output interface Maximum load capacity of 40V 1A
 Operating mode Independent mode, Mixed mode, Speed mode, Torque mode, Four-quatrant mode, Regenerative Bracking
 Feedback Incremental encoder
 Control ways RS232, PWM, CLK, R/C, 0-5V, Pontionmeter
 Protection Abnormalitise like over current, overheating, over voltage, less voltage and short circuit will start the protection function.
Working Temperature -20℃ --  +60℃
Ambient humidity Relative humidity less than 80RH
 Size L*W*H = 190*130*77 mm


Product Overview

Main Feature of rs232 r/c control dual channel 24v 48v bldc motor speed driver 75amp for agv

* Wide-range voltage input, 10-55V, max 60V.
* Intelligent PID control loop.
* Working mode: Speed open-loop, close-loop control, torque close-loop control, position close-loop control.
* External potentiometer, 0-5V analog quantity or pulse command control mode, RC (pulse width signal outputted by the receiver of aeromodelling remote control) control mode.
* Safety forward & reverse control, four-quadrant operation, support regeneration.
* Enable control function.
* Maximum current control.
* 4-way input port; the function can be defined as analog input, pulse input or digital input functions.
* 6-way digital (MOS tube open-drain) output, which can serve as the failure alarm status output of controller and can control the external relay to realize actions such as automatic disconnection of power.
* Abnormalities like overcurrent, overheating, overvoltage and short circuit will start the protection function.
* LED status indicator.
* CAN bus communication, see the detailed communication protocol when using it.
* RS232 communication, see the detailed communication protocol when using it.
* USB communication, see the detailed communication protocol when using it.


Related products


ModelRated volt/VRated currentMax currentController modeControl motor 
30ACAN, RS232, PWM, CLK, R/C, Potentiometer, PWM, 0-5V1pcs 
KYDBL24/4830-2E24V/48V15A30ACAN, RS232, PWM, CLK, R/C, Potentiometer, PWM, 0-5V2pcs 
KYDBL24/4850-1E24V/48V30A75ACAN, RS232, PWM, CLK, R/C, Potentiometer, PWM, 0-5V1pcs 
KYDBL24/4850-2E24V/48V30A75ACAN, RS232, PWM, CLK, R/C, Potentiometer, PWM, 0-5V2pcs 
KYDBL24/4875-1E24V/48V42A100ACAN, RS232, PWM, CLK, R/C, Potentiometer, PWM, 0-5V1pcs 
KYDBL24/4875-2E24V/48V42A100ACAN, RS232, PWM, CLK, R/C, Potentiometer, PWM, 0-5V2pcs 




ModelRated power/wRated volt/VRated speed/rpmRated Current/ARated Torque/N.m




 KY110AS0420-252000w48V2500rpm 55A 7.6N.M




rs232 r/c control dual channel 24v 48v bldc motor speed driver 75amp for agv



Company information


Jinan Keya Electron Science and Technology Co., Ltd, founded in 2001, has been trading in the research &development, manufacturing and sales of DC motor and control system for 15 years. Company set technology, talent, management and other resources advantages, to effectively integrate, has maintained a healthy, stable and rapid growth. The company has adopted ISO9001:2008 quality management system certification, products through the CE certification. More than 3000 large and medium-sized domestic equipment manufacturers designated as supporting products, and exported to the United States, Europe, Southeast Asia and other countries.


Our Service


We devote ourself to Research & Development, welcome Costom-made products, if you need some unusual products, let's have further communication.

rs232 r/c control dual channel 24v 48v bldc motor speed driver 75amp for agv


Delivery time: 1-3 working days after receive the payment

Products Application Cases Display



rs232 r/c control dual channel 24v 48v bldc motor speed driver 75amp for agv



 1.    Q: What are your main products?

      A: We produce various kinds of dc motor & controller.

2.    Q: How long have you been in this field?

      A: More than 15 years in this field.

3.    Q: Do you have your own R&D team?

      A: Yes. R&D is our core competitiveness, continuous innovation is just what we are seeking for all       the time. Some of our engineers have more than 20years experience in the industry, and we also         cooperate with colleges, scientific research institutions and large enterprises.

4.    Q: How soon can you deliver the goods?

      A: That depends on the exact model you order. For regular products, usually we will prepare some units in stock, we can deliver them within 3 working days.

5.    Q: Can you make the product according to customer’s requirements?

      A: Yes, welcome costom-made products.

6.    Q: What is your payment term?

      A: You can pay by TT, Paypal, Western Union.




Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
Trade Assurance
China (Mainland) | Manufacturer
Transaction Level:
Supplier Assessments:
4 Transactions 4,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $47,000
Learn More