Audited Supplier
LK4Q02
Automatic Control, Monitoring
New
DC Motor Speed Controller
Motor Equipment
1:100
1 %
1-20 S
-10ºC~+50ºC
≤80rh(No Moisture Condensation)
Lulanjiu
China
Product Description
Please read this operation manual thoroughly before using this device.
Any failures and damages caused by non-compliance of precautions stipulated in this operation and
installation manual are beyond the scope of warranty and the manufacturer disclaims any responsibility
for them. This manual must be carefully kept. In case of any question, please contact us!
This picture represents a kind of important notice or warning.
Safety precautions
· Installation, connection and commissioning of this device shall be carried out by professionals.
· Do not install, remove or replace device circuit under charged circumstances.
· Please make sure that necessary protectors are mounted between power input end of this device and
power supply (storage battery) to avoid accidents or fatal damages; Devices need to be mounted:
over-current protector, fuse, emergency switch.
· Isolation and insulation protection between device and ground as well as devices shall be well
equipped.
· In case that charged commissioning of this device is really needed, well-insulated nonmetal special
screwdriver or special commissioning tools shall be used.
· This device shall be installed in well-ventilated environment.
· This device shall not be directly exposed to abnormal environments with high humidity, dust,
corrosive gas and intense vibration.
I. Product characteristics:
This series of speed controller is a low voltage DC four-quadrant regeneration pulse width controller
adopts special single-chip intelligent control system and has rapid response speed, steady operation,
reliable work status and multiple protection functions.
SMT technology, small size
Pulse width modulation
Low noise during operation, high efficiency, and low maintenance cost which better enhance the service
life of DC motor.
Four-quadrant regenerative operating mode
Regenerative braking function
It doesn't need external reversing contactor and will not result in electric motor parts or other components
overheating or burning down.
Enable/ reversing terminal
To realize certain functions by using simple passive switching value or transistor collector open circuit.
Status indicator light
Power supply indicator and over-current alarm indicator can provide the visible status of speed
controller.
Output current setting function (amplitude limiting)
Torque compensate function
Double closed-loop PI regulation(current, voltage)
Standard analog quantity signal control
Analog quantity: 0-6V 0-10V or controlled by potentiometer
A broader scope of input voltage:20-55V
II. Performance indexes
1. PWM pulse width modulation
2. Speed ratio:
1:100
3. Control potentiometer:
(1K ...50K )/2W
4. Input voltage:
20-55V VDC
5. Output current:
0-20A (amplitude limiting)
6. Input impedance:
≥50KΩ
7. Revolving speed (standard precision %):
1 %
8. Starting/braking time:
1-20 S
9. Environment temperature:
-10ºC~+50ºC
10. Environment humidity:
≤80RH(no moisture condensation)(relative humidity)
11. Insulation and voltage resistance:
1100V DC 1 minute
12. Insulation resistance:
> 20 MΩ
13. Leakage current:
≤ 0.9 mA
14. Weight
0.25Kg
15. It is applicable for tombarthite, permanent magnet and separately excited motor
III. Boundary dimension: see figure below 112*76*33mm
IV. Installation requirements:
WARNING
1. Controller cannot be installed, connected or removed under charged circumstance. Otherwise
accidents or severe damages may be caused. You should read and understand the details of "safety
warning"(Page 1) before installation, and obey the rules strictly.
2. Drive element is sensitive to electrostatic magnetic interference shall be kept away from
environments where static is easy to be generated; otherwise, speed controller may be damaged.
3. The driver shall be kept away from dust, high humidity environment and prevented from
accidental contact. Sufficient space shall be reserved around the driver for easy ventilation and
regulation.
4. When fixed, the driver shall be kept from other heat sources. Guarantee that the driver works in
the specified environment temperature range.
5. The driver shall not be installed on equipments with extreme vibration; if not, precaution
against vibration shall be taken.
V. Wiring requirements:
1. Do not connect wire under charged.
2. Insulated connection, shielded wire which match with driver's voltage current shall be selected and
connected, specifications of driver's power input wire and motor's wire are shown below:
3. Signal line and control line shall adopt shielded wire and shall be separated with power input wire and
output wire.
WARNING
In any cases, signal line and logic control line shall not be bound, mixed and wired with power input
wire, output wire (motor line) and other power lines. Induced voltage generated may cause interface,
malfunction or directly damage the driver.
4. The driver do not have internal power supply reverse connection protection function, make sure that
wiring between power input and driver is correct, otherwise the driver may be damaged.
5. Proper tools shall be used for wiring and make sure that wiring is correct.
VI. Driver terminal function diagram:
