Speed Control
Four quadrant pulse width adjustment controller
I.Product characteristics:
This series of speed controller is a low voltage 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 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)
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: 50K
7. Revolving speed (standard precision %): 1 %
8. Starting/braking time: 1-20 S
9. Environment temperature: -10~+50
10. Environment humidity: 80RH(no moisture condensation)(relative humidity)
11. Insulation and voltage resistance: 1100V 1 minute
12. Insulation resistance: > 20 M
13. Leakage current: 0.9 mA
14. Weight: 0.25Kg
15. It is applicable for tombarthite, permanent magnet and separately excited motor
III.Driver terminal function diagram:
IV.Description of control terminal's functions:
1. EN (enable control)
During motor operation, simply connect/ disconnect EN with COM to control the start and stop of motor
Connect EN terminal with COM, EN terminal is effective, at this time regulate external speed potentiometer and motor is in normal operation.
EN terminal suspends in the air or is not connected, EN terminal is invalid; circuit of controller is blocked and motor stops.
2. DIR (direction control)
During motor operation, simply connect/ disconnect EN with COM to reverse the motor rotation. It doesn't need external reversing contactor and will not result in electric motor parts or other components overheating or burning down.
Connect DIR terminal with COM, DIR terminal is effective, motor is in negative rotation.
DIR terminal suspends in the air or is not connected, DIR terminal is invalid; motor is in positive rotation (runs in opposite direction as above mentioned).
3. C E (OC door alarm output)
The internal design of "OC door alarm output" is that over-current signal is transmitted through an opto-coupler to give alarms. When over-current is detected on the controller, over-current signal will be immediately sent to diode of opto-coupler for break over and then transmitted to C, E ports. The client can wire as their own requirements, as shown in Figure 1, connect to over-current indicator, Figure 2, relay actuation after over-current to give alarms.
Internal wiring diagram of "OC door alarm output" is shown as follows:
OC door alarm output
Alarm indicator output
Figure 1: Wiring description of alarm indicator output
Relay coil
Figure 2: Wiring description of alarm relay output
4. S1 S2 S3 signal output terminal
Such controller has two control modes of external speed potentiometer control and external analog quantity input. Description of various terminals is as follows:
S1 Terminal: external power+10V ,
S2 Terminal: signal input terminal
S3 Terminal: GND (grounded).
4.1 When external speed potentiometer control is used, S1, S2, S3 terminals shall be connected with external potentiometer as shown in VI. Driver terminal function diagram to regulate external potentiometer for speed governing
4.2 When external analog quantity input control is used, speed can be controlled through S2 and S3 input, both 0-5V and 0-10V are OK.
Analog quantity input
V.Description of indicator:
1. POWER (Green) power indicator
If the controller is charged, this indicator lights up to indicate that controller is under normal operation.
2. (Red) over-current indicator turns red to indicate that output current of the controller exceeds client's preset current, and the controller will automatically limit the output current to such value.
VI.Regulation description of functional potentiometer:
9.1 MAX (maximum revolving speed limit)
It is used for limiting motor's maximum revolving speed. Increase in clockwise rotation and decrease in counterclockwise rotation.
9.2 IR ( compensation)
Regulate "IR" enable motor work under different loads and keep revolving speed constant (normally default is 0), Increase in clockwise rotation and decrease in counterclockwise rotation.
9.3 RAMP (soft start/ stop)
Regulate "RAMP" to set motor's starting and stopping time (1-20 S). Increase in clockwise rotation.
9.4 (current limit regulation)
Regulate "" to set over-current protection value of the controller; regulating range is 0-20A, Increase in clockwise rotation and decrease in counterclockwise rotation. When reaches over-current limit value, over-current indicator (Red) lights constantly and current is be limited to such value, at this time, continue to regulate the external potentiometer, current value is invariant( i.e. amplitude limiting).
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Model Number : DC24/20BL-4Q02
Motor Type : Motor