Product introduction

JD1 series electromagnetic adjustable speed motor system is the Ministry of machinery and electronics industry jointly designed products in China, is the country's tenth batch of joint promotion of energy-saving products, speed control for electromagnetic adjustable speed motor, stepless adjustable speed with constant torque, when the load is when fans and pumps, obvious energy-saving effect.

JD1A common pointer-type manual adjustment.

Widely used in light industry, paper-making and food processing lines, and other fields.

Main technical parameters
Power supply: ~ 220V ±% frequency 50~ 60Hz
Maximum output rating: DC 90V5A
Controllable power: 11~ 40KW
Speed: three-phase voltage frequency speed ratio ≥ 2V/100r/min
Rate of change of speed: ≤ 2.5%
Speed accuracy: ≤ 1%
Speed range: 1420~ 100 cycles/min
Note: when more than 8A 12A, which is more than 30 minutes at a time

JD1A-control panel layout

Basic principle of operation

JD1A series motor control equipment is from the speed controller, phase-shift trigger thyristor voltage controller and speed feedback link of composition.
Figure 1 installation basic circuit diagram, schematic diagram Figure 6 installation. From the diagram , Thyristor voltage controller and speed feedback link of composition. Can see, speed instruction potentiometer given of signal voltage and speed generator feedback of signal compared Hou, its poor value signal was into speed regulator (or Qian Reset zoom device) for Zoom, zoom Hou of signal voltage and sawtooth wave overlay, control transistor of guide line zoom, zoom Hou of signal voltage and sawtooth wave overlay, control transistor of guide control Silicon of open angle, makes turned poor clutch device of exciting current get control, that turned poor clutch device of output speed with exciting current of change and change, In order to achieve wide range adjustment of the output speed of electromagnetic adjustable speed motor.

JD1A controller wiring

JD1A controller before using test

1, the controller figure 2 wiring check for errors and then proceed to the next step.
2, plugged in and the main switch on the top panel, when the rotating speed adjustment potentiometer on the Panel, and 100V DC voltage measuring step voltage of output should be 0~90V, argues that the open-loop works normal.
3, electromagnetic adjustable speed motor starting controller to enter closed loop operation, the output speed of the motor change over panel potentiometer for adjusting the speed of rotation.

JD1A type controller of adjusting

Because of the JD1A-type electromagnetic adjustable speed motor controller applied to 0.55~90kw, when the user uses, must be carried out according to the motor control adjustments as follows:
1, tachometer corrections: discrepancies due to the output voltage of tachogenerator before use must be based on actual output of electromagnetic adjustable speed motor speed adjusting for a tachometer. Adjust motor speed potentiometer to a certain speed, using isometric-style tachometer or other digital tachometer to measure the actual speed of the motor, and then adjust the tachometer calibration potentiometers on the Panel to make it consistent.
2, the highest speed setting: adjust the speed adjust potentiometer in a clockwise direction on the Panel to the maximum, and then adjust the feedback regulation of the potentiometer of the Panel allow electromagnetic adjustable speed motor for the highest rated speed.

Instructions for use JD1A controller

1, before using the test process, seven core air outlet 3, core 4 step voltage of the load output is 0~90V; If you do not load the output voltage may not be within the range stated above.
2, feedback on the Panel adjust the potentiometer should be adjusted according to the motor for proper control. Feedback control is too small will make the motor is out of control; Feedback control over the motor can only be run at low speed, not speed.
3, Panel tachometer calibration potentiometers and volume control potentiometer to adjust should be locked, preventing adjustable effect speed display and motor running.
4, run, if cyclical swing at the output speed of the motor, seven-pin plug coil can be 3, 4 wire switch, the inertial coordinate to achieve more stable.

Maintenance and repair

1, the surrounding environment shall be kept clean, oil pollution prevention and water drip into the controller, and avoid shock.
2, found in parked for a long time, or controllers internal humidity, low temperature drying and checking electrical and insulation properties.
3, when replacing a component, use the soldering iron is not greater than 45W, weld time is not too long, and component repair after the cleaning with alcohol, then apply a thin layer of insulating varnishes.

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