EM-12ADC motor controller
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EM-12A PWM DC-MOTOR CONTROL UNIT 24V 8A 200W FEATURES: • Continuous power regulation and controlled direction change • Adjustable current limit, acceleration ramp and max. power limit • Load short circuit protected • CB-mode for increased starting torque • High efficiency, small size • Controllable with potentiometer, switch or voltage signal • Rail mounting base available EM-12A DC-motor control unit is designed for use in industry and automation applications in power range of 0...200 W. With EM-12A DC-motor can be controlled easily and economically. EM-12A includes many adjustments and various connection choices. Inbuilt protection features increase the reliability of use. CB-function (current boost) eliminates motor rushing if started with load. EM-12A can be controlled continuously with one potentiometer forward/stop/reverse or the control can be divided to switch and potentiometer or just for switch. EM-12A can be controlled with ±10 V signal as well. TECHNICAL DATA: 28mm 57mm 52mm Adjustments: Acceleration ramp (0...100%) 0.5 ... 5 s Current limit 0.5 ... 20 A Max. power limit 0 ... 100 % 87mm 77mm F2 72mm 62mm F1 P1 LED, CURRENT LIMIT P2 Operating voltage 18...30 Vdc Idle current 50mA Load capacity 8A (RMS) mom. 15A (5s) Operating frequency approx. 22 kHz Control pot.meter 10k or 25k 0.25W lin. Recommended fuses (F1,F2) max. 8A, slow Operating temp. 0...50 °C Dimensions 87*72*28 mm P3 1 2 3 4 FUSES (8A, SLOW) F1, SUPPLY F2, MOTOR 5 6 7 8 9 ADJUSTMENTS P1, CURRENT LIMIT P2, ACCELERATION RAMP P3, MAX. POWER LIMIT

EM-12A INSTRUCTIONS CONNECTIONS Connection choices are displayed in figures 2a, 2b, 2c and 2d. If the operating direction of the connected potentiometer is not as desired, the outer wires should be switched. If the rotating direction of the motor is not as wanted, the motor wires should be switched. CAUTION. When the card is supplied from a transformer, capacitor should be added as shown in figures. With battery supply the capacitor is needed only if supply leads are extensive (over 5m). _______ INTRODUCTION Adjust the max. power limit to 100 % (P3 clockwise), acceleration ramp to 5 s...