EM-115
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EM-115 DC-MOTOR CONTROL UNIT 12-36V 25A 4-QUAD. FEATURES: • Small size • Four quadrant drive • High efficiency >92% • Motor range 50-500W • Rail mounting base fittable • Adjustable current limit • Adjustable ramp EM-115 motor control unit is designed for big permanent magnet DC-motors. The power control is done with PWM method (Pulse Width Modulation). This facilitates high efficiency and small temperature losses. Thanks to a high switching frequency the unit operates quietly. A battery or a filtered DC-supply will do as a power source. The maximum output given by the unit depends on the installation. When operating at maximum power output sufficient air ventilation has to be taken care of. The unit operates in 4-quadrants so it drives and brakes in both directions. The braking is done with regenerative way feeding braking energy back to power supply. When a battery is not used as a power source the braking energy will be fed to the internal resistance of the motor. The motor rpm can be set either with potentiometer, trim or external voltage signal. The output acceleration ramp and current limit are set with trims, the current limit is indicated with a red LED. A load affecting the motor rpm can be eliminated with a compensation trim. The power stage is protected against voltage peaks, overload and temporary shortcuts. Even the incorrect polarity does not damage the unit as long as a fuse of recommended value is used. TECHNICAL DATA: Supply voltage Idle current Recommended fuse Control potentiometer Load capacity Motor voltage Control voltage range Voltage loss /V Current limit Operating frequency Ramp time On / Off control Input impedance Efficiency Operating temp. Dimensions Weight pole change

EM-115 OPERATING AND CONNECTING INSTRUCTIONS SUPPLY 12-36V DC Check polarity before connecting! Use filtered 12-36VDC (ripple <20%) as operating voltage. When motor current constantly exceeds 20A, proper air ventilation must be taken care of. Ambient temperature should not be over 50°C. P5 comp. P1-maximum level. Use to set maximum level. This is also the speed set for speed-1 in 2-step speed mode. P2-speed-2 When using 2-step speed mode use P2 to set speed-2. P3-acceleration / braking ramp Use ramp adj. to obtain smooth starting and running. The right value can be found just by testing the...