Features: _x000D_ This PWM DC motor speed controller (model DM103AH) is mainly used to drive a brushed DC motor, designed for motion control cards or PLC controlling DC motor. _x000D_ _x000D_ It has function of speed governing, on/off, CW/CCW rotation, locked-rotor alarm output, over-current protection, short circuit protection and status indication. _x000D_ The speed controller can control motor with sorts of motion control cards, PLC, and also it can control motor independently. _x000D_ _x000D_ It can be set to control different models brushed DC motors of voltage 20V-110v, and power less than 2000W. _x000D_ It can be used individually through external switch and knob; can also be used with PLC, motion control card, industrial personal computer. _x000D_ With complete function connector, it can connect to external 0 to 5v, 0-10v, 4-20mA, PWM signal and external potentiometer manually, a total of 5 kinds of speed governing control ways. _x000D_ Designed with ON/OFF connector, CW/CCW rotation connector and protection output connector. _x000D_ Support AC or DC input, there is no worry about burn-out by reverse input.Wide power supply range from AC15V to 110V (50/60Hz), DC 20V to 150V. _x000D_ It has power indicator light, green light for power indicator, red light is alarm indicator. _x000D_ This driver can also be used to drive boiler heat wire, vibration plate, electromagnetic machine, suitable for non-capacitive loads within 2kW. _x000D_ _x000D_ _x000D_ Instruction: _x000D_ 1, High Voltage Connector:_x000D_ M-:motor-_x000D_ M+: Motor+(Limit load is 2kW, nominal load is 1.5kW, if need change rotate direction, exchange two wires)_x000D_ NC: empty _x000D_ ACIN: Power input (no need to distinguish "+" or "-")_x000D_ Power Input:AC15V-110V(50/60Hz), DC20V-150V_x000D_ _x000D_ 2, Analog Input:_x000D_ 5V:Power supply 5V output pin._x000D_ AIN / VR:Analog input.This connector can connect to three kinds of signal for speed governing._x000D_ When using 0-5V/0-10V voltage speed governing or 4-20mA current signal to speed governing, need to set 4-digit DIP switch._x000D_ _x000D_ 1)Potentiometer Speed Governing:5V, AIN/VR, GND connect respectively to three pins of a 10kR potentiometer to manually control speed; At the same time, the 4-digit DIP switch is set as "0~5V - PWM"(SW1 - ON, SW2 - OFF, SW3-OFF, SW4-ON) SW3-OFF; SW4-ON_x000D_ 2) :Input 0-5V or 0-10V voltage signal for speed governing.AIN/VR connects to voltage signal, GND connects to ground._x000D_ At the same time 4-digit DIP switch is set as "0~5V - PWM"(SW1 - ON, SW2 - OFF, SW3-OFF, SW4-ON_x000D_ SW3-OFF; SW4-ON;_x000D_ No resistor is needed for 0-5V voltage signal input, directly connect to AIN/VR &GND_x000D_ Two resistors should be added for 0-10V voltage signal input as wiring in the diagram below:_x000D_ _x000D_ 3)Input 4-20mA signal for speed governing.AIN/VR connects to current signal, GND connects to ground.At the same time, 4-digit DIP switch is set as "4-20MA - PWM" (SW1-OFF, SW2-ON, SW3-OFF, SW4-ON) SW3-OFF; SW4-ON_x000D_ GND: common ground (hot ground, do not touch when power on)_x000D_ ON/OFF: Motor ON/OFFit can connect to an external switch.When not connected to GND, motor is on; when connected to GND, motor is off.The external ON/OFF switch connect respectively to ON/OFF and GND._x000D_ 5V:Power supply 5V output pin._x000D_ CW/CCW: motor CW/CCW control connector.Recommended minimum control interval is 1.5 seconds to protect motor brush.External CW/CCW switch connect respectively to CW/CCW and 5V connector. _x000D_ _x000D_ _x000D_ 3, Digital Control Connector (isolation) :_x000D_ _x000D_ Outside PWM: External PWM signal input for speed governing_x000D_ PWM Duty Cycle Range:0-100%_x000D_ PWM Frequency Range:800Hz-30kHz, recommend using 16kHz, low level effective._x000D_ Using External PWM Signals for Speed Governing:4-digit DIP switch is set as "0~5V - PWM"(SW1 - ON, SW2 - OFF, SW3-OFF, SW4-ON SW3-ON SW4-OFF_x000D_ DIR: Motor direction control connector.Low level effectiveRecommended minimum control interval is 1.5 seconds to protect motor brush.When using external PWM signal input, you can also use an on-off switch to control CW/CCW; 2 wires of switch connect respectively to DIR and COM+5V._x000D_ EN:Motor enable control pin.When this pin is connected to low level, motor does not run.Low level effective.When not connected or connected to high level, motor runs.When using external PWM signal input, you can use an on-off switch to control on/off; 2 wires of switch connect respectively to EN and COM+5V._x000D_ COM+5V: Common wire for above three control signal.If connected to PLC24V level control, the pin should be connect to a 1.5K-3K resistor in series._x000D_ NPN-C: Alarm signal output NPN transistor.When alarming, the transistor is conducted.Maximum Current: 15mA Voltage Range: