Features: 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. It has function of speed governing, on/off, CW/CCW rotation, locked-rotor alarm output, over-current protection, short circuit protection and status indication. The speed controller can control motor with sorts of motion control cards, PLC, and also it can control motor independently. It can be set to control different models brushed DC motors of voltage 20V-110v, and power less than 2000W. It can be used individually through external switch and knob; can also be used with PLC, motion control card, industrial personal computer. 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. Designed with ON/OFF connector, CW/CCW rotation connector and protection output connector. 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. It has power indicator light, green light for power indicator, red light is alarm indicator. This driver can also be used to drive boiler heat wire, vibration plate, electromagnetic machine, suitable for non-capacitive loads within 2kW. Instruction: 1, High Voltage Connector: M-:motor- M+: Motor+(Limit load is 2kW, nominal load is 1.5kW, if need change rotate direction, exchange two wires) NC: empty ACIN: Power input (no need to distinguish "+" or "-") Power Input:AC15V-110V(50/60Hz), DC20V-150V 2, Analog Input: 5V:Power supply 5V output pin. AIN / VR:Analog input.This connector can connect to three kinds of signal for speed governing. When using 0-5V/0-10V voltage speed governing or 4-20mA current signal to speed governing, need to set 4-digit DIP switch. 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 2) :Input 0-5V or 0-10V voltage signal for speed governing.AIN/VR connects to voltage signal, GND connects to ground. At the same time 4-digit DIP switch is set as "0~5V - PWM"(SW1 - ON, SW2 - OFF, SW3-OFF, SW4-ON SW3-OFF; SW4-ON; No resistor is needed for 0-5V voltage signal input, directly connect to AIN/VR &GND Two resistors should be added for 0-10V voltage signal input as wiring in the diagram below: 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 GND: common ground (hot ground, do not touch when power on) 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. 5V:Power supply 5V output pin. 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. 3, Digital Control Connector (isolation) : Outside PWM: External PWM signal input for speed governing PWM Duty Cycle Range:0-100% PWM Frequency Range:800Hz-30kHz, recommend using 16kHz, low level effective. 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 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. 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. 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. NPN-C: Alarm signal output NPN transistor.When alarming, the transistor is conducted.Maximum Current: 15mA Voltage Range: