Features: _x000D_WS55-220 is a high performance,cost-effective 3 phase BLDC motor controller.Voltage range is from 20VDC to 50VDC. _x000D_The controller can drive the DLDC motor with HALL or without HALL. _x000D_The driver is based on advanced technology and be provided with high speed, high torque, low noise, low vibration, over current protection, overload protection, less phase line. protection, phase line short protection, alarm output, speed signal output, positive negative rotation control etc. _x000D_This controller can be used in small equipment, Electric Power Tools, exhaust Fan, Jade grinding machine, Vibrating motor etc. _x000D_External potentiometer control/external voltage control. _x000D_With overvoltage protection, over-current protection, locked-rotor protection. _x000D__x000D__x000D_Specifications: _x000D_Rated voltage: 20 to 50 VDC_x000D_Rated current: 12A_x000D_Current limiting: 15A _x000D_Maximum speed: 20000RPM( the specific speed depends on the motor itself and load) _x000D_Storage temperature: -20~+65_x000D_Usage environment: Avoid direct contact with dust, fumes and corrosive gases_x000D_Temperature: 0-45_x000D_Humidity: < 80%, no frost, frost free_x000D_Shock: 5.9m/S2 Maximum_x000D_Storage humidity: 0~95%RH_x000D_Size: Approx. 9.5 x 6 x 3.5cm / 3.74 x 2.36 x 1.38inch_x000D_Weight: 258g _x000D__x000D__x000D_Detail:_x000D__x000D_1.Two modes of speed regulation:_x000D_External potentiometer: through this potentiometer speed regulation;_x000D_External voltage: external 10VDC voltage speed regulation;_x000D_Note: The two speed regulation can not be used simultaneously _x000D_2. Speed output PG signal: There is a 5v-revolution pulse output between the port and the ground._x000D_The output frequency is set to P (Hz), the motor class logarithm is N, and the speed is F (RPM), then the output speed frequency is P=F*N/60._x000D_3. Alarm output ALM signal:There is an 5V alarm pulse output between the port and the ground._x000D_4. Positive inversion function: _x000D_F/R:Fiddle the toggle switch on the corresponding side, the motor steering direction can be changed. For the toggle switch, the white part is up and down, then twang it up and down. For the toggle switch, the white part is horizontal, and the twang horizontally._x000D_5. Start-stop (two control modes):_x000D_1. External switch EN: Transfer through switch._x000D_2. Side toggle switch EN: for the toggle switch, the white part is up and down, then down for the start; for the toggle switch, the white part is horizontal, then dial to start_x000D_Note: You can only turn one control at the same time, one of the switches is closed, and the other one is valid. _x000D_6. Locked-rotor protection:If the motor stops working, switch on the power again to start._x000D_7. Power light: Green light: power on and off_x000D_8. Status light: Red light: two flashes in standby time, after starting, extinguish. _x000D_9. Insulation resistance: >100M at ambient temperature and atmospheric pressure_x000D_10. Insulation strength: At normal temperature and pressure, 0.5KV, 1 minutes _x000D__x000D__x000D_Package included: _x000D_1 x Motor Driver Controller with cable_x000D__x000D__x000D__x000D_Note:_x000D_Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1WS55-220 is a high performance,cost-effective 3 phase BLDC motor controller.Voltage range is from 20VDC to 50VDC 2The controller can drive the DLDC motor with HALL or without HALL 3The driver is based on advanced technology and be provided with high speed, high torque, low noise, low vibration, over current protection, overload protection, less phase line. protection, phase line short protection, alarm output, speed signal output, 4This controller can be used in small equipment, Electric Power Tools, exhaust Fan, Jade grinding machine, Vibrating motor etc 5External potentiometer control/external voltage control