Product Name: Inverter Model NO.: B503D Communication: RS 485 Control Mode: Sensorless Vector, V/F, Torque Control Start Torque: 0.5Hz/150%(SVC) Multi-Step(16-Steps): Fwd, Revcontrol Power Range: 0.75~630kw Trademark: BEDFORD Transport Package: Wooden Case Specification: 0.75~55kw Origin: Guangzhou Product Description Variable Frequency DriveProduct Brief:B503 series inverter adopts DSP control system which supplies sensorless vector control(SVC) and V/F control. Comparing with V/F control, the performance of SDP has greater superiority, which consists of Built-in SVC and V/F control, it is widely aplied to high speed contro l accuracy, rapid torque response and high performance at low frequency.Main Features:* Control mode: Sensorless vector control, V/F control, Torque control* Start-up torque: 0.5Hz/150%(SVC)* Built-in breaking unit for 0.4kw to 11kw. If need to stop rapidly, please connect the brake resistance directly.. Mult-step(8 steps)speed control: PID control, Traverse control* Offer 4 multi-functional digital inputs, 2 analog inputs, 1 relay output, 1 analog output, 1 open-collector output.* AVR: Can output constant voltage automatically when input voltage is fluctuating.* Offer RS485 communication interface.* Standard Modbus.Applications:B503D series(Output frequency range is 0~400Hz)Textile machinery, Plastic machinery, Light industry, Pharmacy machinery, Fan, Water Pump, Air compressor, etc.Power range:Single phase 220V 0.7HP~3HP(0.4KW~2.2KW)Three phase 220V 1HP~75HP(0.75KW~55KW)Three phase 380V 1HP~860HP(0.75KW~630KW)IntroductionTechnology Features* Input & OutputInput Voltage Range: 380/220V± 15%Input Frequency Range: 47~63HzOutput Voltage Range: 0 ~ rated input voltageOutput Frequency Range: 0 ~ 600Hz* I/O features* Programmable Digital Input: Provide 4 terminals which can accept ON-OFF inputs* Programmable Analog Input: AI1 can accept input of 0~10V or 0/4~20mA.* Programmable Open Collector Output: Provide 1 output terminal(open collector output or high-speed pulse output)* Relay Output: Provide 1 output terminal* Analog Output: Provide 1 analog output terminal, whose output scope can be 0/4~20mA or 0~10V, as chosen.*Main Control Function* Control Mode: Sensorless Vector Control(SVC), V/F Control* Overload Capacity:60s with 150% of rated current, 10s with 180% of rated current* Starting Torque: 150% of rated torque at 0.5Hz(SVC)* Speed Adjusting Range: 1: 100(SVC)* Speed Accuracy: ± 0.5% of maximum speed(SVC)* Carrier Frequency: 0.5Hz~15.0Hz* Reference Frequency Source: Keypad, analog input, serial communication, multi-step speed, PID and so on. The combination of multi-modes and switching between different modes can be realized* Torque Control Function: Provide multiple torque setting source* PID control function* Multi-Step Speed Control Function: 8steps speed can be set* Traverse Control Function* Non-stop when power is instantaneously cut off* Speed trace function: Start the running motor smoothly* QUICK/JOG key: User defined shortcut key can be realized* Automatic Voltage Regulation(AVR) Function:Automatically keep the output voltage stable when input voltage fluctuating* Up to 25 fault protection:Protection from over current, over voltage, under voltage, over heat, phase failure and overload etc.