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B503 series inverter adopts DSP control system which supplies sensorless vector control(SVC) and V/F control. - details see: https://www.machineto.com/b503-vecter-control-bedford-vfd-manufacturers-10233759

Product 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.

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)

Main Features:

I/O Features

Input Voltage Range: 380/220V±15%

Input Frequency Range: 47~63Hz

Output Voltage Range: 0~ Rated Input Voltage

Output Frequency Range: 0~400Hz

Peripheral Interface Features

Programmable Digital Input: 4 terminals ON-OFF input

Programmable Analog Inut: AI 1 0~10V AI 2 0~10V or 0~20mA

Programmable Open Collector Output: 1 terminal output(open collector or high speed pulse)

Analogt Output: 1 ternimal output, optional of 0/4~20mA or 0~10V

Technical Features

Control Method: Non-PG Vecter Control(SVC) ,V/F Control ,Torque Control

Overload Capacity: 60s with 150% of rated current,10s with 180% rated current.

Starting Torque: 150% of rated torque at 0.5Hz(SVC)

Speed Adjusting Range: 1:100(SVC)

Speed Accuracy: ±0.5% of max. speed(SVC)

Carrier Frequency: 0.5kHz~15kHz

Function Features

Frequency Setting Source: Keypad, analog input, serial communication,multi-step speed, PID .

Multi-Step Speed Control Function: 8 Steps speed

Traverse Control Function

Instant Power-off Proection

Speed Trace Function: Softstart the running motor smoothly without impact.

QUICK/JOG Key:User define shortkey

Automatic Voltage Regulation(AVR) Function

Up to 25 Fault Protection: Over Current,Over Voltage,Under Voltage, Overheat, Phase Failure,Overload

Applications:
B503 series(Output frequency range is 0~400Hz)
Textile machinery, Plastic machinery, Light industry, Pharmacy machinery, Fan, Water Pump, Air compressor, etc.