VB3/V5/VB5 series inverter 
9 
 
Main Control   
Function 
Frequency resolution  Digital Setting: 0.01Hz; Analog Setting: max frequency × 0.1% 
Start frequency  0.40Hz ~ 20.00Hz 
Torque boost  Auto torque boost, manual torque boost 0.1% ~ 30.0% 
V/F curve 
Five modes: constant torque V/F curve, 1 V/F curve mode by user and 3 kinds of 
torque-derating modes (2nd power, 1.7th power, 1.2nd power)   
Accelerate/Decelerate curve 
Two  modes:  linear  Acc/Dec,  S  curve  Acc/Dec;  seven  kinds  of  Acc/Dec  time, 
Maximum: 6000 minutes, the time unit (minute or second) is selectable 
DC brake 
Initial frequency of DC braking: 0~15.00Hz 
Braking time: 0~60.0 s             
Braking current: 0~80% 
Power consumption brake  Built-in brake unit, can connect external brake resistor 
Jog  Range of jog frequendy: 0.1Hz~50.00Hz, Acc/Dec time of jog 0.1~60.0s 
Built-in PI  Easy to form close loop control system 
Multi-step speed running  Multi-step speed work through built-in PLC or control terminals 
Textile wobble frequency  Adjustable preset frequency and center frequency 
Auto voltage regulation 
(AVR) 
When the power system voltage changes, maintain the constant of output voltage 
Auto energy saving running 
Auto-optimize V/F curve according to the load condition to realize energy saving 
operation 
Auto current limit  Auto-limit running current to avoid trip caused by overcurrent 
Fix-length control  The frequency inverter will stop running when reaching the fixed length 
Communication 
function 
With  RS485  port,  support  Modbus-RTU  protocol.  Be  with  master-slave  mul-
ti-device linkage function   
 
 
 
Operate function 
Command channel 
Operation panel setting;control terminals setting;serial port setting; three modes 
are exchangeable 
Frequency channel 
Keyboard  analog  potentiometer  setting;  ,   keys  setting;function  code 
digital setting; serial  port setting;UP/DOWN terminal  setting;analog voltage 
setting;analog current setting; pulse setting;combination setting; different setting 
modes can be switched 
Digital input channel 
Forward/Reverse running command;6 channels programmable digital input,can 
set 35 kinds of function,X6 support 0~20KHz pulse input 
Analog input channel  2 channels analog input , 4~20mA and 0~10V can be selected 
Analog output channel 
1  channel  analog  output:  0~10V/4~20mA,  can  output setting  frequency,  output 
frequency 
Digital/pulse output channel 
1 channel programmable open-collector output; 1 channel relay output; 1 channel 
0~20KHz pulse output 
Operation panel 
LED Display  Can display setting frequency, output voltage, output current and other parameters 
External meter Display 
Display output frequency, output current, output voltage and other physical quan-
tities 
Button Lock 
Lock all the buttons 
Protection Function 
Over current protection;over voltage protection;under voltage protection;over 
heat protection;over load protection 
Optional parts 
Brake parts, operation panel, extension cable of operation panel 
 
1-3. Product appearance 
VB3 series 0.4~0.75KW