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SB70G High-Performance Vector Control Inverter

SB70G is a new-generation inverter developed independently by the SenLan Science & Technology Holding Corp.,Ltd., featuring low noise, hight performance and multiple functions. It adopts the rotor field-oriented vector control strategy to realize high-accuracy, wide-range speed and torque control of the motor. SB70G is extensively applicable to equipment in various industries, such as drawbenches, mixers, extruders, winding machines, compressors, fans, pumps, grinding machines, belt conveyors, hoists and centrifuges.

复件 SB70高性能矢量控制变频器.jpg

Common specifications for SB70G series

Item

Description

Input

Rated voltage and frequency

1 phase: 220v; 3-phase: 220v/380V/690V50/60Hz

Allowable range

Voltage: 320420V; voltage imbalance3; frequency:4763 Hz

output

Output voltage

3-phase, 0Vinput voltage, with the error less than   5%.

Output frequency range

V/F control: 0.00650.00Hz

Vector control: 0.00200.00Hz

Basic   specifications

Motor control mode

V/F control   without PG, V/F control with PG, vector control without PG, vector control   with PG, V/F separate control

Steady-state speed precision

Vector control   without PG: ≤1

Vector control   with PG: ≤0.02

Starting torque

Not less than   150% of rated torque at 0.50Hz

Overload capacity

150 of rated current for 1 minute

Frequency resolution

Digital reference:   0.01Hz  Analog reference: 0.1 of max. frequency

Output frequency precision

Analog reference:   :±0.2 of max.   frequency25±10

Digital reference:   0.01Hz(-1040℃

Command source

Keypad, terminal   and communication. They can be switched over by terminals

Frequency reference source

Keypad,   communication, UP/DOWN value, AI1, AI2, PFI and arithmetic unit

Auxiliary frequency reference

Achieves flexible   frequency setting

Torque boost

Auto or manual   torque boost

V/F curve

User defined V/F,   linear V/F and 5 reduced-torque curves

Accel/decel

Linear or S-curve   acceleration/deceleartion

Jog

Jog freuqnecy: 0.1050.00Hz

Jog accel/decel time:   0.160.0s

Auto energy saving

V/F curve is   optimized automatically based on the load condition, achieving auto   energy-saving run

AVR

Keeps the output   voltage constant automatically when the voltage of power grid fluctuates

Auto carrier regulation

Carrier frequency   is regulated automatically based on the load characteristic and ambient   temperature

Random PWM

Regulates the   tone of the motor noise

Droop control

Applicable to   cases where multiple inverters drive the same load

Momentary power failure

Ensures   uninterrupted operation by controlling the DC link voltage

Dynamic braking

Built-in braking   unit and external braking resistor for models of 15kW or less

DC braking

Braking time: 0.060.0s   

Braking current:   0.0100.0 of rated current

PFI

Highest input   frequency: 50kHz

PFO

Open-collector   pulse(square wave) output of 050kHz, programmable

Analog input

2 channels of   analog input, voltage or current type, positive or negative

Analog output

2 channels of   analog output, 0/420mA or 0/210V, programmable

Digital input

8 channels of optional   multi-function digital input(leakage/source type)

Digital output

2 channels of optional multi-function   digital output(leakage/source type); 2 channels of multi-function relay   output

Communication

Bulti-in RS485   port, supporting Modbus protocol and USS commands

Characteristic functions

Process PID

Two sets of PID   parameters; multiple correction modes; free PID function

Multiple PLC modes

User can set 8   PLC run modes, with each having up to 48 stages. The mode can be selected by   terminals. PLC status can be saved at power failure.

Multi-speed select mode

4 selection   modes. Refer to F4-17

User defined menu

30 user   parameters can be defined

Parameter display change

Can display   parameters different from the default ones

Toreque control

Torque/speed   control can be switched by terminals. Multiple torque setting modes.

Zero-servo

Zero-speed   position can be locked

High-speed UP/DOWN counter

Synchronous   control, counting in production, stop contol by count and precise position   control can be realized

High-speed meter counter

Stop control by   length and length indication can be achieved

Wobble

Ensures even   winding of textiles

Programmable unit

Comparator, logic   unit, trigger, arithmetic unit, filter, multiple-way switch, timer

kWh meter timer

For adjustment of   optimal energy saving strategy

Protection functions

Overcurrent, overvoltage, undervoltage, input/output   phase loss, output short-circuit, overheating, motor overload, external   fault, analog input disconnection, stall prevention, etc.

Options

Braking unit, remote control box, digital I/O   expansion board, encoder interface board, analog input expansion board,   keypad with copying function or potentiometer, keypad mounting box, keypad   extension line,I/O reactor, EMI filter, Profibus-DP module, etc.

Ambient

Service site

Altitude less than 1000   meters; indoor; no direct sunlight; free of dust,corrosive gases, inflammable   gases, oil mist, water vapor, water drops, salt mist, etc.

Temperature/humid

-1040℃/2090RH, no   condensation

Storage temperature

-2060℃

Vibration

Less than 5.9m/s20.6g

Structure

Protection degree

IP20

Cooling method

Forced air   cooling, with fan control