2022 Cheapest multi-function 0.4-315kw variable frequency inverter / frequency converters 380v

Rated Voltage,

Frequency

Allowed Voltage

Range

G type: 110% for long-term, 150% for 1 min, 180% for 5s

P type: 105% for long-term, 120% for 1 min, 150% for 1s

V/F control, advanced V/F control, V/F separation control, electric

current vector control

C

O

N

T

R

O

L

C

H

A

R

A

C

T

E

R

Frequency Setting

Resolution

Within 0.2% of maximum output

frequency

V/F Curve (voltage

frequency character)

Reference frequency setting 5~600 Hz,

multipoint V/F curve setting, or fixed

curve of constant torque, low decreasing

torque 1, low decreasing torque 2, square

torque

Torque

Compensation

Manual setting: 0.0~30% of rated output

Automatic compensation: according to

output current and motor parameter

Automatic

Current-limiting and

Voltage-limiting

During acceleration, deceleration or steady

running, detect automatically the current

and voltage of motor stator, and control it

within bounds based on unique algorithm,

minimize fault-trip chance

Senseless Vector

Control

Voltage Frequency

Character

Adjust pressure/frequency ratio according

to motor parameter and unique algorithm

Starting torque:

3.0 Hz 150% rated torque (VF control)

0.5 Hz 180% rated torque (SVC, FVC)

0.05 Hz 180% rated torque (VC)

Operating speed precision in steady state:

≤±0.5% rated synchronous speed

Torque response: ≤50ms VC, SVC, FV

≤20ms

Motor Parameter

Self-measurement

Being able to detect parameter

automatically under static state and

dynamic state of motor, thus guarantee an

optimum control.

Current and Voltage

Restrain

Current closed-loop control, free from

current impact, perfect restrain function of

overcurrent and overvoltage

Low Voltage Restrain

during Running

Specially for users with a low or unsteady voltage power grid: even

lower than the allowable voltage range, the system can maintain

the longest possible operating time based on its unique algorithm

and residual energy allocation strategy

T

Y

P

I

C

A

L

F

U

N

C

T

I

O

N

Multi-velocity and

Swing Frequency

Operation

16 segments programmable multi-velocity control, multiple

operation mode. Swing frequency operation: preset frequency and

center frequency adjustable, parameter memory and recovery after

power cut.

Built-in PID controller (able to preset frequency). Standard

configuration RS485 communication function, multiple

communication protocol for choice, synchronizing control

function.

RS485

Communication

Direct voltage 0~10V, direct current

0~20mA (optional up limit and lower

limit)

Operation panel setting, RS485 port

setting, UP/DW terminal control, or

combined with analog input

2 channel OC output and one channel relay

output (TA, TB, TC), up to 16 choices

2 channel analog signal output, output

ranging within 0~20mA or 0~10V with

flexibly setting, achievable output of

physical quantities like set frequency,

output frequency

Automatic

Steady-voltage

Operation

Dynamic steady state, static steady state, and unsteady voltage for

choices to obtain the steadiest operation

Acceleration and

Deceleration Time

Setting

0.1s~3600min continuous setting, S type and linear type mode for

choice

Dynamic

Braking

Dynamic braking initial voltage, backlash voltage and dynamic

braking continuous adjustable

Halt DC braking initial frequency: 0.00~[P0.16] upper limit

frequency

Braking time: 0.0~100.0s;

Braking current: 0.0%~150.0% of rated current

Flux

Restraint

Carrier frequency 1.0kHz~16.0kHz continuous adjustable,

minimize motor noise

Speed Tracking and

Restart Function

Upper limit and lower limit frequency setting, frequency hopping

operation, reversal running restraint, slip frequency compensation,

RS485 communication, frequency control of progressive increase

and decrease, failure recovery automatically, etc