Incorporates, simultaneously with European air compressors,sensor-less flux vector invertor controler, perfectly matched by the function of dedicated microprocessor control system, featuring stable and safe, regulates to enhance energy saving efficiency, as well as reflects user's air consumption; capable of controling output pressure within 0.1 Bar.
Starting by inverter reduces starting current, increasing
power factor with energy saving 44 - 55% more than normal
Linear inverter controlable output load, minimum at 20%
Multple of voltages 208 - 690V AC 3Ø available to users
Avoids transient current fluctuation caused by switches of
Y-△ start or direct stsrt.
Stable rotation with speed varied by inverter, preventing
frequent start of motor with instantaneous transmitting torque
which affects service life of bearing.
Multiple optional communiction interface provides
outstanding and flexible capability of communiction.
Stores up to 30 defect histories, each contains 13 different
transport data and 3 defect indications.
Highly EMI resistant.
Completely digitized design, storing operation conditions,
parameter settings and defect records in NVRAM and
EEPROM free from memory loss due to loss of power.
Inverter-controled operation efficiently supplies air in timely and manners and in appropriate volume, which makes automatical adjustment possible to optimize air volume, also adjustment of power consumption to satisfy the aim of energy saving.
The average air compressors are controled by pressure differential method, set at 1 to 2 bars. Too small a pressure difference leads to frequent no-load/load of air compressor which is likely to cause parts wear and failures, while too big a pressure difference leads to prolonged no-load wear-out. Raising pressure setting by 1 bar means an average 7% increase of energy consumption. Frequency-variable control can set the pressue within ±0.1 bar to lower motor RPM and power rate, saving energy consumptoin due to excessive high pressure.
The inrush currents on motors are generally up to six times as much. As high currents tend to affect the service life
of motors and electric-magnetic contactors, frequent starts of motor over short period of time should be avoided.
Frequency-variable control can overcome high inrush currents. It also offers no limit to the number of times of
starting,so allows stopping opertion in time, to save energy consumption, and solves the no-load opertion designed
on fixed-frequency models to protect motors.
Optional for retrofit to traditional air compressors, WIC
receives air compressor's output signal and modifies local
circuit control, transforming a traditional air compressor into
a vector type air compressor with inverter.
IP21/IP54 specification complying; voltages at
208V / 690V AC, 160KW / 1500KW。
Anti-noise and transmission, both low frequency harmonic
interference and high frequency EMI interference resistant,
EMC standards conforming.
Output filter, arc protection or insulation detection of heat
build-up protection can be added.
State-of-the-art motor control
Vector control able to achieve the dynamic precision of motor control:
Error of speed in steady state: ＜0.5%
Torque rising time: ＜10ms
Low output torque ripple, motor resonance
High starting torque at 200%, peak output
frequency at 7200Hz.