General Vector Inverter

AS500 general vector inverter is a newly developed frequency inverter designed to satisfy market demands. It is designed based on international advanced speed sensorless vector control technology, closed loop vector control and torque control technology. The vector inverter offers not only superior control performance as high end frequency inverters, but also improved reliability and environmental adaptability, as it is designed and manufactured to satisfy customers' varied application requirements and various industrial demands.

Designed based on advanced drive technologies, the vector inverter is able to control various types of electric motors such as an induction or asynchronous motor, permanent magnetic synchronous traction motor, permanent magnetic synchronous motor, permanent magnetic synchronous servo motor, and more. Due to this, the vector inverter has wide range of applications and is extensively used for control of escalators, water pumps, printing and dyeing equipment, textile machinery, chemical and plastic processing equipment, mining equipment, and oil field equipment, etc. To illustrate, it can be used for constant tension control, plastic injection machine energy saving control, and process PID control, and more.

Also, the general vector inverter features unique structure design. It has compact structure, wide input voltage range, independent air ducts, automatic detection function when powered on, and good resistance to water, dust and impact. Additionally, the vector inverter features complete protection functions including terminal protection, over-heat alarming, whole machine protection, and high precision current detection and protection, and more functions.

Under different control modes, our vector inverter allows electric motors to have different starting torque, speed range and speed stabilization precision, etc. Details are listed below:
1. V/F control mode
Starting torque: 0.50Hz, 180% rated torque
Speed regulation range: 1:100
Speed stabilization precision: ±0.5%

2. Open loop vector control mode
Starting torque: 0.20Hz, 180% rated torque
Speed regulation range: 1:200
Speed stabilization precision: ±0.2%

3. Closed loop vector control mode
Starting torque: 0.00Hz, 200% rated torque
Speed regulation range: 1:1000
Speed stabilization precision: ±0.02%

4. Torque control mode
The vector inverter supports online switch between torque control mode and speed control mode. The torque precision is ±5%, and response time is less than 10ms.

Technical Specifications of General Vector Inverter

Input Rated voltage 380v~460v(-15%~+10%), 3-phase power supply Optional 220v~240v, 3-phase power supply
Rated frequency 50/60HZ
Allowable voltage range Voltage imbalance ≤3%; Allowable frequency fluctuation: ±5%
Voltage dips Under-voltage protection is available in 15ms, when there is 3-phase AC 380v~460v power supply, and the input voltage is less than AC300V
Output Voltage(V) Three-phase 0 to rated input voltage
Frequency range V/F control: 0.00~300.00HZ Vector control: 0.00~120hz
Overload capacity 150%, 1 minute, 180%, 3s, 200%, 0.5s
Efficiency (full load) 7.5kw and below ≧93%; 45kw and below ≧95%; 55kw and above ≧98%
Precision of output frequency ±0.01% (digital command, -10~45℃) ±0.01% (analog instruction, 25±10C)
Digital input/output Digital input 8-channel. Input function can be user-defined
Pulse frequency input 2-channel maximum input frequency: 0~50HZ
Open collector output 2- channel Output function can be user-defined
Relay output 4- channel, Normally open and close, Contact resistance: 5A 250VAC or 5A 30 VDC; output function can be user-defined
Pulse frequency output 1- channel, 0~50kHZ open collector pulse square signal output, programmable
Analog input/output Analog voltage input 2- channel, -10~+10 VDC or 0~+10 VDC, precision 0.1%
Analog current input 1- channel, 0~20mA, precision 0.1%
Analog voltage output 2- channel, -10~+10 VDC, precision 0.1%
Potentiometer voltage Provide +10 VDC power supply for setting speed of potentiometer (maximum 25mA)
Encoder input PG power supply 5v, 12v, 300mA
PG signal type Open collector, push-pull, differential, SIN/COS, resolver, endat absolute type
PG dividing frequency output OA and OB orthogonal, dividing frequency coefficient 1~128
Control characteristics Carrier frequency 2~16kHZ, carrier frequency may be adjusted automatically according to the load characteristic
Preset frequency resolution 0.01hz (digital instruction) ±0.06hz/120hz (analog instruction 11bit + unsigned)
Operation command channel Operation panel given, control terminal given, communication given
Multiple Frequency Reference Modes Operation panel, digital/analog terminals, communication mode, performance function
Torque boost Automatic torque boost; manual torque boost
V/F curve User-defined V/F curve, linear V/F curve and 5 kinds of torque-decreasing characteristic curves
Automatic voltage regulation (AVR) The duty ratio of output PWM signal is adjusted automatically according to the fluctuation of bus voltage, so as to reduce output voltage fluctuation caused by unstable power grid voltage
Instantaneous power down disposal At the time of instantaneous power down, bus voltage control is available so as to realize uninterrupted operation
Dynamic braking capacity Built-in braking unit for vector inverter of110kw and below class; Other inverters use external braking resistor
DC braking capacity Braking current: 0.0~150.0% rated current; DC braking time:0.0~30.0s
Unique functions Parameter copy function The standard operation panel can realize the parameter upload, download and display the copy progress. The user can select the upload forbidden function to avoid parameters be overwritten.
Process PID For closed-loop control of process variable
Torque control Switch between torque control and speed control can be achieved through terminals; diverse torque given methods
Zero servo and position control functions The vector inverter is able to achieve zero-speed position locking accurately
Common DC bus Multiple vector inverter can be powered by the common DC bus
Power on self test The vector inverter is able to realize the power-on auto-detection of internal and external circuits, including motor grounding, abnormal +10v power supply output, abnormal analog input, and disconnection
Motor protection Rotor locking protection
Motor overload protection
Motor overheat(PTC) protection
Speed limit protection
Torque limit protection
Vector inverter protection Output current limit Environmental condition Location Install the vector inverter vertically in a well ventilated electrical cabinet; horizontal or other installation method is not permitted. The cooling medium is air. Install the vector inverter in an environment without exposure to direct sunlight, dust, corrosive gas, inflammable gas, oil mist, steam and water drop.
Torque limit Ambient temp -10~+40℃
Drive overload Temperature derating >40℃, for each 1℃ rise, rated output current reduces 1%, 50℃ at utmost
IGBT's overload Altitude 1000m
Input power undervoltage /overvoltage Height derating >1000m, for each 100m increase in altitude, rated output current reduces 1%(3000m at utmost)
DC bus undervoltage/overvoltage Ambient humidity 5~95%,no condensation
IGBT overheat Vibration 3.5m/S2, 2~9HZ; 10m/s2, 9~120HZ
Radiator overheat Storage temp. -40~+70%
Power failure Degree of protection IP20
+10v power output abnormity
Analog input signal loss (loss of speed reference value)
Abnormal communication
Others Cooling type Forced air cooling
Installation method In cabinet
certification CE
Rated input Drive model Rated output current(A) Applicable motor(kw) Overload 120%1min(A)
200~240V AS500 2T01P5 6 1.5 9
AS500 2T02P2 9 2.2 14
AS500 2T03P7 14 3.7 22
380~460V AS500 4T02P2 6 2.2 9
AS500 4T0003 7 3 11
AS500 4T0004 9 4 14
AS500 4T05P5 13 5.5 20
AS500 4T07P5 18 7.5 27
AS500 4T0011 27 11 40
AS500 4T0015 34 15 51
AS160 4T18P5 41 18.5 62
AS160 4T0022 48 22 72
AS160 4T0030 65 30 98
AS160 4T0037 80 37 120
AS160 4T0045 97 45 146
AS160 4T0055 128 55 192
AS160 4T0075 165 75 248
AS160 4T0090 195 90 292
AS160 4T0110 240 110 360
AS160 4T0132 270 132 405
AS160 4T0160 302 160 453
AS160 4T0185 352 185 528
AS160 4T0200 390 200 585
AS160 4T0220 426 220 639
AS160 4T0280 520 280 780
AS160 4T0315 585 315 877
AS160 4T0335 650 355 975
AS160 4T0400 740 400 1110

Note: As for vector inverters for 4-pole AC motor (1500r/min) with higher power and voltage class, please contact STEP Corporation. Be sure to check the motor nameplate to make sure selected vector inverter is compatible with the motor.

We are a professional general vector inverter manufacturer in China. At STEP we provide a variety of products including elevator inverter, integrated full serial VVVF control cabinet, calling board, elevator group control system, among others.

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Inquiry Form

Add.: No.599, Meiyu Road, Jiading District, Shanghai, 201802, China.
Fax: +86-21-31010649
Tel.: +86-21-31010610