Elevator Dedicated Frequency Converter

Product Detail

AS320 elevator inverter is a kind of newly developed frequency inverter especially for elevators. It is designed with 32-bit MPU for motor driving, high performance complex programmable logic device (CPLD), and advanced power module. Meanwhile, the elevator inverter is designed based on international advanced closed loop vector control technology and supports various control modes including V/F control, sensorless vector control, and torque control modes. Integrating the characteristics of potential energy load, the elevator inverter allows elevators to operate efficiently, smoothly and steadily, and offers passengers a comfortable feeling. 




The elevator inverter is designed based on innovative load-sensorless start compensation technology, which helps ensure comfortable feeling at the starting moment without installation of a weight measuring device. Meanwhile, incremental ABZ encoder is utilized to achieve control of the synchronous motor. In addition, new type PWM inverter dead time compensation method and dynamic PWM carrier modulation technology help effectively reduce the noise and losses in electric motors. By making improvement on inverter hardware, our elevator inverters offer a maximum junction temperature of 175? and low switch loss. 




Main Features

1. Closed loop vector control technology ensures high performance.

2. Zero-speed torque compensation without load weighing device helps to save cost.

3. New PWM dead-zone compensation technology of the elevator inverter results in less energy loss.

4. Dynamic PWM carrier modulation technology for less motor noise.




Model	Rated capacity (kVA)	Rated output current (kA)	Applicable motor power (kW)
2S01P1	2.3	6.0	1.1
2S02P2	4.6	12	2.2
2S03P7	6.9	18	3.7
4T02P2	4.7	6.2	2.2
4T03P7	6.9	9	3.7
4T05P5	8.5	13	5.5
4T07P5	14	18	7.5
4T0011	18	27	11
4T0015	24	34	15
4T18P5	29	41	18.5
4T0022	34	48	22
4T0030	50	65	30
4T0037	61	80	37
4T0045	74	97	45
4T0055	98	128	55
4T0075	130	165	75




Technical Specifications of the Elevator Inverter 


Item		Technical index
Max. output voltage (V)		Three phase, 380/400/415/440/460V
Input power supply	Phase number, voltage, frequency	Three-phase, 380/400/415/440/460V 50/60Hz
	Allowable voltage change	-15% ~ +10%
	Allowable frequency change	-5% ~ +5%
	Elevator inverter operation condition when voltage dips	When voltage is AC300V or above: operate continuously When the rated input voltage drops to a voltage below AC300V: under-voltage protection is available in 15ms.
Control characteristic	Control mode	Vector control with PG card V/F control Open loop vector control Torque control
	Starting torque	150%: 0Hz (PG card vector control) 120%: 0.5Hz (V/F control) 150%: 0.5Hz (open loop vector control)
	Speed control range	1:1000 (vector control with PG card) 1: 200 ( vector control without PG card)
	Speed control precision	±0.02% (vector control with PG card, 25 ±10 ?); ±0.2% (vector control without PG card 25 ±10 ?)
	Torque limitation	Available through parameter setting
	Torque precision	±5%
	Frequency control range	0 ~ 120Hz
	Frequency precision (temperature fluctuation )	±0.01% (Digital command, -10 ~+45? ) ±0.1% (Analog command, 25 ±10 ?)
	Preset frequency resolution	0.01Hz (Digital command) ±0.06Hz/120Hz (Analog command, 11bit + unsigned)
	Output frequency resolution	0.01Hz
	Overload capacity	Zero speed: 150% , < 3Hz: 160%, > 3Hz: 200%
	Braking torque	150% (external brake resistor), built-in brake unit
	Acceleration / deceleration time	0.01 ~ 600s
	Carrier frequency	2 ~ 11kHz
	Speed setting	Digital setting, analog setting, control panel setting
	Storage battery operation	If power failure occurs, the elevator inverter allows the elevator to work on storage batteries at a low speed, thus enabling the elevator to stop at the nearest floor
PG card interface signal	PG-card power supply	5V, 12V, 300mA
	PG-card signal type	Open collector, push-pull, differential, SIN/COS, Endat absolute types
	PG-card frequency divided output	OA and OB orthogonal, dividing frequency coefficient: 1-128
Control signal input/output	Analog voltage input	2 input channels, -10 ~ +10VDC, precision 0.1%
	Analog voltage output	2 output channels, -10 ~ +10VDC, precision 0.1%
	Opto-isolator input	8 input channels, input function is user-defined
	Open collector output	4 output channels, output function is user-defined
	Programmable relay output	2 output channels, normally open and closed contacts are available; Contact capacity: resistance: 5A 250VAC or 5A 30VDC Output function is user-defined
	RS485 communication signal	1-channel,
	RS232 communication interface	1-channel, used for connection to control system or PC
Protection functions	Motor overload protection	The function is available through parameter setting
	Elevator inverter overload protection	< 3Hz: 160%, 5 seconds > 3Hz : 185%, 10 seconds
	Short circuit protection	Protect the elevator against over-current caused by short circuit of any two output phases
	In-operation input phase loss protection	During operation, if there is input phase loss, output is stopped to protect the elevator inverter
	In-operation output phase loss protection	During operation, if there is output phase loss, output will be stopped to protect the elevator inverter
	Over-voltage threshold	Bus voltage 410V(200V series), 810V(400V series)
	Under-voltage threshold	Bus voltage 180V (200V series), 380V(400V series)
	Instantaneous power off compensation	Protection over 15ms
	Overheat of radiation fins	Protection is available through thermistor
	Speed loss protection	Available when the operation speed variation is over 30% of rated speed
	Impulse encoder failure protection	Disconnect PG
	Braking unit protection	Automatic diagnosis of braking unit failures, and then give protections
	Module protection	Include overcurrent, short circuit and overheat protections
	Current sensor protection	Auto detect when powered on
	Reversed-speed protection	Detect through encoder
	I ²t protection	Detect through 3-phase current
	Over-high input voltage protection	400V series: > 725V 200V series: >360V Detect when stopped
	Output ground fault protection	If there is any short circuit to ground during operation, the output will be stopped to protect the elevator inverter
	Output unbalance protection	If there is unbalanced output current, the output will be stopped to protect the elevator inverter
	Short circuit protection for brake resistor	Detect while braking
	Encoder interference	Evaluate the encoder interface degree and alarm
	EEPROM failure	Detect when powered on
Display	LCD display	All sub-menus
Operation environment	Ambient temperature	-10 - +45?
	Humidity	95%RH or below (no condensing)
	Storage temperature	-20 ~ +60? (storage during short term transportation)
	Application places	Indoor (without corrosive gas and heavy dust)
	Altitude	1000m or lower
Structure	Protection class	IP20
	Cooling method	Forced air cooling
Installation method		In cabinet




We are a major elevator inverter manufacturer and supplier in China. We offer various types of products such as general vector inverter, elevator group control system, energy regenerator and car controller board.

As one of the leading manufacturers and suppliers of elevator dedicated frequency converter in China, we warmly welcome you to buy our quality and durable elevator dedicated frequency converter with competitive price. We will offer you good after-sale service and fast delivery.