Product Overview

The frequency inverter (AC Drive) from VEICHI's AC310 series uses field-oriented vector control technology compatible with the control of synchronous and asynchronous motors. Under conditions of high performance and reliability, the components are sensibly arranged to achieve a slim, book-style design that saves installation space.

AC310 is a high-performance vector controller that continues the hardware design concept of the AC300, retaining the characteristics of VEICHI's new generation of products while introducing innovations in functional performance. It not only uses leading international technology but also enriches the control methods for various types of loads (such as EPS power supply with voltage-frequency separation). Special attention has been paid to ease of use and industrial design.

The device is equipped with a rich set of expansion ports and new accessories to achieve high performance, high power density and broad applicability. It satisfies the STO safety function in accordance with the SIL3 standard.

Product Features

• High-performance platform: Universal vector platform and an entirely new motor control algorithm.
• Versatility: Integrated control of synchronous and asynchronous motors, comprehensive open-loop and closed-loop control.
• Precision: Precise separation of torque excitation and excellent dynamic response.
• Compact design: Slim, book-style design across the entire series that saves maximum installation space.
• Cooling: Comprehensive thermal simulation to ensure a rational hardware layout.
• Innovation: Innovative grounding method that quickly resolves electromagnetic interference issues.
• Modularity: Modular software and hardware design with powerful expansion capabilities.
• Protection: The printed circuit board (PCB) is coated with a triple protective varnish to improve environmental adaptability.

Functions and Advantages

Standard Machine for "Special" Use

AC310 continues the innovative mechanism of the AC300, retaining the original characteristics to facilitate customer choice. It has an industrial expansion function that can be supplemented according to actual needs. It integrates multiple parameters to achieve a "special" application of the standard device.

Active Response to Industry 4.0

Supports various types of DCS systems and PLCs. Supports various touchscreens and direct communication, standard MODBUS-RTU communication, as well as (optionally) compatibility with PROFIBUS-DP, CANopen and PROFINET.

Perfect Protection Mechanism and Software Suppression

Features hardware protections: ground short-circuit protection, internal buffer relay protection, fan circuit protection, external 24V DC short-circuit protection, and motor overload protection. Software functions include suppression of: voltage drop, overvoltage, overcurrent and over-excitation.

Unique Ingenuity and Excellent Algorithms

• Driving various loads: synchronous, asynchronous motors, synchronous reluctance motors, electric spindles, AC servo motors, etc.
• Complete control modes: V/F, voltage-frequency separation, open/closed-loop vector control.
• Motor self-learning: Leading algorithm for accurate and stable self-learning (dynamic and static).
• High-speed field weakening: High-bandwidth current vector, up to 12 times high-precision output during field weakening.

New Appearance and Ease of Use

The slim design reduces volume by up to 60%. Side-by-side installation capability. New keypad with dual display option. European-style terminals for quick wiring. Optimized VCASoft Ver1.3 software to minimize setup time.

Industrial Applications

Applicable for: fans and water pumps, air compressors, wire drawing machines, die casting machines, ball mills, machine tools, industrial washing machines, lifting equipment and other industries.

Technical Specifications

Parameter	Value / Description
Power Level
Single-phase 220 V 50/60 Hz	0.75 kW - 220 kW
Three-phase 220 V 50/60 Hz	0.75 kW - 220 kW
Three-phase 380 V 50/60 Hz	0.75 kW - 1,120 kW
Input Parameters
Voltage and frequency	Single-phase: 220V 50/60Hz; Three-phase: 220V 50/60Hz; Three-phase: 380V 50/60Hz
Permissible fluctuations	Voltage imbalance: <3%; Frequency: ±5%; Distortion: per IEC61800-2
Inrush current	Less than the rated current
Power factor	≥0.94 (with DC reactor)
Efficiency	≥96%
Output Parameters
Output voltage	3 phases, from 0 to the input voltage, deviation <5%
Output frequency	Type G: 0 ～ 599 Hz
Frequency accuracy	Maximum frequency ±0.5%
Overload capacity	Type G: 150% of rated current for 1 min, 180% for 10 sec, 200% for 0.5 sec. Type P: 120% of rated current for 1 min, 140% for 10 sec, 150% for 0.5 sec.
Key Control Characteristics
Motor type	Three-phase asynchronous motor; Permanent magnet synchronous motor
Control mode	V/F control, sensorless vector control (open loop), sensor vector control (closed loop)
Carrier frequency	1.0 ～ 16.0 kHz
Speed range	VC without PG: 1:1000 at rated load
Speed stability	VC without PG: ≤2% of rated synchronous speed; VC with PG: ≤0.05%
Starting torque	VC without PG: 150% at 0.5Hz; VC with PG: 200% at 0Hz
Torque response	VC without PG: <20 ms; VC with PG: <10 ms
Frequency accuracy	Digital setting: max. frequency × ±0.01%; Analog setting: max. frequency × ±0.2%
Frequency resolution	Digital setting: 0.01Hz; Analog: max. frequency × 0.05
Basic Functions
Torque control	Speed limitation in torque control mode
DC braking	Start frequency: 0.00 ～ 50.00Hz; Time: 0.0 ～ 60.0 sec; Current: 0.0 ～ 150.0%
V/F curve	Linear, custom, square, multi-point
Acceleration and deceleration	Linear and S-curve. 4 time groups, max. time 650.00 sec.
Automatic voltage regulation (AVR)	Automatically keeps the output voltage stable during grid fluctuations
Energy saving	V/F automatic voltage optimization according to load
Frequency channels	Keypad, analog terminals AI1, AI2, communication, pulses, expansion boards
External outputs	1 relay output, 1 open collector, 1 analog output (AO): 0~10V or 4~20mA
Protection Functions
Protection types	Overvoltage, undervoltage, current limiting, overcurrent, overload, overheating, phase loss, data protection, etc.
Keypad and Display
LED display	Built-in keypad (1 parameter). External keypad: dual display (2 parameters).
Parameter copying	Ability to upload and download parameters for quick copying.
Operating Environment
Installation site	Altitude < 1000m (derating by 1% for every 100m above 1000m). Non-condensing.
Temperature and humidity	-10 ～ +50°C (derating above 40°C, max. 60°C). Humidity 5%~95%RH.
Vibration	9 ～ 200Hz, 5.9m/s² (0.6g)
Protection rating	IP20 (wall mounting, forced air cooling)

Price List for AC310 Frequency Inverters

Below you can find the current prices for the models in the AC310 series.