Variable Frequency Drives

Flux Vector Controls

Oil Drilling Platform



The SN-HH series of AC drives is a high performance AC Drive  that produces an output of adjustable voltage and frequency to control the speed of a squirrel cage induction motor for drilling. The modular design unit has separate converter capacitor inverter sections installed in a common enclosure. Sections can be paralleled to increase power.

This PWM design provides high starting torque by use of IGBT transistors. The drive provides 3 modes of control and speed accuracy to suit application requirements; V/Hz (2%), sensor less vector (0.1%), or flux vector control (0.01% / motor-mounted Resolver (standard) and drive-mounted PG-RD1 card required). Programmable, networkable, and modular are outstanding features of the SN-HH series AC drive.

General Industrial Machines - EI 450M


 AC Drive is a mini power saving inverter. It features the most simple AC induction motor controller from 200W up to 1.5kW for 220VAC and 440VAC Class. The status indicator LED and 7-segment display are built in and can show the data value for the easy reading.
AC Drive is small, quiet and powerful. 

Multiple Motor Drives - Super N


 AC Inverter Motor Drive is the comprehensive flux vector control AC inverter. AC Inverter Motor Drive can be used in elevator, lift application. There are four control patterns: Standard V/F control, V/F control with PG feedback, Sensorless flux vector control and vector control with PG feedback. EI-Super provides the servo-like precision machinery to multiple types of motor drives. The capacity of AC Inverter Motor Drive is up to 900kW. Large power can be custom-designed in the cabinet protection. 

Synchronous and Induction Motors


 AC Inverter is a high-performance vector control AC Drive Inverter. The frequency reference can come from built-in potentiometer, analog input reference and serial communication. The capacity can go up to 30kW. The great feature is the configurable voltage/frequency characteristics to achieve the power-saving control. 

Compact Industrial Machines - EI 450


 AC Drive features V/F control pattern. AC Drive has MODBUS message format and optional RS-485 communication card. The widely applied capacity ranges from 0.75kW up to 7.5kW for 220VAC and 440VAC Class. It is built in with digital keypad operator (RCUS-450). 

EI 550 AC Drive


 AC Motor Drive is a small General-purpose Vector control AC inverter for convention vector control application. The copy keypad functions are operated for easy parameters setting. AC Motor Drives with 17 multi-speed settings available for the speed control. The capacity includes 0.75kW up to 7.5kW for 220VAC and 440VAC Class.