Variable Speed Drives
Widely used in applications ranging from industrial equipment for power reduction and process improvement.
Slider

Variable Speed Drives (VSDs)

About Variable Speed Drives (VSDs):

Variable Speed Drive (VSD) is also commonly referred to as a Variable Frequency Drive (VFD) or an AC Drive. The drive works on changing the frequency of an AC motor (always refers to and can only be used with AC motors).

How Variable Speed Drives (VSDs) work:

Variable Speed Drive (VSDs) take the fixed-frequency AC supply and convert this to a variable-frequency AC supply. This controls the power use and mechanical power output so that the motor can run at the most efficient speed for the motor and the process.

Key features and benefits of Variable Speed Drives (VSDs):

VSDs helps to improve overall performance through faster acceleration rates and more precise speed and position control (rotate parts with high efficiency and great precision).

Variable Frequency Drives

TCGC distributes the following EMHEATER Variable Speed Drives (VSDs):

EM15-G1 Series
Variable Speed Drive

Single-Phase (200-240V) Input

3-Phase (200-240V) Output

EM15-G3 Series
Variable Speed Drive

3-Phase (380-440V) Input

3-Phase (380-440V) Output

EM15-G13 Series
Variable Speed Drive

Single-Phase (200-240V) Input

3-Phase (380-440V) Output

EM15-G2 Series
Variable Speed Drive

3-Phase (200-240V) Input

3-Phase (200-240V) Output

EM15-G5 Series
Variable Speed Drive

3-Phase (525-575V) Input

3-Phase (525-575V) Output

VSD Benefits

Variable Speed Drives are probably the best method for controlling motor speed in response to varying process demands. These small decreases in the speed of pumps and fans or the pressure of pumps could lead to large decreases in energy use (and thus electricity costs).

For example, using a VSD to reduce the:

  • speed of an AC motor by 20%, could reduce the energy consumption by around 50%;
  • pressure in a pump by 20%, could reduce the energy consumption by around 28%.

 

Most VSDs incorporate other benefits such as:

  • Programmable soft starting, soft stopping and dynamic braking;
  • Built-in energy optimisation features;
  • Fail-safe bypass in the event of failure.
Variable Speed Drives
Variable Speed Drive Image

VSD Features

Following are some of the key VSD features:

  • First class frequency inverter with high quality software and hardware;
  • Includes Servo drive feature with perfect speed control mode and excellent torque control mode;
  • Includes vector control (SVC), vector control +PG, V/F control and V/F separation control;
  • Includes 49 digital input functions and 38 digital output functions;
  • S-curve acceleration and deceleration (user defined S-curve turning time);
  • IGBT carrier frequency can auto adjust according to heatsink temperature;
  • 35 protection functions including auto detecting short circuit when powering on;
  • Input Range: l PH 220~240V; 3PH 220~690V;
  • Output frequency range: V/F(0~3200Hz); SVC(0~300Hz);
  • Includes textile swing frequency and skip frequency functions;
  • Overload capacity: 60s with 150% of rated current, 3s with 180% of rated current;
  • Built-in RS485 communication interface and approved by CE (all models).

Spares

TCGC offers the following EMHEATER standard Spare Parts:

Keypad  |  Control Card  |  Power Card  |  IGBT Model  |  Fan  |  Capacitor  |  Rectifier  |  Fan Board  |  Keypad Extender

Accessories

TCGC offers the following additional items to be used for EMHEATER products:

Dynamic Braking Systems | Aluminium Housed Braking Resistors | DC Chokes/Reactors | AC Chokes/Reactors | AC EMC/EMI Filters (Noise Filters) | Sine Wave Filters | Enclosures | Custom Built Panels | Remote Monitoring and Control Devices