Low voltage drives

Decentral drives, motion drives and gear motors

Soft starters

  • VLT®Soft Start Controller MCD 100
  • VLT®Compact Starter MCD 200/202
  • VLT® Soft Starter MCD 500

Options

VLT®Soft Start Controller MCD 100

A compact and cost-effective soft starter

An extremely cost-effective and compact soft starter that provides basic soft start and stop functionality and easy DIN rail mounting.

The ‘fit and forget’ semiconductor design simplifies installation and reduces required panel space, and selection can be made on the basis of the motor power. Timed voltage ramp up and down are possible. Ramp time can be individually and accurately adjusted with rotary switches from 0.4–10 seconds, and starting torque can be adjusted from 0–85% of the direct on-line torque.

Supply voltages and power range

3 x 208-600 V...0.1-11 kW

Features and benefits

Panel space can be saved due to the compact size

Selection is simple and stock is kept to a minimum thanks to universal control voltage

Commissioning time and space are saved as a result of easy DIN rail mounting for sizes up to 30 kW

Reliable operation is ensured due to robust semiconductor design and an almost unlimited number of starts per hour without derating

No external cooling or oversizing is necessary thanks to the maximum ambient temperature of 50°C without derating

Applications

Scroll compressors or reciprocating compressors in air-conditioning units, conveyors, pumps, fans and mixers.

PC tools

  • WinStart
  • VLT® Motion Control Tool MCT 10
  • VLT® Motion Control Tool MCT 31
  • Danfoss HCS (Harmonic Calculation Software)
  • Danfoss Servo Sizer
  • VLT® Energy Box

VLT®Compact Starter MCD 200/202

Compact but powerful soft starters

Two families of soft starters that provide a total motor starting solution for motors up to 110 kW. The MCD 201 offers efficient motor-starting features, while the extended MCD 202 version provides enhanced soft-start functionality and additional motor-protection features.

The series of soft starters offers easy DIN rail mounting for sizes up to 30 kW, 2-wire or 3-wire start/stop control and excellent starting duty (4 x le for 6 seconds; heavy starting ratings at 4 x le for 20 seconds). They are compatible with grounded delta power systems.

Supply voltages and power range

3 x 200-440 V...7.5-110 kW<
3 x 200-575 V...7.5-110 kW

Features and benefits

Panel space can be saved due to the compact size

Installation costs are minimized and power loss eliminated thanks to the built-in bypass

More starts per hour and a higher load is possible as a result of advanced SCR Control Algorithms that balance output waveform

Overall project investment is reduced due to essential motor protections

No external cooling or oversizing is necessary thanks to the maximum ambient temperature of 50°C without derating

Applications

Pumps, conveyors, fans, mixers and compressors.

PC tools

  • WinStart
  • VLT® Motion Control Tool MCT 10
  • VLT® Motion Control Tool MCT 31
  • Danfoss HCS (Harmonic Calculation Software)
  • Danfoss Servo Sizer
  • VLT® Energy Box

VLT®Soft Starter MCD 500

Effectively protect motors while saving energy

A comprehensive solution for soft starting and stopping of three-phase asynchronous motors that increases uptime and reduces maintenance requirements.

By integrating soft starters with AC motors, you can save energy, space and costs and increase the lifetime of your system by reducing wear on motors, power cables and the electrical distribution system. And there is no need to consider filters and screened cables, as soft starters generate zero harmonics.

Supply voltages and power range

200-690 V...7.5-850 kW

Features and benefits

Programming is quick and easy thanks to three menu systems (Quick Menu, Application Setup and Main Menu), a four-line graphical display and a logic keypad

The best starting and stopping profile for the application is chosen using Adaptive Acceleration Control

Motors can be used to their full potential without risk of damage from overloading due to second-order thermal model

Installation costs are lower and there is less stress on the motor thanks to DC injection braking distributed evenly over three phases

Space can be saved, cabling costs reduced and retrofitting made easier as a result of adjustable bus bars which allow for both top and bottom entry

Applications

Centrifugal pumps and fans, conveyors, crushers, grinders, mixers, compressors, centrifuges, mills and saws.

PC tools

  • WinStart
  • VLT® Motion Control Tool MCT 10
  • VLT® Motion Control Tool MCT 31
  • Danfoss HCS (Harmonic Calculation Software)
  • Danfoss Servo Sizer
  • VLT® Energy Box

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