Danfoss VLT Soft Starter MCD 500

Danfoss VLT® Soft Starter MCD 500

Danfoss VLT® MCD500 Soft Starters allow for control ramping of all AC motors. Upgrading from DOL or non-Semiconductor controlled starter to a Compact Soft Starter reduces mechanical stress on the motor as well as electrical cable and networks stress, extending the lifespan of the system whilst saving energy and giving a smoother start to the motor. 

Danfoss VLT® MCD500 series Soft Starter is a total motor starting solution. Current Transformers measure motor current and provide feedback for controlled motor ramp and profiles.

The full range of Danfoss VLT® Soft Starters can be viewed here.

IMPORTANT NOTE: Danfoss is phasing out the MCD500 for the newer model MCD600, please take this into consideration when assessing the needs of your application and the most suitable drive. 

  • Soft Start: Current Limit, Current Ramp, Kickstart, AAC Adaptive Acceleration Control
  • Soft Stop: Timed voltage ramp, AAC Adaptive Control, DC Brake
  • Motor Protection: Motor Connection, Power Loss, Phase Loss, Mains Frequency, Current Imbalance, Motor Thermistor, Motor Overload
  • System Protection: Phase Sequence, Excess Start Time, Undercurrent, Instantaneous Overcurrent, Bypass Relay Overload, Heatsink Temperature
  • Metering: Current, Motor Temperature, Motor kW, Motor kVA, Motor pf
  • Control option: Local control panel plus remote inputs / outputs. Dedicated output for MCD LCP 501 Remote Display
  • Network Communication: Options for DeviceNet, Modbus, Profibus and USB
  • Bypass:
    7.5 to 110 kW Internally Bypassed
    132 to 800 kW dedicated terminals for External Bypass Connection
Mains voltage (L1, L2, L3)
  • MCD5-xxxx-T5 200 VAC ~ 525 VAC (± 10%)
  • MCD5-xxxx-T7 380 VAC ~ 690 VAC (± 10%) (in-line connection)
  • MCD5-xxxx-T7 380 VAC ~ 600 VAC (± 10%) (inside delta connection)
  • Control voltage (terminals A4, A5, A6)
  • CV1 (A5, A6) 24 VAC/VDC (± 20%)
  • CV2 (A5, A6) 110~120 VAC (+ 10% / – 15%)
  • CV2 (A4, A6) 220~240 VAC (+ 10% / – 15%)
  • Mains frequency 50/60 Hz (± 10%)
  • Rated insulation voltage to earth 600 VAC
  • Rated impulse withstand voltage 4 kV
  • Form designation Bypassed or continuous, semiconductor motor starter form 1
    Short circuit capability
  • Coordination with semiconductor fuses Type 2
  • Coordination with HRC fuses Type 1
  • MCD500-0021B to 0215B Prospective current of 65 kA
  • MCD500-0245C Prospective current of 85 kA
  • MCD500-1200C to 1600C Prospective current of 100 kA
  • Electromagnetic capability (compliant with EU Directive 89/336/EEC)
  • EMC Emissions (Terminals 13 & 14) IEC 60947-4-2 Class B and Lloyds Marine No. 1 Specification
  • EMC Immunity IEC 60947-4-2
    Outputs
  • Relay Outputs 10A @ 250 VAC resistive, 5A @ 250 VAC AC15 pf 0.3
  • Programmable Outputs
  • Relay A (13, 14) Normally open
  • Relay B (21, 22, 24) Changeover
  • Relay C (33, 34) Normally open
  • Analogue Output (07, 08) 0 – 20 mA or 4 – 20 mA (selectable)
  • Maximum load 600 Ω (12 VDC @ 20 mA) (accuracy ± 5%)
  • 24 VDC Output (16, 08) Maximum load 200 mA (accuracy ± 10%)
    Environmental
  • Protection MCD5-0021B ~ MCD5-0105B IP 20 & NEMA, UL Indoor Type 1
  • Protection MCD5-0131B ~ MCD5-1600C IP 00, UL Indoor Open Type
  • Operating temperature -10° C to 60° C, above 40° C with derating
  • Storage temperature – 25° C to + 60° C
  • Operating Altitude 0 – 1000 m, above 1000 m with derating
  • Humidity 5% to 95% Relative Humidity
  • Pollution degree Pollution Degree 3
    Heat Dissipation
  • During start 4.5 watts per ampere