Danfoss VLT MCD 201

Danfoss Drives · DKDD.PB.551.A1.02 | 3
Soft Starter Selection Guide
Warnings .................................................................................................................................... 5
Common Applications .......................................................................................................... 6
MCD Soft Starter Features and Specications ............................................................. 8
Current Ratings ........................................................................................................................11
Soft Starter Sizing ................................................................................................................. 13
FAQs
Adaptive Acceleration Control .........................................................................................14
AC53 Utilisation Codes ...................................................................................................... 15
Auto-Transformer Starters ............................................................................................... 16
Fault nding ............................................................................................................................. 16
Braking ....................................................................................................................................... 17
Bypass Contactor ................................................................................................................. 18
Cabling ..................................................................................................................................... 19
Extreme Conditions ............................................................................................................ 21
Flying Loads ........................................................................................................................... 22
Harmonics .............................................................................................................................. 22
IP Ratings ................................................................................................................................ 23
NEMA Ratings ........................................................................................................................ 24
Inside delta Connection .....................................................................................................25
Key Benets ........................................................................................................................... 26
Line Contactor ...................................................................................................................... 27
Minimum Start Current ..................................................................................................... 28
Multiple Motors .................................................................................................................... 29
Power factor correction .................................................................................................... 30
Motor Thermal Capacity ................................................................................................... 30
Jog ............................................................................................................................................... 31
Reversing ................................................................................................................................ 31
Sealed Enclosures ................................................................................................................ 32
Primary Resistance Starters ............................................................................................. 32
Short Circuit Protection, Type 1 ...................................................................................... 33
Short Circuit Protection, Type 2 ....................................................................................... 34
Semiconductor Fuse Selection, Type 2 ........................................................................ 35
Slip-Ring Motors .................................................................................................................. 38
Soft Braking ........................................................................................................................... 39
Contents