
2 Introduction
The MCD 500 is an advanced digital soft start solution for motors from 7 kW to 800 kW. MCD 500 soft starters provide a
complete range of motor and system protection features and have been designed for reliable performance in the most
demanding installation situations.
2.1.1 Feature List
M
Models for all connection requirements
•
21 A to 1600 A (in-line connection)
In-line or inside delta connection
Internally bypassed up to 215 A
Mains voltage: 200 - 525 VAC or 380 - 690 VAC
Control voltage: 24 VAC/VDC, 110 - 120 VAC or 220
- 240 VAC
Loggings
Real-time graphs
SCR conduction bar graph
Application setups
Date and time stamped event log with 99 entries
8 most recent trips
Counters
Protection simulation
Output signal simulation
Local or remote control input options
(3 x fixed 1 x programmable)
Relay outputs (3 x programmable)
Analog programmable output
24 VDC 200 mA supply output
AAC - Adaptive Acceleration Control
Constant current
Current ramp
Kickstart
Jog
Emergency run operation
AAC - Adaptive Acceleration Control
Timed voltage ramp soft stop
DC brake
Soft brake
Emergency stop
Auto start/stop timer
Second order thermal model
Battery backup of clock and thermal model
Optional DeviceNet, Modbus or Profibus communi-
cation modules
Comprehensive protection
•
Wiring/Connection/Supply
Motor connection
Phase sequence
Power loss
Individual phase loss
Mains frequency
Current
Excess start time
Current imbalance
Undercurrent
Instantaneous overcurrent
Thermal
Motor thermistor
Motor overload
Bypass relay overload
Heatsink temperature
Communication
Network comms
Starter comms
External
Input trip
Starter
Individual shorted SCR
Battery/Clock
Introduction MCD 500 Operating Instruction
6 MG.17.K3.02 - VLT
®
is a registered Danfoss trademark
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