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
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
User-friendly LCP
•
Loggings
•
Real-time graphs
•
SCR conduction bar graph
Tools
•
Application setups
•
Date and time stamped event log with 99 entries
•
8 most recent trips
•
Counters
•
Protection simulation
•
Output signal simulation
Inputs and Outputs
•
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
Start and run modes
•
AAC - Adaptive Acceleration Control
•
Constant current
•
Current ramp
•
Kickstart
•
Jog
•
Emergency run operation
Stop modes
•
AAC - Adaptive Acceleration Control
•
Timed voltage ramp soft stop
•
DC brake
•
Soft brake
•
Emergency stop
Other features
•
Auto start/stop timer
•
Second order thermal model
•
Battery backup of clock and thermal model
•
Optional DeviceNet, Modbus or Profibus
communication 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
MG17K402 - VLT
®
is a registered Danfoss trademark
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