Mitsubishi Electric MEsoftstart/I01 Users, Installation & Instruction Manual page 6

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Abbreviation
Definition
AC
Alternating Current
AC3
Device category for squirrel cage motors
AM
Amplitude Modulation
BAUD
Bits per second (relating to the Modbus link)
CE
Conformité Européenne (for conformity with protection standards of the European Economic Area)
COM
Communication port on PCs
CT
Current Transformer
EMC
Electromagnetic Compatibility
EMI
Electromagnetic Interference
FC
Function Codes (Modbus)
GND
Ground / Earthing
GPRS
General Packet Radio Service
HMI
Human Machine Interface
I/O
Input / Output
IEC
International Electro-technical Commission
L1
Supply Line Phase 1
L2
Supply Line Phase 2
L3
Supply Line Phase 3
MCCB
Moulded Case Circuit Breaker
MFLC
Maximum Full Load Current
MFS
Motor Frame Size (in kW)
MODBUS
Communication Protocol originally published by Modicon (now Schneider Electric) in 1979
MOLC
Motor Overload Current
MSC
Maximum Starting Current
MULC
Motor Underload Current
OC
Open Circuit
PC
Personal Computer
PF
Power Factor
PLC
Programmable Logic Controller
PTC
Positive Temperature Coefficient thermistor
RJ45
Connector standard (used for Modbus RTU and TCP communications on MEsoftstart)
RMS
Root Mean Square
RPM
Revolutions per Minute
RS485
Electrical standard for use in serial communications (used for Modbus in MEsoftstart)
RTD
Resistance Temperature Detector (e.g. PTC)
RTU / TCP
Protocol variants for Modbus (RTU for RS485 serial and TCP for Ethernet communication)
SC
Short Circuit
SCADA
Supervisory Control and Data Acquisition
SCR
Silicon Controlled Rectifier
SICD
Software Interface Control Document
TFT
Thin Film Transistor (display)
USB
Universal Serial Bus
VL-L
Voltage Line to Line
6 Contents
List of Abbreviations

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