Acronyms And Abbreviations; Explanation Of Concepts - ABB PSE 18 Installation And Commissioning Manual

10 Chapter 1 Softstarters Type PSE18...PSE370 Installation and commissioning manual 1SFC132057M0201

1.2.3 Acronyms and abbreviations

The acronyms and abbreviations described in table 1.1 are used in this manual.
Table 1.1
Acronym/ abbre- Description
viation
BP By-pass
DOL Direct-on-line
EOL Electronic overload protection for the Motor
FB Fieldbus
FBP FieldBusPlug
HMI Human-Machine Interface
I e Rated operational current
IT Information Technology
LCD Liquid Crystal Display
LED Light Emitting Diode
PCB Printed Circuit Board
PLC Programmable Logic Controller
PTC Positive Temperature Coefficient
SC Short Circuit
SCR Silicon Controlled Rectifier (thyristor)
TOR Top of Ramp (full voltage/Full-On)
U c Rated control circuit voltage *
U e Rated operational voltage *
U s Rated control supply voltage *
*) For definition see IEC 60947-1 edition 5.0

1.2.4 Explanation of concepts

The setting of current I e is the setting for the rated operational current (main cur-
rent) of the motor.
U e = Rated operational voltage on the motor's operational current (three phase
main voltage feeding the motor).
U s = Rated control supply voltage, feeding the electronics in the softstarter.
U c = Rated control voltage, used for controlling the softstarter.