3BHS842007 E01 REV C
ACS6080
USER MANUAL
01 ABOUT THIS MANUAL
FT
Firing Through
Synonym for protective firing. Meaning: simultaneous
gating of the power semiconductors of the inverter unit
to effectively protect the semiconductors against
overvoltage and overcurrent.
FSCD
Fast Short-Circuit Detection
Ground (noun)
Earth
ground (verb)
The conducting path (eg, conductor) between the electric
equipment (eg, frequency converter) and the earth. The
electric equipment is connected to the earth, eg, by a
grounding set or a grounding switch.
GCT
Gate-Commutated Thyristor
GTO
Gate Turn-Off thyristor
GUSP
Gate Unit Supply Power
HVD
High Voltage Divider
I/O
Input / Output
IEC
International Electrotechnical Commission
IFU
Input Filter Unit
IGBT
Insulated-Gate Bipolar Transistor
IGCT
Integrated Gate-Commutated Thyristor
ISU
Isolation Unit
IM
Induction Motor
INT
Interface circuit board
INU
Inverter Unit
The INU converts the three DC voltages to the required AC
motor voltage. The unit is designed as a self-
commutated, 3-level voltage source inverter consisting of
three identical power modules.
I/O device
Term ABB’s S500 I/O system. An I/O device consists of a
module termination unit (MTU) and one I/O module.
I/O module
Term of ABB’s S500 I/O system. The I/O module is an
active input or output device for digital or analog signals.
I/O station
Term of ABB’s S500 I/O system. The I/O station typically
consists of a bus modem and several input and
output devices.
IOI
Inverter Output Isolator
The IOI is a switching device that disconnects the inverter
from the motor.
Table 1-1 Terms and abbreviations (continued)
Term/Abbreviation
Definition
