ABB ACS800-17LC, Hardware Manual

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Introduction to the manual
24
Four-quadrant
operation Operation of a machine as a motor or generator in quadrants I, II, III and
IV as shown below. Also used as an attribute of a drive; a regenerative
drive can operate the electric machine in all four quadrants, a non-
regenerative only in two. In quadrants I and III, the machine operates as a
motor, whereas in quadrants II and IV it operates as a generator
(regenerative braking).
Frame (size) Refers to power modules that share a similar mechanical construction, for
example:
• inverter modules of frame R8i
• frame 2×R8i + 2×R8i includes two size R8i supply modules and two R8i
inverter modules.
To determine the frame size of a component, refer to section Type
equivalence table on page 147 ..
IGBT Insulated gate bipolar transistor
IGBT supply module Bidirectional IGBT bridge and related components enclosed inside a metal
enclosure. Used as the supply module in regenerative and low-harmonic
drives.
IGBT supply unit (ISU) IGBT supply modules under control of one control board, and related
components. See
IGBT supply module .
Inverter Converts direct current and voltage to alternating current and voltage.
Inverter module Inverter bridge, related components and drive DC link capacitors enclosed
inside a metal enclosure.
Inverter unit (INU) Inverter module(s) under control of one control board, and related
components. One inverter unit typically controls one motor. See
Inverter
module.
LCL filter Inductor-capacitor-inductor filter for attenuating harmonics
PPCS Power plate communication system; a protocol used in the optical fiber
link that controls the output semiconductors of a power module.
RAPI Auxiliary power interface board.
RDCU Drive control unit. The RDCU is a separate unit consisting of an RMIO
board built in a plastic housing.
RFI filter Radio-Frequency Interference filter.
Term/Abbreviation Explanation
Speed
Torque
I
IV III
II