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IGBT supply module Bidirectional IGBT bridge and related components enclosed inside a metal
frame or enclosure. Intended for cabinet installation. Used as the supply
module in regenerative and low-harmonic drives.
IGBT supply unit (ISU) See Line-side converter.
Inverter module Inverter bridge, related components and drive DC link capacitors enclosed
inside a metal frame or enclosure. Intended for cabinet installation.
Inverter unit (INU) See Motor-side converter.
Line-side converter A converter that is connected to the supply network and is capable of
transferring energy from the network to the DC link of the drive, or from
the DC link of the drive to the network. With ACS800-17 drives of frame
size R8i and above, the line-side converter is also called the (IGBT)
supply unit or the ISU.
Motor-side converter A converter that is connected to the motor and controls the motor
operation. With ACS800-17 drives of frame size R8i and above, the
motor-side converter is also called the inverter unit or INU.
PPCS Power Plate Communication System; a protocol used in the optical fibre
link that controls the output semiconductors of an inverter module.
RDCU Drive control unit. The RDCU is a separate unit consisting of an RMIO
board built in a plastic housing.
RFI Radio-Frequency Interference.
RMIO Motor control and I/O board. Contains the principal inputs and outputs of
the drive. The RMIO is contained within the RDCU drive control unit.
THD Total Harmonic Distortion.
Term/Abbreviation Explanation
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