Rockwell Automation 2364F Regenerative DC Bus Supply Unit (RGU) - Manual (Page 214)

Publication 2364F-5.01– October 2003
G-2 Glossary
DSP (Digital Signal Processor)
A processor on the main control board which is used to process the current loop.
Enable
When a unit is enabled, the control logic is directing the motoring or regenerative current
by modulating its hardware (IGBTs).
Feedback
Signals from the hardware which indicate the hardware status to the control logic.
Gate Driver Board
The RGU gate driver board is responsible for modulating the power modules and
supplying power to the control boards. The gate driver board is interfaced with the main
control board.
Graphic Programming Terminal (GPT)
A programming terminal with a graphical LED display and a pushbutton keyboard which
is used to program, control, and view the status of a unit. The GPT is also able to load and
store parameters in its local memory.
Host Processor
The main processor on the main control board of the RGU. This component processes
feedback and controls most of the activities in the RGU.
Human Interface Module (HIM)
A programming terminal used to program, control, and view the status of a unit.
Insulated Gate Bipolar Transistor (IGBT)
A transistor which can be used to allow current to flow in two opposite directions.
Also known as power module.
Isolation Board
The RGU isolation board receives direct feedback from the AC line, DC bus, and current
transducers. This board supplies scaled feedback to the main control board.
Main Control Board
The RGU main control board regulates the voltage and current, oversees activities in the
unit, and processes I/O. This board is isolated from the power circuitry.
Metal-Oxide Varistor (MOV)
A component used to protect against voltage surges and excessively high line-to-line/line-
to-ground voltages.