Siemens 6SR41 series Product User Manual page 191

I/O
I/O is an acronym for input/output. I/O refers to any and all inputs and outputs connected to a
computer system. Both inputs and outputs can be classified as analog (e.g., input power,
drive output, meter outputs, etc.) or digital (e.g., contact closures or switch inputs, relay
outputs, etc.).
IGBT
IGBT is an acronym for Insulated Gate Bipolar Transistors. IGBTs are semiconductors that
are used in the Perfect Harmony drives to provide reliable, high-speed switching, high-power
capabilities, improved control accuracy, and reduced motor noise.
Induction motor
An induction motor is an AC motor that produces torque by the reaction between a varying
magnetic field (generated in the stator) and the current induced in the coils of the rotor.
Intel hex
Intel hex refers to a file format in which records consist of ASCII format hexadecimal (base
16) numbers with load address information and error checking embedded.
Inverter
The inverter is a portion of the drive that changes DC voltage into AC voltage. The term
"inverter" is sometimes used mistakenly to refer to the entire drive (the converter, DC link,
and inverter sections).
Jog mode
Jog mode is an operational mode that uses a pre-programmed jog speed when a digital
input (programmed as the jog mode input) is closed.
Jumpers
Jumper blocks are groups of pins that can control functions of the system, based on the
state of the jumpers. Jumpers (small, removable connectors) are either installed (on) or not
installed (off) to provide a hardware switch.
Ladder logic (Also Ladder Diagram)
A graphical representation of logic in which two vertical lines, representing power, flow from
the source on the left and the sink on the right, with logic branches running between,
resembling rungs of a ladder. Each branch consists of various labeled contacts placed in
series and connected to a single relay coil (or function block) on the right.
Product User Manual
Operating Instructions, Version AE 12/2009, A5E01454341C
Glossary
189