Siemens SINAMICS PERFECT HARMONY GH180 Function Manual page 327

IGBT
IGBT is an acronym for Insulated Gate Bipolar Transistors. IGBTs are semiconductors that
are used in the drive 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.
Loss of signal feature
The loss of signal feature is a control scheme that gives the operator the ability to select one
of three possible actions in the event that the signal from an external sensor, configured to
specify the speed demand, is lost. Under this condition, the operator may program the drive
(through the system program) to (1) revert to a fixed, pre-programmed speed, (2) maintain the
current speed, or (3) perform a controlled (ramped) stop of the drive. By default, current speed
is maintained.
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Function Manual, AB, A5E33486415A
Glossary
327