Installation and Operation Guide
ED-DT318B
Drive Train Systems with Traction Control, Inverter/Controller, and Motor with 2 Speed Transmission
BC353060341319en-000101
© Danfoss | November 2020 | 176
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Appendix C: Glossary
Baud:
The unit in which the information carrying capacity or signaling rate of a communication channel is
measured. One baud is one symbol per second.
Brushless Permanent Magnet (PM) Motor:
A synchronous electric motor that uses permanent magnet
excitation.
Bus:
A subsystem that transfers data or electric power between two or more components.
CANbus (Controlled Area Network):
A broadcast, differential serial bus standard, originally developed in 1988
by Intel Corporation and Robert Bosch, for connecting electric controlled units. CAN is a communication system
whereby multiple nodes connect to over a single connection medium called the Bus.
Capacitors:
An electric current element used to store charge temporarily, consisting in general of two metallic
plates separated and insulated from each other by a dielectric.
Controller:
A mechanism that controls the operation of a machine.
DC/AC (direct current/alternating current):
Unidirectional flow of electric charge to electrical current whose
magnitude and direction vary cyclically.
DSP (Digital Signal Processor):
A specialized microprocessor designed specifically for the study of signals in
digital representation.
EMI/EMC (Electromagnetic Interference/Electromagnetic Compatibility):
EMC is the branch of electrical
science which studies the unintentional generation, propagation, and reception of electrical magnetic energy
with reference to the unwanted effects (EMI) that such energy may induce.
Fault:
A partial or total local failure in the insulation or continuity in the conductor or functioning of an electric
system.
Firmware:
Computer programming instructions that are stored in a read-only memory unit rather than being
implemented through software.
Inverter:
A device that converts direct current into alternating current.
Microprocessor:
An integrated circuit that contains the entire central processing unit on a single chip.
Motor:
A machine that converts electric energy into mechanical energy.
O-ring:
A loop of elastomer with a round (o) shape, used as a mechanical seal or gasket.
Potentiometer:
A variable tapped resistor that can be used as a voltage divider.
Regenerative:
To magnify the amplification of, by relaying part of the output circuit power into the input circuit.
Ripple:
The alternating current component from a direct current power supply arising from sources within the
power supply.
Shaft:
A rotating or oscillating round, straight bar for transmitting motion and torque, usually supporting on
bearings and carrying gears, wheels, or the like, as a draft shaft of an engine.
Sine wave:
A geometric waveform that oscillates periodically, as it is defined by the function y = sin x. In other
words, it is an s-shaped smooth wave that oscillates above and below zero.
Soft Start:
A term describing any circuit, which is current limited during initial power up.
Software Watchdog Timer:
An independent parallel component, which detects software errors’ and hardware
errors’ reliability.
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