Kollmorgen AKD PDMM series, Руководство пользователя

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AKD PDMM User Guide | Glossary
Term Description
Drive
In electrical engineering, a drive is an electronic device to provide power to a
motor or servo.
Driver
In computing and electronics, a driver is a software component allowing higher-
level computer programs to interact with a computer hardware device.
A driver typically communicates with the device through the computer bus or
communications subsystem to which the hardware is connected.
Eccentricity
The eccentricity is the distance between the centring diameter of the baseplate
and the centring diameter of the rotor. It is not dependent on the position.
Encoders
Generates an output signal that is directly proportional to the movement of the
motor shaft. This signal is fed into the control circuitry in order to control the
shaft position and speed. See also Optical encoders.
The most common types are:
l
Incremental/Serial encoders
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Hall effect sensors
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Resolvers
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Tachometer Generators
Encoder
Counts
Used after quadrature decode.
Encoder
Lines
Used before quadrature decode.
Environment
Environment objects are global objects that exist before the execution of the
script. Typically, they are global objects of Astrolab that can be accessed from
the script.
EtherCAT
"Ethernet for Control Automation Technology" EtherCAT is an open high per-
formance Ethernet-based fieldbus system. The development goal of EtherCAT
was to apply Ethernet to automation applications which require short data
update times (also called cycle times) with low communication jitter (for syn-
chronization purposes) and low hardware costs.
Ethernet
Ethernet is a large, diverse family of frame-based computer networking tech-
nologies that operate at many speeds for local area networks (LANs).
EtherNet/IP
An open industrial application layer protocol for industrial automation appli-
cations.
The EtherNet/IP application layer protocol is based on the CIP layer.
Fast Input
The inputs are taken into account at each cycle depending on the system peri-
odicity (for instance each Millisecond). Under certain circumstances this can
be insufficient when we need more accuracy or if a quick respond from the sys-
tem is required. To fill in the gap, a drive may have some fast input connections
(generally one or two). When an event happens that triggers a Fast Input (e.g.
when a sensor sends a rising edge), the detection of a signal occurs faster
(which can be 1000-times more accurate than the system periodicity). Then the
timestamp associated to this input can be provided to the IPC for taking the cor-
rective actions.
Feedback
Device
Some systems use a feedback device connected to the motor shaft or part of
the driven mechanism to control the direction, acceleration and speed of the
motor.
Fieldbus
A fieldbus is an industrial network system for real-time distributed control (e.g.
CAN, Profibus, Sercos...). It is one of the ways to connect Instruments in a
plant design.
Flatness of
travel Deviation from ideal straight line travel in a vertical plane, also referred to as
vertical runout.
Kollmorgen™ | December 2012 500