Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE User Manual
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Glossary-8
Logic
General term for digital circuits and programmed instructions to perform required
decision-making and computational functions.
M
1.
Mega. A prefix used with units of measurement to designate a multiple of
1,000,000.
2.
1M = 2
20
= 1,048,576. A prefix used as a multiple for bits, bytes, or words in
denoting size of a block of data or memory. Example: 2M bytes = 2,097,152
bytes.
Megger Test
A test used to measure an insulation system’s resistance. This is usually measured
in megohms and tested by passing a high voltage at low current through the moto
windings and measuring the resistance of the various insulation systems.
Menu
A list of options, on a screen, from which a user can select.
Message
1.
A meaningful combination of alphanumeric characters that establishes th
content and format of a report.
2.
In a communication network, the unit of exchange at the application layer.
Microprocessor
A central processing unit that is manufactured on a single integrated circuit (or on
only a few integrated circuits) by utilizing large scale integration technology.
Mode
A selected method of operation. Example: run, test, or program.
Module
An interchangeable plug-in item within a larger (modular) assembly.
Motor
•
AC Motor – is a device that converts (single or multiple phase) alternating
electrical current into mechanical energy. It requires no commutation devices
such as brushes.
•
DC Brushless Moto – is a type of DC motor that uses electronic commutation
rather than brushes (as standard) to transfer current.
•
DC Motor – is a device that converts direct electrical current into mechanical
energy. It requires a commutation device, either brushes or electronic.
•
DC Permanent Magnet Motor – is a type of DC motor that uses permanent
magnets to produce a magnetic field. It has linear torque-speed characteristics.
•
Stepper Motor – is a specialized DC motor that allows discrete positioning
without feedback.
Motor Controller,
A device or group of devices that serve to govern, in a predetermined manner, the
Motor Starter
electrical power delivered to a motor.
Multispeed Motor
An induction motor that can obtain two, three or four discrete (fixed) speeds by th
selection of various stator winding configurations.