Control Techniques Epsilon EP-P Reference Manual page 242

Option Button
See Radio Button.
Opto-isolated
A method of sending a signal from one piece of equipment to another without the usual requirement of
common ground potentials. The signal is transmitted optically with a light source (usually a Light Emitting
Diode) and a light sensor (usually a photosensitive transistor). These optical components provide electrical
isolation.
Output Function
See source. The terminals at which energy is taken from a circuit or device.
Output Line
The actual transistor or relay controlled output signal.
Parameters
User read only or read/write parameters that indicate and control the drive operation. These variables
generally hold numerical data defined in the Setup Views.
PC
Personal Computer.
PE
Protective Earth.
PID
Proportional-Integral-Derivative. An acronym that describes the compensation structure that can be used in
many closed-loop systems.
PLC
Programmable Logic Controller. Also known as a programmable controller, these devices are used for
machine control and sequencing.
PowerTools Pro V#
PowerTools Pro V# is a Windows® based software to interface with the Epsilon EP-P drive.
Radio Button
Also known as the Option Button. In a dialog box, radio buttons are small circles only one of which can be
chosen at a time. The chosen button is black and the others are white. Choosing any button with the mouse
causes all the other buttons in the set to be cleared.
RAM
RAM is an acronym for Random-Access Memory, which is a memory device whereby any location in
memory can be found, on average, as quickly as any other location. Commonly refers to Read-Write
memory, as opposed to Read-Only Memory (ROM, EPROM, EEPROM, Flash). RAM is considered volatile,
because its contents are lost during a power loss.
RMS
Root Mean Squared. For an intermittent duty cycle application, the RMS is equal to the value of steady state
current which would produce the equivalent heating over a long period of time.
ROM
ROM is an acronym for Read-Only Memory. A ROM contains computer instructions that do not need to be
changed, such as permanent parts of the operating system.
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Epsilon EP-P Drive Reference Manual
Revision: A4