Installation manual

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Glossary
Output Function
A function (i.e., Drive OK, Fault) that may be assigned to an output line.
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.
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
Windows®-based software to interface with the Epsilon EP drives, MDS system, and FM-2/3/4 Function Modules.
Radio Button
See Option Button.
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.
RMS
RMS is an acronym for 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.
RPM
Revolutions Per Minute.
Serial Port
A digital data communications port configured with a minimum number of signal lines. This is achieved by passing binary
information signals as a time series of 1’s and Ø’s on a single line.
Travel Limit
The distance that is limited by either a travel limit switch or the software.
Torque
The moment of force, a measure of its tendency to produce torsion and rotation about an axis.
Uploading
The transfer of a complete set of parameters from a drive to a PC.
Vac
Volts, Alternating Current.
Variable
A labeled value that encompasses numeric boolean, input function, and output functions.
Vdc
Volts, Direct Current.