West Control Solutions ProVU 4 - Manual (Page 142)

ProVU4 Controller, Profiler & Recorder/Controller - Product Manual
59407, Issue 1 – March 2008 Glossary Page 141
Display Resolution
The maximum number of digits that can be displayed and/or the maximum number of
decimal places. Numeric values (e.g. process variable, setpoints etc) are limited to no more
than 5 digits.
The maximum number of decimal places is selectable from 0 to 3 places, but the overall 5-
digit limit means that larger values may not display the full number of decimal places. For
example, values >99.999 can have no more than 2 decimal places(e.g. 100.00).
Also refer to: LSD
Engineering Units
The Process Variable and Setpoint displays can assigned a engineering units to describe the
type of parameter connected to the process input. The engineering units for linear inputs can
be: °C; °F; °K; bar; %; %RH; pH; psi or none. For temperature inputs (RTD or
Thermocouples) they can be °C; °F or °K.
Also refer to: Linear Input, Process Input, Process Variable RTD and Thermocouple
Ethernet
A networking technology for local area networks (LANs). Used to link computers and other
equipment in order to control or share data and control such devices. If fitted with an
Ethernet serial communications module in Option Slot A, this instrument can connect to a
Modbus TCP master device over a wired Ethernet LAN.
Also refer to: Modbus TCP and Serial Communications
Indicator
An instrument that can display process values, but does not provide any control features.
Typically, alarm outputs are available that will activate at preset PV values.
Also refer to: Controller, Limit Controller and Process Variable.
Input Configuration
A sub-menu of Configuration Mode, used to adjust the parameters that relate to the process
and auxiliary inputs (type, engineering units, decimal position, scaling, offset, filter auxiliary
input settings etc.).
Also refer to: Auxiliary Input, Configuration Mode and Process Input.
Input Filter Time Constant
This parameter is used to filter out extraneous impulses affecting the process variable value.
The filtered PV is used for all PV dependent functions (display, control, alarm etc).
Settings = OFF or 0.1 to 100.0 seconds.
Default value = 2.0 seconds.
Also refer to: Process Variable.
Input Range
This is the overall process variable input range and type as selected by the Process Input
Type parameter. This range can be scaled by the Scale Range Upper & Lower Limits.
Also refer to: Input Span, Process Input, Scale Range Lower Limit and Scale Range Upper
Limit.