West Control Solutions Pro-EC44 - Manual (Page 220)

Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-1 October 2013 Page 213
Display Configuration
A sub-menu of configuration mode used to adjust the display (colour & contrast) and to
enable access to selected parameters from operation mode. These are: Profile Control;
Recorder Start/Stop; Recorder Status; Loop 1 & 2 Setpoint Select; Loop 1 & 2 Auto/Manual
Select; Loop 1 & 2 Control Enable/Disable; Loop 1 & 2 Trend View; Loop 1 & 2 Setpoint
Ramp Rate. It also has settings for language selection, to enable the custom menus or to
make operation mode read-only.
Also refer to: Configuration Mode; Control Enable; Custom Display Mode; Display Language;
Manual Control; Operation Mode; Profile Control; Setpoint Ramp Rate; Recorder; Setpoint
Select and Trend Display.
Display Languages
The instrument supports two languages. The main language is English. The alternate
language is chosen at time of order, but can also be changed by downloading a new file via
the PC software. Supported languages include English, French, German, Italian and
Spanish.
Also refer to: Display Configuration; Operation Mode; Main Menu and PC Software.
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 reduce the number of decimal places shown. For
example, values >99.999 will show no more than 2 decimal places (e.g. 100.00).
Also refer to: LSD.
Effective Setpoint
- Refer to Actual Setpoint.
Engineering Units
The Process Variable and Setpoint displays can assigned engineering units to describe the
signals connected to the process inputs. 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 share data or control such devices. If fitted with an Ethernet
communications module in option slot A, this instrument can connect as a slave to a Modbus
TCP master device via a wired Ethernet LAN connection.
Also refer to: Modbus TCP and Serial Communications.
Gain Scheduling
Gain scheduling bumplessly switches between pre-set PID values automatically at
successively higher setpoint or process values. This allows optimal control across a wide
range of process conditions, or if the controller is used in several different applications. It is
especially useful if the process conditions change significantly during use, such as a process
that becomes exothermic as the temperature rises.
Also refer to: Bumpless Transfer; PID; PID Sets; Process Variable and Setpoint.