User's Manual

DCP200 Profile Controller & Recorder - Product Manual
51-52-25-150, Issue 1 – April 2009 Glossary Page 149
Operation Mode
The mode used during normal operation of the instrument. It can be accessed from the Main
Menu, and is the usual mode entered at power-up. The screens shown include a main
screen with bar-graph, a trend view, information about the process, alarms plus optionally,
selection of auto/manual control, control output disabling. Recorder and profiler information
can be displayed if these features are fitted. Up to 50 configuration menu screens can be
defined with the PC software, and will be shown if the Custom Display mode is enabled in
the Display Configuration sub-menu.
Refer to the Operation Mode information in the Configuration & Use section.
Also refer to: Bar-Graphs, Configuration Mode, Custom Display Mode, Display Configuration,
Main Menu, Profiler Setup Menu, Recorder Menu. and Trend Display.
Output Configuration
A sub-menu of Configuration Mode used to adjust the parameters that relate to the Outputs
(Linear output type & scaling, output usage and scaling etc).
Also refer to: Configuration Mode and Linear Output.
Overlap/Deadband
The Overlap/Deadband parameter defines the portion of the primary and secondary
proportional bands over which both outputs are active (called Overlap), or neither is active
(called Deadband). This is adjustable in the range -20% to +20% of the sum of the two
proportional bands. Positive values = Overlap, negative values = Deadband.
Overlap/deadband is applicable if the primary output is set for On-Off control or there is no
Secondary Output. If the Secondary Output is set for On-Off, this parameter has the effect of
moving the On-Off Differential band of the Secondary Output to create the overlap or
deadband. When Overlap/Deadband = OFF, the edge of the Secondary Output Differential
band coincides with the point at which the Primary Output = 0%.
The effect of the Overlap/Deadband parameter is shown in the following table
Settings = -20% to +20%. Default value = 0.
Also refer to: On-Off Differential, On-Off Control, Primary Proportional Band and Secondary
Proportional Band.