Configuration Parameter Definitions
Control Parameters Set Up Group
Release M DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual 91
April 2017
4.6 Control Parameters Set Up Group
Introduction
The functions listed in this group deal with how the DR4500A will control the process including: number
of tuning parameter sets, setpoint source, ratio, bias, tracking, power-up recall, setpoint limits, output
direction and limits, deadband and hysteresis, control algorithm, output algorithm, and the current duplex
range. There are two control groups.
Control group prompts
Table 4-5 lists all the function prompts in the Control 1 or Control 2 set up groups and their definitions.
Table 4-5 Control 1 or 2 group definitions
Upper Display
Range of Setting or Selection
CONTROL 1 — allows you to enable or disable control
loop #1.
NUMBER OF TUNING PARAMETER SETS — this
selection lets you choose one or two sets of tuning
constants (gain, rate, and reset).
ONE SET ONLY — only one set of tuning parameters is
available. Configure the values for:
Gain (proportional band)
Rate
Reset Time
Cycle Time (if time proportional is used)
TWO SETS KEYBOARD SELECTABLE — two sets of
tuning parameters can be configured and can be
selected at the operator interface.
Press LOWR DISP key until you see "PID SET1" or
“PID SET2” to switch between sets. Configure the
values for:
Gain, Rate , Reset, Cycle Time
Gain #2, Rate #2, Reset #2, Cycle #2 Time
TWO SETS PV AUTOMATIC SWITCHOVER — when
the process variable is GREATER than the value set at
prompt "SW VALUE" (Switchover Value), the recorder
will use Gain, Rate, Reset, and Cycle Time. The active
PID SET can be read in the lower display.
When the process variable is LESS than the value
set at prompt "SW VALUE," the recorder will use
Gain #2, Rate #2, Reset #2, and Cycle #2 Time. The
active PID SET can be read in the lower display.
Other prompts affected: SW VALUE
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