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Configuration Parameter Definitions
Control Parameters Set Up Group
Release M
DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
99
April 2017
Lower Display
Prompt
Upper Display
Range of Setting or Selection
Parameter Definition
OUT1ALG
(continued)
TI CUR
RELAY/CURRENT DUPLEX (RELAY = COOL)
is
similar to "CUR-TI" except that current is active for 50 to
100% and relay is active for 0 to 50%.
Other prompts affected: "4-20 RNG,"
"DEADBAND"
Controller #1 uses Relay 4 and overrides control of
relay by Alarm 4. Controller #2 uses Relay 6 and
overrides control of relay by Alarm 6.
4-20 RNG
CURRENT DUPLEX RANGE ALGORITHM
— used
with Output Algorithm selections "CUR-TI" or "TI-CUR."
50 PCT
CURRENT DUPLEX RANGE (SPLIT)
enables the
normal control current output to provide its full range for
50% output change.
If “CUR-TI” duplex was selected, the current output
provides cool control.
100PCT
CURRENT DUPLEX RANGE (FULL)
enables the
normal control current output to provide duplex heat
control over 0-100% output change and the relay output
to provide cool control.
Repeat this procedure for CONTROL 2 configuration.