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
Upper Display
Range of Setting or Selection
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.
CURRENT DUPLEX RANGE ALGORITHM — used
with Output Algorithm selections "CUR-TI" or "TI-CUR."
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.
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.
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