Configuration
Function Prompt Selections or
Parameter
Lower Display
Range of Setting
Upper Display
Definition
TIME D
TIME DUPLEX—This output algorithm uses Digital
Outputs 1 and 2 for Duplex Time Proportional
Control. The outputs are updated per the Loop
sampling rate selection. Time Proportional Output
has a resolution of 4.44 msec. Cycle Time is
adjustable from 1 second to 120 seconds.
CUR D
CURRENT DUPLEX is similar to current simplex but
uses a second current output. The second output is
usually scaled so that zero and span correspond
with 0 % and 50 % output (cool zone). When the
output is 0 % to 50 %, the controller uses tuning
parameter set #2, when the output is 50 % to 100 %
it uses set #1.
ATTENTION Other prompts affected: OUT RNG
CUR TI
CURRENT/TIME DUPLEX is a variation of duplex
with current active for 0 % to 50 % output (tuning set
2) and time is active 50 % to 100 % output (tuning
set 1).
Relay controls heat, current controls cool.
ATTENTION Other prompts affected: OUT RNG
TI CUR
TIME CURRENT DUPLEX is similar to CUR TI
except that current is active for 50 % to 100 % and
time is active for 0 % to 50 %.
Relay controls cool, current controls heat.
ATTENTION Other prompts affected: OUT RNG
OUT RNG
CURRENT DUPLEX RANGE ALGORITHM — Used
with Output Algorithm selections CUR D, CUR TI, or
TI CUR.
50 PCT
CURRENT DUPLEX RANGE (SPLIT)—This setting
should be used for Relay/Current and Current/Relay
Duplex Outputs. It can also be used for Current
Duplex when an Auxiliary Output board is present.
This enables the normal control current output to
provide heat control and the auxiliary current output
to provide cool control. To enable this:
• AUX OUT in the Options Set Up group must be
selected for Output.
• The Auxiliary Current Output is scaled as desired
for 0-50 % controller output.
• Deadband for this configuration only applies to the
Current Output. The Auxiliary Output must have
the Deadband scaled in.
FOR EXAMPLE:
12/04 UDC3200 Universal Digital Controller Product Manual 61
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