YOKOGAWA UTAdvanced UP55A, User Manual

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10-19
IM 05P02C41-01EN
Output (Control and Retransmission) Functions
10.12 Setting Preset Output Value
10.12.1 Setting Output Value in RESET Mode (Preset Output)
Description
Preset output becomes the output when the operation mode is switched from RUN to
RESET.
The preset output is not limited by the output high and low limits.
The preset output is prepared for each PID parameter group, and works according to the
selected PID parameter group.
Preset output
RUN state RESET state
Time
0%
50%
100%
Control output
Point where the controller
enters RESET state
The preset output (fixed) applies
according to the preset output.
Control output obtained by
computation based on
deviation between SP and PV.
► Output limiter: 10.3 Setting Limiter to Control Output
Preset Output in Heating/cooling Control
The preset output can be set for both of the heating and cooling sides.
The computation starts from the value of 50% of internal computed value (value before
split into heating- and cooling-side outputs) when the operation mode is switched from
RESET to RUN.
Setting Details
Parameter
symbol
Name
Display
level
Setting range Menu symbol
PO
Preset output
Heating-side preset
output (in Heating/
cooling control)
EASY
In RESET mode, fixed control
output can be generated.
In Position proportional
control, Valve opening can
be set;
-5.0 to 105.0%
PID
POc
Cooling-side preset
output
EASY
Note1: The PID number (1 to 8, R) is displayed on Group display while each parameter is displayed.
Note2: In Cascade control, the LP2 lamp is lit while the Loop-2 parameter is displayed.
For ON/OFF output (ON/OFF output or ON/OFF output in Heating/cooling control), 0.0%
is output when the setting value is 0.0% or less and 100.0% is output when 0.1% or
more.
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