YOKOGAWA UTAdvanced UT55A, User Manual

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10-6
IM 05P01C31-01EN
10.3 Setting Limiter to Control Output
Description
Control output high and low limits can be set to restrict the control output to the operation
range between those limits.
The output limiter is prepared for each PID group, and works according to the selected
PID group.
This, however, excludes preset output in STOP mode.
► PID group: 6.4 Adjusting PID Manually
–
5.0
105.0 (%)
Setting range
High limit Low limit
Actual output
variable range
Original setting range
Actual output from the terminal
0
(%)
105.0
Output high limit
Output low limit
Setting Details
Parameter
symbol
Name
Display
level
Setting range Menu symbol
OH
Control output high
limit
Heating-side control
output high limit
(in Heating/cooling
control)
EASY
-4.9 to 105.0%, (OL<OH)
In Heating/cooling control: 0.1
to 105.0% (OL<OH)
PID
OL
Control output low limit
Heating-side control
output low limit (in
Heating/cooling
control)
EASY
-5.0 to 104.9%, (OL<OH), SD:
Tight shut
In Heating/cooling control: 0.0
to 104.9% (OL<OH)
OHc
Cooling-side control
output high limit
EASY 0.1 to 105.0%, (OLc<OHc)
OLc
Cooling-side control
output low limit
EASY 0.0 to 104.9%, (OLc<OHc)
PIDN PID number selection EASY 1 to 8 SP
PIDG. Number of PID groups STD 1 to 8 CTL
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.
Note3: When the setting is low limit ≥high limit, the controller operates as low limit = high limit -1 digit.
Note
When changing the setpoint of the parameter PIDG., if the setpoint of the parameter PIDN
which belongs to the SP menu is larger than that of the parameter PIDG., the PIDN setpoint is
changed to the PIDG. setpoint.