YOKOGAWA UT55A User Manual

8-82
IM 05P01C31-01EN
Setting Details
Parameter
symbol
Name
Display
level
Setting range Menusymbol
CNT Control type EASY
PID: PID control
ONOF: ON/OFF control (1 point of
hysteresis)
ONOF2: ON/OFF control (2 points
of hysteresis)
2P2L: Two-position two-level
control
H/C: Heating/cooling control
S-PI: Sample PI control
BATCH: Batch PID control
FFPID: Feedforward control
CTL
P Proportional band EASY
0.0to999.9%
When0.0%isset,itoperatesas
0.1%.
PID
I Integral time EASY
OFF: Disable
1 to 6000 s
PIDN
PID number
selection
EASY 1 to 8 SP
PIDG.
Number of PID
groups
STD 1 to 8
STM
Sample PI sampled
time
EASY
0 to 9999 s
TUNE
SWD
Sample PI control
time span
EASY
Note1: Even if the parameter D (derivative time) is set, the setting is invalid.
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.
A guideline for STM is LM + TM x (2 to 3). (LM: Equivalent dead time, TM: Equivalent
time constant)
A guideline for SWD is STM/10.
Control
isnot
executedwhenSWD=0.
PIcontrolisalwaysexecutedwhenSWD(≠0)≥STM.
8.2SettingControlType(CNT)

YOKOGAWA UT55A Specifications

General

Brand	YOKOGAWA
Model	UT55A
Category	Temperature Controller
Language	English