YOKOGAWA UP55A - Setting Hysteresis at Time of PID Switch; Switching PID Irrespective of Operation Mode; Switching PID by Contact Input

8-61
IM 05P02C41-01EN
Control Functions
8.4.6 SettingHysteresisatTimeofPIDSwitch
Description
WhenthezonePIDselectionisselected,hysteresisattimeofeachzoneswitchcanbe
set.
Thefollowingshowstheoperationexampleofhysteresisattimeofzoneswitch.
Reference point 1
PV
Hysteresis
0.5% of PV input range span
PID of group 1 PID of group 2 PID of group 1 PID of group 2
SettingDetails
Parameter
symbol
Name
Display
level
Settingrange Menusymbol
RHY
Zone PID switching
hysteresis
STD
0.0 to 10.0% of PV input
range span (EUS)
ZONE
Note1: In Cascade control, the LP2 lamp is lit while the Loop-2 parameter is displayed.
8.4.7 SwitchingPIDIrrespectiveofOperationMode
Description
When the local PID selection is selected (ZON = 5), the PID group set in the local PID
number selection (L.PID) is used, irrespective of the operation mode.
SettingDetails
Parameter
symbol
Name
Display
level
Settingrange Menusymbol
ZON
Zone PID
selection
STD
0: Segment PID selection
1: Zone PID selection (selection
by PV)
2: Zone PID selection (selection
by target SP)
4: Zone PID selection (selection
by SP)
5: Local PID selection
CTL
L.PID
Local PID
number selection
EASY
1 to 8 LOC
PID
PID number
(display only)
EASY
1 to 8 MODE
Note 1: A currently-used PID number is displayed for the parameter PID.
8.4.8 SwitchingPIDbyContactInput
Description
When the local PID selection is selected (ZON = 5), PID can be switching by contact
input.
SettingDetails
► Contact input assignment: 12.1 Setting Contact Input Function
8
8.4SwitchingPID