YOKOGAWA UT55A - Two-Position Two-Level Control

8-78
IM 05P01C31-01EN
8.2.4 Two-positionTwo-levelControl
Description
Two-position two-level control outputs the ON signal and OFF signal for the target
setpoint (SP) of the main setting and the sub-target setpoint (SP + SUB) of the sub-
setting.
The sub-setting is set as a deviation from the main setting.
Hysteresis can be set in the vicinity of the on/off output operating point
► Two-positiontwo-levelcontrol:8.1.1Single-loopControl,Single-loopHeating/coolingControl,
Single-loop Position Proportional Control, and Single-loop Two-position Two-level Control
Mainsetting=DirectandSub-setting=Direct
OFF
ON
Output
PVMain SP (SP)
Hysteresis (HYS) Hysteresis (SU.HY)
Sub-SP (SP+SUB)
Mainsetting=ReverseandSub-setting=Direct
OFF
ON
Output
PVMain SP (SP)
Hysteresis (HYS) Hysteresis (SU.HY)
Sub-SP (SP+SUB)
Mainsetting=DirectandSub-setting=Reverse
OFF
ON
Output
PVMain SP (SP)
Hysteresis (HYS) Hysteresis (SU.HY)
Sub-SP (SP+SUB)
Mainsetting=ReverseandSub-setting=Reverse
OFF
ON
Output
PVMain SP (SP)
Hysteresis (HYS) Hysteresis (SU.HY)
Sub-SP (SP+SUB)
8.2SettingControlType(CNT)