Omron E5AN-H User Manual page 179

Position-proportional Control
Position-proportional Dead Band and Open/Close Hysteresis
PV Dead Band
Valve Opening Monitor
158
The interval during which the valve output is held (for the ON and OFF switch-
ing points for the open output and closed output) is set by the Position Propor-
tional Dead Band parameter, and the hysteresis is set by the Open/Close
Hysteresis parameter.
Parameter
Position Proportional
Dead Band
Open/Close Hysteresis
ON
OFF
−100%
When the process value (PV) is within the PV dead band, control is executed
as if the process value is equal to the set point for the current bank to prevent
unnecessary outputs when the process value is in the vicinity of the set point.
Parameter
PV Dead Band
SP
Valve opening can be monitored by connecting a potentiometer. The motor
must be calibrated after the potentiometer is connected.
Parameter
Valve Opening Monitor
Note If no potentiometer is connected or if a potentiometer input error oc-
curs, "---- " will be displayed.
With the E5AN/EN-H, valve opening can also be monitored on the PV/SP/MV
(Valve Opening) Screen.
Setting range
Position proportional (closed): 0.1 to
10.0
Position proportional (floating): 0.1 to
10.0
0.1 to 20.0
Open/close positional-
proportional hysteresis
Dead band
MV − Valve opening
0
Setting range
0 to 32400
Setting range
−10.0 to 110.0
Section 4-24
Unit Default
% 4.0
2.0
% 0.8
100%
Unit Default
EU 0.0
PV dead band
Unit Default
% ---