Performing Manual Control; Manual Operation - Omron E5CN-HT User Manual

Performing Manual Control

Initial Setting Level
Input Type
in-t
5
Operation Level
PV/SP
C
25.0
100.0

4-12 Performing Manual Control

4-12-1 Manual Operation

Standard Models
Position-proportional
Models
126
15. Press the O Key for at least one second to move from the advanced
function setting level to the initial setting level.
16. Press the O Key for at least one second to move from the initial setting
level to the operation level.
• With standard models, the MV is manipulated directly. With position-pro-
portional models, the MV is manipulated through the amount of valve
opening or by parameter settings.
• The manipulated variable can be set in manual mode if the PV/MV param-
eter is displayed in the manual control level. The final MV used in auto-
matic mode will be used as the initial manual MV when moving from
automatic mode to manual mode. In manual mode, the change value will
be saved immediately and reflected in the actual MV.
• Manual operation can be used only for PID control.
• The automatic display return function will not operate in manual mode.
• Balanceless-bumpless operation will be performed for the MV when
switching from manual operation to automatic operation. (See note.)
• If a power interruption occurs during manual operation, manual operation
will be restarted when power is restored using the same MV as when
power was interrupted.
• Switching between automatic and manual operation is possible for a max-
imum of one million times.
The overall manual operation is illustrated in the following figure.
MV (%)
0
MV switched
Manual
Automatic
• When floating control is used or when the Direct Setting of Position Pro-
portional MV parameter is set to OFF:
• Pressing the U Key turns ON the open output, and pressing the D
Key turns ON the close output.
Balanceless-bumpless
OFF ON
Power in-
terrupted
Section 4-12
Time