Omron E5AK PROGRAMMABLE TYPE User Manual page 60

CHAPTER 3 BASIC OPERATION
J Manual operation
F Standard type
Manipulated variable (%)
F Position-propor-
tional type
Balance-less,
Bump-less Opera-
tion
3--24
• On a standard type controller, the manipulated variable is controlled,
and on a position-proportional type controller, the valve opening is
controlled.
• To set manual operation and manually set the manipulated variable
or the valve opening, press the
for 1 second minimum. Then the controllers enters the manual mode.
To quit the manual mode, press the
taneously for 1 second minimum. The controller enters the level 0
mode without entering the menu display.
• Though the control shifts to manual operation if the controller is set
to the manual mode during program operation, the program ad-
vances. When program operation is started in the manual mode, pro-
gram also advances.
• In the manual mode, the automatic return of display mode does not
work.
• The process value is displayed on the No.1 display, and the manipu-
lated variable is displayed on the No.2 display.
• To change the manipulated variable, press the
two seconds, the manipulated variable is updated to the new setting.
• When switching between manual and auto operation, the manipu-
lated variable is subject to balance-less, bump-less operation.
• If the power is interrupted during manual operation, manual opera-
tion is resumed at the manipulated variable that was active at power
interruption when the power is reset.
0
Manipulated vari-
able switched
Manual
Auto
+
• When a potentiometer is connected to the controller, the process value
is displayed on the No.1 display, and the valve opening is displayed on
the No.2 display.
• When you press the
press the
To prevent sudden changes in the manipulated variable when switching between
manual and auto operation, operation is resumed using the value that was active
immediately before operation was switched, and the value is brought gradually
closer to the value immediately after operation was switched.
key and
Balance-less,
bump-less points
OFF ON
Power inter-
ruption
key, the open side becomes ON. When you
key, the close side becomes ON.
key simultaneously
key and key again simul-
or keys. After
+
Time