Adjusting Control Operation; Changing The Set Point; Manual Operation - Omron E5AK User Manual

CHAPTER 3 BASIC OPERATION

3.7 Adjusting Control Operation

J Changing the set
point
Setting Example
J Manual operation
F Standard type
Process value
Manipulated
variable
Bar graph [MANU] LED
Balance-less,
Bump-less Opera-
tion
3--14
• You can change the set point in the "set point" parameter (level 0
mode).
• However, note that you cannot change the set point when the "securi-
ty" parameter (protect mode) is set to "6".
• To change the set point, press the
desired value. If you leave the setting for two seconds, the set point is
updated to the new setting.
In the following example, let's change the temperature set point from
"60_C" to "50_C".
(1) Select the PV/SP monitor display.
(2) Press the key to change the setting to "50.0: 50.0_C".
• On 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 for 1 second minimum the
controller enters the manual mode.
• The process value is displayed on the No.1 display, and the manipu-
lated variable is displayed on the No.2 display. The manipulated vari-
able (heat) is also displayed on the bar graph in 10% increments.
• To change the manipulated variable, press the
two seconds, the manipulated variable is updated to the new setting.
• Other modes cannot be selected while in the manual mode. To select
other modes, press for 1 second minimum the
mode is quit.
• The automatic return of display function does not work while in the
manual mode.
• When switching between manual and auto operation, the manipu-
lated variable is subject to balance-less, bump-less operation.
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.
or keys to select the
key. The
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or keys. After
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