Omron E5AK PROGRAMMABLE TYPE User Manual page 117

MV upper limit
MV lower limit
MV change rate limit
• The "MV upper limit" and "MV lower limit" parameters set the upper and lower
limits of the manipulated variable. When the manipulated variable calculated by
the E5AK-T controller strays from the upper- and lower-limit range, the upper
Function
limit or lower limit set to these parameters is output, respectively. However, note
that these parameters are disabled during position-proportional control.
• The "MV change rate limit" parameter sets the maximum permissible change
width per second of the manipulated variable (on the position-proportional con-
trol, valve opening). If a change in the manipulated variable (on the position-pro-
portional control, valve opening) causes this parameter setting to be exceeded, the
calculated value is reached while changing the value by the per-second value set in
this parameter.
This function is disabled when the set value is "0.0".
• MV upper limit
The setting ranges during standard control and heating and cooling control are
different.
Setting
Control Method
Standard
Heating and cooling
The manipulated variable at the cooling side during heating and cooling control is
expressed as a negative value.
• MV lower limit
The setting ranges during standard control and heating and cooling control are dif-
ferent.
Control Method
Standard
Heating and cooling
The manipulated variable at the cooling side during heating and cooling control is
expressed as a negative value.
• MV change rate limit
Setting Range
0.0 to 100.0
F Related description
4.2 Operating Condition Restrictions/Manipulated variable restrictions (page 4-7)
See
Conditions of Use
The control must be advanced PID con-
trol.
Setting Range
MV lower limit +0.1 to 105.0
0.0 to 105.0
Setting Range
-5.0 to MV upper limit -0.1
-105.0 to 0.0
Unit Default
%/S 0.0
Level 2 Mode
Unit Default
% 105.0
% 105.0
Unit Default
% -5.0
% -105.0
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