CHAPTER 5 PARAMETERS
E5CK
5--18
MV upper limit
MV lower limit
MV change rate limit
Conditions of Use
The control must be advanced PID con-
trol, and ST must be set to OFF.
•
The “MV upper limit” and “MV lower limit” parameters set the upper and lower lim-
its of the manipulated variable. When the manipulated variable calculated by the
E5CK controller is outside of the upper-and lower-limit range, the upper limit or
lower limit set to these parameters is output, respectively.
•
The “MV change rate limit” parameter sets the maximum permissible change width
per second of the manipulated variable. If a change in the manipulated variable
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.
The “MV change rate limit” function is disabled when this parameter is set to “0.0”.
•
MV upper limit
The setting ranges during standard control and heating and cooling control are dif-
ferent. Also, the manipulated variable at the cooling side during heating and cooling
control is expressed as a negative value.
Control Method
Setting Range
Unit
Default
Standard
MV lower limit +0.1 to 105.0
%
105.0
Heating and cooling
0.0 to 105.0
%
105.0
•
MV lower limit
The setting ranges during standard control and heating and cooling control are dif-
ferent. Also, the manipulated variable at the cooling side during heating and cooling
control is expressed as a negative value.
Control Method
Setting Range
Unit
Default
Standard
-5.0 to MV upper limit -0.1
%
-5.0
Heating and cooling
-105.0 to 0.0
%
-105.0
•
MV change rate limit
Setting Range
Unit
Default
0.0 to 100.0
%
0.0
F
Related article
4.2 Operating Condition Restrictions (page 4-4)
Level 2 Mode
Function
Comment
See
