E5CK
5–25
MV upper limit
MV lower limit
MV change rate limit
Conditions of Use
The control must be advanced PID con-
trol.
Ă• The MV upper limit" and MV lower limit" parameters set the upper and lower limĆ
its of the manipulated variable. When the manipulated variable calculated by the
E5CKĆT controller strays from the upperĆ and lowerĆlimit range, the upper limit or
lower limit set to these parameters is output, respectively.
Ă• 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 perĆsecond value set in this parameter.
This function is disabled when the set value is 0.0".
Ă• MV upper limit
The setting ranges during standard control and heating and cooling control are difĆ
ferent.
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
The manipulated variable at the cooling side during heating and cooling control is
expressed as a negative value.
Ă• MV lower limit
The setting ranges during standard control and heating and cooling control are difĆ
ferent.
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
The manipulated variable at the cooling side during heating and cooling control is
expressed as a negative value.
Ă• MV change rate limit
Setting Range
Unit Default
0.0 to 100.0 %/S 0.0
ĂRelated description
4.2 Operating Condition Restrictions/Manipulated variable restrictions (page 4Ć7)
Level 2 Mode
Function
Setting
See