CHAPTER 5 PARAMETERS
E5EK
5--22
MV upper limit
MV lo wer limit
MV chan g e 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
limits of the manipulated variable. When the manipulated variable calculated by
the E5EK controller is outside of the upper-and lower-limit range, the upper 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” p arameter sets the maxi mum 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. 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
different. 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 R estrictions/Manipulated variable restrictions (page 4-5)
Level 2 Mode
Function
Comment
See
To Next Page
Loading...
Need help?
General
