Section 8 Setting data
8-32
Setting data
• MV lower limit
The setting range differs for standard control and heating/cooling
control.
The cooling MV of heating/cooling control is expressed as a
negative value.
• The MV limit function does not operate on a position proportional
type during floating control, and thus the setting is not effective in
this case.
The following MVs take precedence over the MV limits:
• Manual MV
• Manipulated variable at stop
• MV at PV error
● Related information
"5.3 Output adjustment functions ■ MV limit" (P.5-16)
When using automatic selection of PID sets, use this setting to set an upper limit for each PID set.
•
Set the automatic selection range upper limit for PID Set Nos. 1 to 8.
• Note that the limit for PID Set 8 is fixed at 110% of the sensor setting
range, and thus does not need to be set.
• This value is applied to the PV (present value) or DV (deviation) set
in "PID set automatic selection data". The initial setting is "PV".
● Related information
"5.2 Control functions ■ Banks" (P.5-9)
"5.2 Control functions ■ PID sets" (P.5-12)
● Related setting data
"PID set automatic selection data" (Expansion control setting level)
(P.8-74)
Setting
Setting data Setting range Units
Default value
MV upper limit
Standard control:
MV lower limit + 0.1 to 105.0
%100.0
Heating/cooling control:
0.0 to 105.0
%100.0
MV lower limit
Standard control:
-5.0 to MV upper limit - 0.1
%0.0
Heating/cooling control:
-105.0 to 0.0
%0.0
Reference
Reference
PID∗ Automatic selection range upper limit
(
∗
: 1 to 8)
∗ .aut
CH
l.pid
Function
Setting
Setting data Setting range Units
Default value
Automatic selec-
tion range upper
limit
-19999 to 99999
EU 1450.0
Reference
Reference