Section 5 Functions and Operations
5.3 Output adjustment functions
■ MV limit
Upper limit value of
MV limit
1.ol-h
1
100.0
l.pid
Lower limit value of
MV limit
1
1.ol-l
0.0
l.pid
5-16
• Upper and lower limits can be applied to the output of the calculated
MV.
• When using ON/OFF control, the MV will be the MV upper limit
when output is ON and the MV lower limit when output is OFF.
• The MV limit function does not operate when floating control is
selected on a position proportional type.
• The following MVs take precedence over the MV limit function.
Manual MV default
MV at stop
MV at PV error
• The "MV upper limit" and "MV lower limit" can also be set in each
PID set.
Output
Upper limit value of
MV limit
Lower limit value of
MV limit
• In the case of heating/cooling control, overall upper and lower limits
are set for heating and cooling. (Separate limit settings are not
possible.)
Output
Heating side MV
Lower limit value of
MV limit
Upper limit value of
MV limit
100%
0%
Cooling side MV