Mitsubishi Electric MELSEC iQ-R Series User Manual page 22

P control
P control is a control method in which the manipulated value (MV) is determined proportional to the deviation (E) between the
temperature process value (PV) and set value (SV).
■Standard control
The manipulated value (MV) is 50% in the following conditions:
• Temperature process value (PV) = Set value (SV)
• 'CH1 Manual reset amount setting' (Un\G517) has been set to 0 (0.0%) (Page 274 CH1 Manual reset amount setting).
*1
Manipulated value (MV)
100%
50%
0%
*1 A value to be actually output is within the output limiter range set in "Upper limit output limiter" and "Lower limit output limiter" of "Limiter
setting" in "Application Setting."
*2 The set value (SV) is the center of the proportional band (P).
■Heating-cooling control
The manipulated value for heating (MVh) and the manipulated value for cooling (MVc) are both 0% in the following conditions:
• Temperature process value (PV) = Set value (SV)
• 'CH1 Manual reset amount setting' (Un\G517) has been set to 0 (0.0%) (Page 274 CH1 Manual reset amount setting).
Manipulated value
for heating (MVh)
100%
0%
Heating proportional
*1 A value to be actually output is within the output limiter range set in "Upper limit output limiter" and "Lower limit output limiter" of "Limiter
setting" in "Application Setting." (Page 136 Application Setting)
1 FUNCTIONS
20
1.2 Control Method
*2
Set value (SV)
Proportional band (P)
Manipulated value
*1
for cooling (MVc)
Set value (SV)
Cooling proportional
band (Pc)
band (Ph)
Temperature process
value (PV)
*1
Temperature process
value (PV)