
APPENDIX
E5AK
A--6
CONTROL BLOCK DIAGRAM
J
Standard type
Set point
limiter
LSP
RSP
SP mode
RSP enable
SP ramp
Process
value
Temperature
input
Digital filter
Input shift
Analog input
Digital filter
Scaling
Input type
Control method
Control mode
Control mode
ON/OFF
control
PID control
ON/OFF control
3-position control
PID control
MV change
rate limiter
MV change
rate limiter
MV limiter
MV limiter
Dead band
MV at
PV error
Manual MV
MV at stop
Error
Stop
Manual
Manipulated
variable at
cooling side
Manipulated
variable at
heating side
Error
Stop
Manual
Process/function
Control
Data
Heating
side
Cooling
side
Heating
side
Cooling
side
D
D
Stop
D
D
Stop