6-5
PPC Manual Revision 1
Chapter 6: Control Mode Settings
n
Cascade Primary-loop Control Function Block Diagram
Target setpoints 1 to 8
COM
*1
Output limiter
Manual operation
Manual preset output
Input error preset output
Preset output
Output tracking input
Output tracking switch (Tracking at ON)
AUTO (ON)/MAN (OFF) switch
STOP (ON)/RUN (OFF) switch
LOCALREMOTE
AUTO
When sensor
burnout occurs
Normal
MAN
ONOFF
RUN
STOP
SP ramp rate
SP limiter
PV input
(from Loop-2 controller)
Remote auxiliary analog
input (if equipped)
DI16PV RSP
Input type
Input unit
Input range/scale
Analog input bias
Square root extraction
Analog input filter
Input type
Input unit
Input range/scale
Analog input bias
Square root extraction
Analog input filter
PV input bias
PV input filter
Ratio bias computation
Contact inputs
Output limiter
Output limiter
A.BS
A.FL
10-seg. linearizer approx./bias
BS
FL
CNT ALG
UPR, DNR TMU
SPNO SP
R/L
SPH, SPL
RFL
A.SR A.LC
UNIT
IN
RH, RL SDP SH, SL
A.BS
A.FL
A.SR A.LC
UNIT
IN
RH, RL SDP SH, SL
EPO
OH, OL
OH, OL OLMT
OH, OL
PO
S/R
MPON
Current
(to Loop-2 controller)
Current
OUT RET AL3AL2AL1
PMD
OU.H OU.L
An, Bn
Split computation
10-seg. linearizer approx./bias
RET.H RET.L
PMD An, Bn
Split computation
10-seg. linearizer approx./bias
RET retransmission output
RTS
Alarm
DI3DI2DI1
A/M
Control computation
(from Loop-2 controller)
PMD An, Bn
10-seg. linearizer approx./bias
PMD An, Bn
10-seg. linearizer approx./bias
PMD An, Bn
No function
is assigned
to DI3.
Terminal Parameter Function
Analog signal Contact signal Front panel key
Legend
Alarm 1
(PV high limit)
Alarm 2
(PV low limit)
FAIL
(to Loop-2 controller)
PV display SP display
Communication
*1: RS-485, Ethernet (if equipped)
DI16 is equipped on models with remote
auxiliary analog input RSP