2-Degree-Of-Freedom Advanced Pid Control (Disable Tracking For Primary Loop) (M+M_2Pidh_) - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

12.10
2-degree-of-freedom Advanced PID Control
(Disable Tracking for primary loop) (M+M_2PIDH_)
M+M_2PIDH_
This FB performs two-degree-of-freedom PID control combining the functions of M+P_IN, M+P_PHPL, M+P_2PIDH_, and
M+P_OUT3_ into a single FB with PV/MV correction.
FBD/LD
M+M_2PIDH_
PVN MVN
CASIN CASOUT
PV_CMPIN CASOUT_T
PVD_CMPIN PV_CMPOUT
MVD_CMPIN MVD_CMPOUT
MVD_GAININ MV_CMPOUT
MV_CMPIN
MV_TRKIN
Applicable tag type
2PIDH
Control mode
MAN AUT
 
*1 Transition to CASDR is possible.
■Block diagram
MCHG
function
(M+P_MCHG)*
Analog
PVN
input
(PV input)
(M+P_IN)*
PVCMP_EN
(PV compensation
PV_CMPIN
execution condition)
(PV compensation value)
PVDCMP_EN
(ΔPV gain compensation
PVD_CMPIN
executioncondition)
(ΔPV compensation value)
High/low limit
Control
(LIMIT)
CASIN
MVDCMP_EN
(Primary loop SV input)
(ΔMV compensation
MVD_CMPIN
execution condition)
MVDGAINCMP_EN
(ΔMV compensation value)
(ΔMV gain correction
MVD_GAININ
execution condition)
(ΔMV correction gain value)
MV_CMPIN
(MV compensation input)
MV_TRKIN
(MV tracking input)
*(M+P_ ) indicates the main structure member tag access FB which is the main component of each function.

12.10 2-degree-of-freedom Advanced PID Control (Disable Tracking for primary loop) (M+M_2PIDH_)

*1
CAS

M+M_2PIDH_
Temperature/ Engineering
Square root
Broken line
Pressure value
extraction
approximation
correction conversion
(M+P_SQR)* (M+P_FG)*
(M+P_TPC)* (M+P_ENG)*
High/low limit
2-degree-of-freedom
alarm check Advanced PID control
(M+P_PHPL)* (M+P_2PIDH_)*
CMV

PV ΔPV
Lead-lag
compen-
compensation compen-
(M+P_LLAG)*
sation sation
ΔMV compensation ΔMV gain correction
+,
×
Replace-
ment
CSV

PV_CMPOUT
(Output for PV
compensation)
Inverse
engineering
value
conversion
(M+P_IENG)*
MVD_CMPOUT
(Output for ΔMV
compensation)
MV_CMPOUT
(Output for MV
compensation)
Output
MVN
processing-3
with mode
(Output to module)
switching
(M+P_OUT3_)*
CASOUT
(Cascade MV output
without tracking)
CASOUT_T
(Cascade MV output
with tracking)
12 LOOP TAG
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