GS 04L53B01-31EN
8
All Rights Reserved. Copyright © 2017, Yokogawa Electric Corporation 2017.06.26-00
SP limit
(Thermocouple)
GX90UT module
Cascade Control Block Diagram
(DC voltage/standard
signal)
(Thermocouple/
RTD)
(AI1 used)
(LOCAL)
Sensor burnout 1
AUTO/MAN
STOP
Normal
CASCADE
RUN
(CASCADE) (AUTO/MAN)
(Not OUT)
(OUT2 selected)
(REM/PROG/RESET)
Primary PV input
Setup item
Module terminal
PID channel
Legend
Secondary PV input
(Recorder option /PG is required.)
Control output
GX/GP screen
GX/GP Web app
GM Web app
Select with SP group number
Select with SP group number
During program
operation, the SP
rate-of-change limiter
does not work.
(EXPV1 used)
RJC
Scaling
Square root extraction
Input type
Measuring range/unit
Burnout detection
Input linearizer
Bias
Filter
Overrange detection
Control PV range/unit
Control overrange detection
Input error preset output 1
Output limiter 1
SP2
Control alarm function
Control alarm function
AI1
(TC)
(DC voltage/standard
signal)
(Thermocouple/
RTD)
AO2AO1
RJC
Scaling
Square root extraction
Input type
Measuring range/unit
Burnout detection
Input linearizer
Bias
Filter
Overrange detection
AI2
PV1
OUT1
SP1
EXPV1 selection
SP limit
Output format setting
(AI2 used) (EXPV2 used)
EXPV2 selection
Preset output 1
Sensor burnout 2
MAN
STOP
Normal
CASCADE/AUTO
RUN
Input error preset output 2
Manual output 2
Output limiter 2
Preset output 2
PID1
computation
Control PV range/unit
Control overrange detection
PV2
OUT2
SP2
PID2
computation
Program operation
SP rate-of-change limiter
Split computation
AO2
(Not OUT)
Output format setting
Retransmission output
Split computation
AO1
AI1 AI2
DO1 to DO8
DI1 to DI8
Output limiter 2
SP limit 1
AO1: PV/SP/OUT/EXPV can be output as analog signals through configuration.
DO1 to DO8: Alarm output and status output are possible through configuration.
DI1 to DI8: Event input is possible through configuration.
SP limit
RSP1 selection
Ratio bias
Filter
(REM)
(PROG/RESET)
During program operation, RSP1
is set to the SP of program
operation.
DI1
DI8
to
DO1
DO8
to
DO1
DO8
to
Retransmission output
Scaling
Scaling
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