172-65710M-04 (SC-F71 Parameters/Functions) 23 Dec 2021
268
[Example] Control is done with the Reference temperature (PV of Input 2) at 100
C,
and the Input 1 is controlled by the Differential temperature.
* Example of Controlled
temperature when the set
value of Differential
temperature input is set as
follows.
Set value of
Differential
temperature
input
Controlled
temperature
-50
C
50
C
0
C
100
C
100
C
200
C
The sensor type used on Input 1 and Input 2 can be different respectively.
[Setting items]
Remote/Local transfer (2-loop control/Differential temperature control) [Operation
transfer mode]
Transfer to Differential temperature control
Input 2_Set value (SV) [Parameter setting mode: Parameter group No. 00]:
Setting Reference temperature (
2.SV
)
Set value of Differential temperature input [Parameter setting mode: Parameter
group No. 00]: Setting Differential temperature (
DSV
)
Select 2-loop control/Differential temperature control in function block No. 58:
Select function for input 2 (Engineering mode)
Other items required for controlling Input 1 and Input 2 (e.g. setting PID values)
The 2-loop control and the Differential temperature control are switchable. For
the detail of the 2-loop control, refer to 8.11 Executing 2-loop control.
Mode transfer
Selection by front key operation
Transfer 2-loop control to Differential temperature control
SC-F71
+
Input 1
+
-
-
Controlled temperature* =
Reference tempe
Set value of Differential
temperature input
Controlled at a
reference temperature
(100 ˚C)
Input 2
R/S
RUN
R/L
2LOOP
setting mode
PV/SV monitor
Monitor & SV
R/L
DIFF
20
.
Operation transfer mode
Remote/Local
transfer
(2 seconds
or more)
0 0
.
Switch to Differential
temperature control
MODE
RUN/STOP
transfer
MODE
or
MODE
+
setting mode
PV/SV monitor
Monitor & SV
280
.
0 0
.
(Several
times)
Measured value (PV) of differential temperature input
Set value (SV) of differential temperature input
Summary of Contents for SC-F71
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Page 18: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 17 Differential temperature control ...
Page 114: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 113 Setting procedure ...
Page 131: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 130 Setting procedure ...
Page 134: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 133 Setting procedure ...
Page 141: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 140 Setting procedure ...
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Page 280: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 279 Setting procedure ...
Page 293: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 292 Checking PID values ...
Page 303: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 302 Setting procedure ...
Page 316: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 315 Setting procedure ...
Page 320: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 319 Setting procedure ...
Page 347: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 346 Operating procedure ...
Page 388: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 387 Setting procedure ...