172-65710M-04 (SC-F71 Parameters/Functions) 23 Dec 2021
232
If the Undershoot suppression factor is set too small, the undershoot
function acts excessively and prevents the Measured value (PV) from
reaching the Set value (SV). As a result, the PV stabilizes at an offset or
approaches the set value very slowly, preventing normal control.
In this event, change the setting for the Undershoot suppression factor to
a slightly higher value.
Parameter setting
Input 1_Proportional band [heat-side] [Parameter Setting Mode: Parameter
group No. 51 (
Pn51
)]
Parameter symbol
Data range
Factory set value
1.
U
1
P
TC/RTD inputs:
0 (0.0, 0.00) to Input 1_Input span (Unit:
C [
F])
(When Control with PV select: 0 to PV select input span)
[Varies with the setting of the Decimal point position.]
Voltage (V)/Current (I) inputs:
0.0 to 1000.0% of Input 1_Input span
(When Control with PV select: 0.0 to 1000.0% of PV select
input span)
0 (0.0, 0.00): ON/OFF action
NOTE: 0 (0.0, 0.00) cannot be set when a setting
“Temperature control operation [MC-(V)COS(R)] is
selected in Input 1_control action.
TC/RTD inputs: 30
V/I inputs: 3.0
To display
“Input 1_Proportional band [heat-side]”, choose a setting other than
“3 to 7 (Pressure control operation [MC-(V)COS(R)])” in Function block No.51:
Input 1_Control action (Engineering mode).
Input 1_Proportional band [cool-side] [Parameter Setting Mode: Parameter
group No. 56 (
Pn56
)]
Parameter symbol
Data range
Factory set value
1.
U
P c
TC/RTD inputs:
1 (0.1, 0.01) to Input 1_Input span (Unit:
C [
F])
(When Control with PV select: 1 to PV select input span)
[Varies with the setting of the Decimal point position.]
Voltage (V)/Current (I) inputs:
0.1 to 1000.0% of Input 1_Input span
(When Control with PV select: 0.1 to 1000.0% of PV select
input span)
TC/RTD inputs: 30
V/I inputs: 3.0
To
display “Input 1_Proportional band [cool-side]”, choose “Heating/Cooling PID
control” in Function block No.51: Input 1_Control action (Engineering mode).
Additionally, a value other than 0 must also be entered in the Input 1_
Proportional band [heat-side] in the same memory area.
Input 1_Integral time [heat-side] [Parameter Setting Mode: Parameter group
No. 51 (
Pn51
)]
Parameter symbol
Data range
Factory set value
1.
U
1
I
0 to 3600 seconds, 0.0 to 3600.0 seconds or 0.00 to 360.00
seconds
0 (0.0, 0.00): PD action
[Varies with the setting of the Integral/Derivative time decimal
point position.]
240
To display
“Input 1_Integral time [heat-side]”, choose a setting other than “3 to 7
(Pressure control operation [MC-
(V)COS(R)])” in Function block No.51: Input 1_
Control action (Engineering mode). Additionally, a value other than 0 must also
be entered in the Input 1_Proportional band in the same memory area.
NOTE
Содержание SC-F71
Страница 16: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 15 2 loop control Cascade control Control with PV select ...
Страница 17: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 16 ...
Страница 18: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 17 Differential temperature control ...
Страница 114: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 113 Setting procedure ...
Страница 131: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 130 Setting procedure ...
Страница 134: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 133 Setting procedure ...
Страница 141: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 140 Setting procedure ...
Страница 153: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 152 Setting procedure ...
Страница 158: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 157 Setting procedure ...
Страница 168: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 167 Setting procedure ...
Страница 172: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 171 Setting procedure ...
Страница 175: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 174 Setting procedure ...
Страница 180: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 179 Setting procedure ...
Страница 185: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 184 ...
Страница 199: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 198 Setting procedure ...
Страница 207: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 206 Setting procedure ...
Страница 236: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 235 Setting procedure Selecting Heating Cooling PID control ...
Страница 249: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 248 Setting procedure ...
Страница 280: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 279 Setting procedure ...
Страница 293: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 292 Checking PID values ...
Страница 303: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 302 Setting procedure ...
Страница 316: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 315 Setting procedure ...
Страница 320: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 319 Setting procedure ...
Страница 347: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 346 Operating procedure ...
Страница 359: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 358 Setting Procedure Setting Soft start function ...
Страница 388: ...172 65710M 04 SC F71 Parameters Functions 23 Dec 2021 387 Setting procedure ...