E5AK
5--21
LBA detection time
Conditions of Use
The LBA (Loop Break Alarm) function
must be assigned as an output.
·
This parameter is automatically set by AT execution (excluding AT execution in a
ON/OFF control).
·
The LBA is output if the change width of the process value falls below 0.2 %full-scale
of the time preset to this parameter when the manipulated variable is set in the “MV
upper limit” or “MV lower limit” parameters.
·
The LBA function is disabled when this parameter is set to “0”.
Setting Range
Unit
Default
0 to 9999
Second
0
F
Related article
4.4 LBA (page 4-9)
7.3 How to Use Error Output (page 7-5)
F
Related parameters
“AT Execute/Cancel” (level 1 mode)
“Control output 1 assignment” “Control output 2 assignment” “Auxiliary output 1
assignment” (setup mode)
MV at stop
MV at PV error
Conditions of Use
Advanced PID control
·
The “MV at stop” parameter sets the manipulated variable when operation stops on
a standard type controller. On a position-proportional type controller, this parameter
sets the action (close/hold/open) when operation stops.
·
The “MV at PV error” parameter sets the manipulated variable when an input error
occurs. On a position-proportional type controller, this parameter sets the action
(close/hold/open) when an input error occurs.
·
Standard type
Control Method
Setting Range
Unit
Default
Standard
-5.0 to 105.0
%
0
Heating and cooling
-105.0 to 105.0
%
0
The manipulated variable at the cooling side during heating and cooling control is
expressed as a negative value.
·
Position-proportional type
Setting Range
Unit
Default
[
]: Hold/[
]: Open/[
]: Close
None
F
Related articles
MV at stop
: 3.6 Starting and Stopping Operation (page 3-13)
MV at PV error
: 8.2 How to Use the Error Display (page 8-3)
Level 2 Mode
Function
Comment
See
Function
Comment
See