223
Special operation and speed control
(8) PID monitor function
The PID control set point, measured value and deviation value can be displayed on the operation panel and output from
terminal FM.
In the deviation monitor, a negative percent can be displayed as an integer, like 0% as 1000 and so on. (The deviation
monitor cannot be output from the terminal FM.)
For each monitor, set the following value in
Pr. 52 DU/PU main display data selection
and
Pr. 54 FM terminal function selection
.
* When neither of
C42 (Pr. 934)
nor
C44 (Pr. 935)
setting is "9999", minimum increment changes from % to no unit, and the full scale value for the terminal FM
changes from 100% to the larger value between
C42 (Pr. 934) PID display bias coefficient
and
C44 (Pr. 935) PID display gain coefficient
. (The smaller value between
C42 (Pr. 934)
and
C44 (Pr. 935)
becomes the minimum value.)
(9) Adjustment procedure
Setting
Monitor Description
Minimum
Increments
Terminal FM
Full Scale
Remarks
52
PID set point
0.1
100%/
C42 (Pr. 934)
or
C44 (Pr. 935)
—
53
PID measured value
0.1
54
PID deviation
0.1
—
Value cannot be set to
Pr. 54
.
Displays 1000 when the PID deviation is 0%.
Parameter setting
Adjust the PID control parameters,
Pr. 127
to
Pr. 134
,
Pr. 553
,
Pr. 554
or
Pr. 575 to Pr. 577
.
Terminal setting
Set the I/O terminals for PID control (
Pr. 178
to
Pr. 182 (input terminal
function selection), Pr. 190
and
Pr. 192 (output terminal function selection)
)
Turn ON the X14 signal.
When X14 signal is not assigned, setting a value other than "0" in
Pr.
128
activates PID operation.
Operation
Summary of Contents for FR-D720-0.2K-G
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