Mitsubishi FR-A800

(A) Application parameters
510
PARAMETERS
Integral stop selection at limited frequency (Pr.1015)
• The operation for the integral term can be selected when the frequency is restricted by the upper/lower limit, or the
manipulated amount is limited to ±100% during PID control.
• The operation during output shutoff can be selected for the integral term using the PID output suspension function (SLEEP
function).
PID monitor function
• This function displays the PID control set point, measured value and deviation on the operation panel, and can output these
from the terminals FM, AM and CA.
• An integral value indicating a negative % can be displayed on the deviation monitor. 0% is displayed as 1000. (These
values cannot be output on the deviation monitor from terminals FM and CA.)
• Set the following values to Pr.52 Operation panel main monitor selection, Pr.774 to Pr.776 (Operation panel monitor
selection), Pr.992 Operation panel setting dial push monitor selection, Pr.54 FM/CA terminal function selection and
Pr.158 AM terminal function selection for each monitor.
 When C42(Pr.934) and C44(Pr.935) are set, the minimum increment changes from unit % to no unit, and the monitor range can be changed.
(Refer to page 514.)
 When the minus value display is set disabled using Pr.290, the terminal AM output becomes "0".
Pr.1015 setting
Operation at limited
frequency
Operation during output
interruption
0 (initial value) Integral stop Integral clear
1 Integral continuation Integral clear
10 Integral stop Integral stop
11 Integral continuation Integral stop
Parameter
settings
Monitor
description
Minimum
increment
Monitor range
Remarks
Terminal FM/CA Terminal AM
Operation
panel
52 PID set point
0.1% 0 to 100%

"0" is displayed at all times when
PID control is based in deviation
input.
92
Second PID
set point
53
PID
measured
value
0.1% 0 to 100%

93
Second PID
measured
value
67
PID
measured
value 2
0.1% 0 to 100%

The measured value is also
displayed when PID control is
invalid.
"0" is displayed at all times when
PID control is based in deviation
input.
95
Second PID
measured
value 2
54 PID deviation
0.1%
Setting not
available
-100% to 100%

900% to 1100%
or
-100% to 100%

Using Pr.290 Monitor negative
output selection, minus values
can be output to the terminal AM
and displayed on the operation
panel (FR-DU08).
Even if minus display is enabled,
the display range is 900% to
1100% in monitors on the
operation panel. (0% is offset and
displayed as 1000%.)
94
Second PID
deviation
91
PID
manipulated
variable
0.1%
Setting not
available
-100% to 100%

900% to 1100%
or
-100% to 100%
96
Second PID
manipulated
variable