Mitsubishi Electric 800 Series, Instruction Manual, Page: 498 / 727

(A) Application parameters
PARAMETERS
497
5
GROUP
A
 Integral stop selection when the frequency is limited (Pr.1015)
• The operation for the integral term can be selected when the frequency or the manipulated amount is limited during PID
control. The operation during output suspension can be selected for the integral term using the PID output suspension
(sleep) function.
• The manipulation range can be selected.
NOTE
• While the integral stop is selected, the integral stop is enabled when any of the following conditions is met.
 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 and AM.
• 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 terminal FM.)
• Set the following values to Pr.52 Operation panel main monitor selection , Pr.774 to Pr.776 (Operation panel monitor
selection), Pr.54 FM terminal function selection and Pr.158 AM terminal function selection for each monitor.

When Pr.934 and Pr.935 are set, the minimum increment changes from unit % to no unit, and the monitor range can be changed. (Refer to
page 501 .)

When the minus value display is set disabled using Pr.290 , the terminal AM output becomes "0".
Pr.1015 setting
Operation at limited
frequency
Range of manipulation
Operation during
output interruption
0 (initial value) Integral stop
-100% to +100%
Integral clear 1 Integral continuation
2 Integral stop 0 to 100%
10 Integral stop
-100% to +100%
Integral stop 11 Integral continuation
12 Integral stop 0 to 100%
Integral stop conditions
The frequency reaches the upper or lower limit.
The manipulated amount reaches plus or minus 100% (
Pr.1015 = "0 or 10").
The manipulated amount reaches 0% or 100% ( Pr.1015 = "2 or 12").
Parameter
settings
Monitor
description
Minimum
increment
Monitor range
Remarks
Terminal FM 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%

Displays PID measured value
even if the PID control operating
conditions are not satisfied while
the PID control is enabled.
"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.
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