Mitsubishi Electric 800 Series Instruction Manual page 498

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.
Operation at limited
Pr.1015 setting
0 (initial value) Integral stop
1 Integral continuation
2 Integral stop
10 Integral stop
11 Integral continuation
12 Integral stop
NOTE
• While the integral stop is selected, the integral stop is enabled when any of the following conditions is met.
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").
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.
Parameter Monitor
settings description
52 PID set point
Second PID
92
set point
PID
53 measured
value
Second PID
93 measured
value
PID
67 measured
value 2
Second PID
95 measured
value 2
54 PID deviation
Second PID
94
deviation
PID
91 manipulated
variable
Second PID
96 manipulated
variable

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".
Range of manipulation
frequency
-100% to +100%
0 to 100%
-100% to +100%
0 to 100%
Integral stop conditions
Minimum
increment
Terminal FM
0.1% 0 to 100%

0.1% 0 to 100%

0.1% 0 to 100%

Setting not
0.1%
available
Setting not
0.1%
available
Operation during
output interruption
Integral clear
Integral stop
Monitor range
Operation
Terminal AM
panel
900% to 1100%
-100% to 100%
or

-100% to 100%
900% to 1100%
-100% to 100%
or

-100% to 100%
(A) Application parameters
Remarks
"0" is displayed at all times when
PID control is based in deviation
input.
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.
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%.)
PARAMETERS
5
GROUP
A
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