# Changing The Display Increment Of Numerical Values Used In Pid Control - Mitsubishi Electric FR-A820-00046 Instruction Manual

Parameters
5.14.10

## Changing the display increment of numerical values used in PID control

When the LCD operation panel (FR-LU08) or the parameter unit (FR-PU07) is used, the display unit of
parameters and monitored items related to PID control can be changed to various units.
Pr.
759
A600
C42
A630
(934)
C43
A631
(934)
C44
A632
(935)
C45
A633
(935)
1136
A670
1137
A671
1138
A672
1139
A673
1142
A640
The parameter number in parentheses is the one for use with the the LCD operation panel and the
parameter unit.
Calibration of PID display bias and gain(C42 (Pr. 934) to C45 (Pr. 935))
● When both C42 (Pr. 934) and C44 (Pr. 935) ≠ "9999", the bias and gain values for the set point,
measured value and deviation in PID control can be calibrated.
● "Bias"/"gain" function can adjust the relation between PID displayed coefficient and measured
value input signal that is externally input. Examples of these measured value input signals are 0
to 5 V DC, 0 to 10 V DC, or 4 to 2 mA DC.
● Set the value that is displayed when the PID measured value (control amount) is 0% to C42 (Pr. 934)
and the value that is displayed when the PID measured value (control amount) is 100% to C44
(Pr. 935).
FR-A800
Name
Operation mode selection
PID display bias coefficient
PID display bias analog
value
PID display gain coefficient
PID display gain analog
value
Second PID display bias
coefficient
Second PID display bias
analog value
Second PID display gain
coefficient
Second PID display gain
analog value
Second PID unit selection
Initial
Setting range Description
value
Change the PID control-related display unit that is
0 to 43
displayed on the LCD operation panel (FR-LU08) or
0
the parameter unit (FR-PU07).
9999
Without display unit switching
Set the coefficient of the bias side (minimum) of
0 to 500
measured value input.
9999
9999
Displayed in %.
Set the converted % of the bias side (minimum)
20%
0 to 300%
current/voltage of measured value input.
Set the coefficient of the gain side (maximum) of
0 to 500
measured value input.
9999
9999
Displayed in %.
Set the converted % of the gain side (maximum)
100%
0 to 300%
current/voltage of measured value input.
0 to 500
9999
Refer to C42(934)
9999
20%
0 to 300%
Refer to C43(934)
0 to 500
9999
Refer to C44(935)
9999
100%
0 to 300%
Refer to C45(935)
9999
0 to 43, 9999
Refer to Pr. 759
(A) Application parameters
Second PID control
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