Changing The Display Increment Of The Numerical Values Used In Pid Control; Calibration Of Pid Display Bias And Gain(C42 (Pr.934) To C45 (Pr.935)) - Mitsubishi Electric FR-F800 Instruction Manual

5.11.7
Changing the display increment of the
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. Name
759 Operation mode
A600 selection
C42
PID display bias
A630
coefficient
(934)

C43
PID display bias analog
A631
value
(934)

C44
PID display gain
A632
coefficient
(935)

C45
PID display gain analog
A633
value
(935)

1136 Second PID display bias
A670 coefficient
1137 Second PID display bias
A671 analog value
1138 Second PID display gain
A672 coefficient
1139 Second PID display gain
A673 analog value
1142 Second PID unit
A640 selection

The parameter number in parentheses is the one for use with 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 VDC, 0 to 10 VDC, or 4 to 2 mADC.
• 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).
• When both of C42 (Pr.934) and C44 (Pr.935) "9999" and Pr.133 is set as the set point, the setting of C42 (Pr.934) is
treated as 0%, and C44 (Pr.935) as 100%.
Initial
Setting range
value
0 to 43
0
9999
0 to 500
9999
9999
20% 0 to 300%
0 to 500
9999
9999
100% 0 to 300%
0 to 500
9999
9999
20% 0 to 300%
0 to 500
9999
9999
100% 0 to 300%
9999 0 to 43, 9999
100
Bias
C42 (Pr.934)
0 20
0 4
Frequency setting signal
0 1
0 2
C43 (Pr.934)
(A) Application parameters
Description
Change the PID control-related display unit that is displayed
on the LCD operation panel (FR-LU08) or the parameter
unit (FR-PU07).
Without display unit switching
Set the coefficient of the bias side (minimum) of measured
value input.
Displayed in %.
Set the converted % of the bias side (minimum) current/
voltage of measured value input.
Set the coefficient of the gain side (maximum) of measured
value input.
Displayed in %.
Set the converted % of the gain side (maximum) current/
voltage of measured value input.
Refer to C42 (934)
Refer to C43 (934)
Refer to C44 (935) Second PID control
Refer to C45 (935)
Refer to Pr.759
Initial value
Gain
C44 (Pr.935)
100%
20mA
5V
10V
C45 (Pr.935)
399
PARAMETERS
5
GROUP
A