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5. PARAMETERS
5.11 (A) Application parameters
3
4
5
5
5
6
7
8
9
10
5.11.8 Changing the display increment of the numerical values
used in PID control
When the operation panel or the parameter unit is used, the display unit of parameters and monitored items related to PID
control can be changed to various units.
Calibration of PID display bias and gain (Pr.934 to Pr.935)
• When both Pr.934 and 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 20 mADC.
• Set the value that is displayed when the PID measured value (control amount) is 0% to Pr.934 and the value that is
displayed when the PID measured value (control amount) is 100% to Pr.935.
• When both of Pr.934 and Pr.935 "9999” and Pr.133 is set as the set point, the setting of Pr.934 is treated as 0%, and
Pr.935 as 100%.
Pr. Name Initial value Setting range Description
759
A600
Operation mode selection 0 0 to 43 Change the PID control-related display unit that is displayed
on the operation panel or the parameter unit.
9999 Without display unit switching
934
A630
PID display bias coefficient 9999 0 to 500 Set the coefficient of the bias side (minimum) of measured
value input.
9999 Displayed in %.
934
A631
PID display bias analog
value
20% 0 to 300% Set the converted % of the bias side (minimum) current/
voltage of measured value input.
935
A632
PID display gain coefficient 9999 0 to 500 Set the coefficient of the gain side (maximum) of measured
value input.
9999 Displayed in %.
935
A633
PID display gain analog
value
100% 0 to 300% Set the converted % of the gain side (maximum) current/
voltage of measured value input.
1136
A670
Second PID display bias
coefficient
9999 0 to 500 Refer to Pr.934 Second PID control
9999
1137
A671
Second PID display bias
analog value
20% 0 to 300% Refer to Pr.934
1138
A672
Second PID display gain
coefficient
9999 0 to 500 Refer to Pr.935
9999
1139
A673
Second PID display gain
analog value
100% 0 to 300% Refer to Pr.935
1142
A640
Second PID unit selection 9999 0 to 43, 9999 Refer to Pr.759
100
0
0
0
0
Frequency setting signal
100%
20 mA
5 V
10 V
Pr.935
Initial value
Bias
Pr.934
Gain
Pr.935
20
4
1
2
Pr.934
Coefficient
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