Mitsubishi Electric FR-F820-00046 Instruction Manual page 416

Fr-f800 series
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• Calibrating set point input
(Example: To enter the set point on terminal 2)
1.
1. Apply the input (for example, 0 V) of set point setting 0% across terminals 2 and 5.
2.
Using C2 (Pr.902), enter the frequency (for example, 0 Hz) to be output by the inverter when the deviation is 0%.
3.
Using C3 (Pr.902), set the voltage value at 0%.
4.
Apply the input (for example, 5 V) of set point setting 100% across terminals 2 and 5.
5.
Using Pr.125, enter the frequency (for example, 60 Hz) to be output by the inverter when the deviation is 100%.
6.
Using C4 (Pr.903), set the voltage value at 100%.
NOTE
• When the set point is set at Pr.133, the setting frequency of C2 (Pr.902) is equivalent to 0% and the setting frequency of Pr.125
(Pr.903) is equivalent to 100%.
• Measured value input calibration
1.
Apply the input (for example, 4 mA) of measured value 0% across terminals 4 and 5.
2.
Perform calibration by C6 (Pr.904).
3.
Apply the input (for example, 20 mA) of measured value 100% across terminals 4 and 5.
4.
Perform calibration by C7 (Pr.905).
NOTE
• Set the frequencies set at C5 (Pr.904) and Pr.126 to each of the same values set at C2 (Pr.902) and Pr.125.
• The display unit for analog input can be changed from "%" to "V" or "mA". (Refer to
• The following figure shows the results of having performed the calibration above.
[Set point setting]
(%)
100
0
0
5
 Setting multiple PID functions
• When the second PID function is set, two sets of PID functions can be switched for use. The PID setting is selected as
shown in the following table.
Pr.128 setting
(First PID setting)
"0" or not applied to the
frequency
"0" or not applied to the
frequency
Applied to the frequency
Applied to the frequency
*1
While Pr.155 = "0", the second function is enabled immediately after the RT signal turns ON. While Pr.155 = "10", the second function is enabled
only during constant speed operation when the RT signal turns ON. (For the details, refer to
[Measured value]
(%)
100
0
(V)
0
4
Pr.753 setting
(Second PID setting)
"0" or not applied to the
frequency
Applied to the frequency
"0" or not applied to the
frequency
Applied to the frequency
Manipulated variable (Hz)
(mA)
20
Pr.155
RT signal
*1
setting
OFF
0
ON
10
page
page
341.)
[Manipulated variable]
60
0
0
100 Deviation (%)
PID setting applied to the output
frequency
Control other than PID control
Second PID setting
First PID setting
First PID setting
Second PID setting
First PID setting
358.)
5. PARAMETERS
5.11 (A) Application parameters
1
2
3
4
5
6
7
8
9
10
415

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