(A) Application parameters
Parameters
5 - 356
Basic configuration of PID control
●
Pr. 128 = "10, 11" (deviation value signal input)
●
Pr. 128 = "20, 21" (measured value input)
PID action outline
●
PI action
PI action is a combination of proportional action (P) and integral action (I), and applies a manipulated
amount according to the size of the deviation and transition or changes over time.
I001230E
Fig. 5-159:
System configuration when Pr. 128 = 10, 11 (using an external (PID) controller)
I001231E
Fig. 5-160:
System configuration when Pr. 128 = 20 or 21 (set/feedback value at the inverter)
Fig. 5-161:
Operation example for stepped changes of
measured value
I002689E
NOTE
PI action is the result of P and I actions being added together.
[
[
Kp 1+
+Td S
1
Ti S
•
•
* Set "0" to Pr. 868 "Terminal 1 function assignment". When Pr. 868
≠
"0", PID control is invalid.
Set point
Deviation signal
Kp: Proportionality constant; Ti: Integral time; S: Operator; Td: Differential time
Motor
Manipulated
variable
Terminal 1 *
0 to
±
10 V DC
(0 to
±
5 V)
Feedback signal (measured value)
PID operation
Inverter circuit
To outside
[
[
Kp 1+
+Td S
1
Ti S
•
•
Note that the input of terminal 1 is added to the set point of terminal 2 as a set point.
Set "0" to Pr. 858 "Terminal 4 function assignment". When Pr. 858
≠
"0", PID control is invalid.
Set point
Kp: Proportionality constant; Ti: Integral time; S: Operator; Td: Differential time
Motor
Manipulated
variable
Terminal 4
Feedback signal (measured value)
PID operation
Inverter circuit
4 to 20 mA DC
(0 to 5 V, 0 to 10 V)
0 to 5 V DC
(0 to 10 V, 4 to 20 mA)
Pr. 133 or
terminal 2
Deviation
Set point
P action
I action
PI action
Measured value
Time
Time
Time
Содержание FR-F820-00046
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Страница 114: ...System configuration for Ethernet communication FR F800 E Installation and wiring 2 86 ...
Страница 172: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Страница 812: ...Inverter to inverter link function FR F800 E Parameters 5 640 ...
Страница 874: ...Measurement of main circuit voltages currents and powers Precautions for maintenance and inspection 7 20 ...
Страница 900: ...Outline dimension drawings Specifications 8 26 ...
Страница 928: ...EC Declarations of Conformity Appendix A 28 A 6 EC Declarations of Conformity A 6 1 FR F820 FR F840 FR F842 series ...
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