41
(14) Multi-function Analog Output AO1 Gain (Bn-14)
(15) Multi-function Analog Output AO1 Gain (Bn-15)
•
Multi-function analog output AO1 and AO2 can be set for their individual voltage
level respectively.
Multi-functional analog output AO2
( output contents depend on Sn-34)
10.0 V * Bn-15
Terminal
AO2
Multi-functional analog output AO1
(output contents depend on Sn-33)
10.0 V * Bn-14
Terminal
AO1
(16) PID Detection Gain
(Bn-16)
(17) PID Proportional Gain
(Bn-17)
(18) PID Integral Time
(Bn-18)
(19) PID Differential Time
(Bn-19)
(20) PID Bias
(Bn-20)
•
The PID control function is a control system that matches a feedback value (i.e., a
detected value) to the set target value. Combining the proportional (P), integral (I)
and derivative (D) control make the control possible to achieve required response
with the constant setting and tuning procedure of proportional gain Bn-17, integral
time Bn-18 and derivative time Bn-19.
•
See the appendix on page 110 for ” PID Parameter Setting”.
•
Fig. 14 is a Block diagram of the inverter’s internal PID control.
•
If both the target value and feedback value are set to 0, adjust the inverter output
frequency to zero.
Bias
Bn-17
(P)
Bn-18
(I)
Bn-19
(D)
integral
upper_limit
Cn-55
Upper_limit
(+/- 109 %)
PID control O/P 1
(Un-16)
Bn-20
Bn-16
PID control input
(Un-15)
PID control O/P 2
(Un-17)
Freq. Com.
Target
value
(multi-functional
analog input terminal
Aux when Sn-29 = 09)
Detected value
Ref. Com.terminal
：
Vin 0 ~ 10 V (Sn-24 = 0)
Ain 4 ~ 20mA (Sn-24 = 1)
while PID enabled
Cn-56
1st order delay
constant
Fig. 14 Block diagram for PID control in inverter
Содержание speecon 7200ma
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