Paramenter Setting Mode; Pi Control [Fb. Pi, Cp, Ci, Cr, Cf5] - Toshiba TOSVERT VF-A3 Instruction Manual

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3.25 Parameter setting mode
[PJWdJ
Select the desired data setting mode by inputting an appropriate number from the list given in the 3
following table.
. ".
I
Selection I F f
I
f ,0 nnd
I
unc Ion
I
0
. I I U
I
!
i
o
I
Disables all inputs except data input, change disabling command, and fre-
I
tt'
I quency se Ing.
1
Valid for panel input only
2
Valid for host command input only
3
Switcing between panel and host command inputs is allowed. (Latest data
input overwrites previous entries).
• For details of setting procedure, refer to Section 3.1.2 (page 23). Its function number is 9.
3.26 PI control [/cb.
PI. CPo CI. CR.
C,cS ]
By using a 4 to 20mAdc signal from a process transducer, you can perform a PI control with the
inverter.
(1) Wiring and operation procedure.
1)
Feedback signals form the process transducer must be input to the IV-CC terminals.
Switch to I-side as regards jumpers JP 1.
2)
The output frequency must be set within a range from 0 to maximum frequency against
terminal frequency setting signal with a 4mA to 20m A input indicating Section 3.9.3
(page 54).
3)
A frequency must be set by control panel. Set a frequency for the process rate. Switch
in the frequency setting mode to the panel mode, refer to Section 3.24 (page 73).
(Switch to the terminal mode enable to connect the process rate set pointer externally)
4)
Set to 2 (PI control) in the FB.PI selection.
Setting of
F
b.
P:
o
1
2
Function
!
!
Feedback control OFF
Feedback control (TG, PG) (optional)
I
PI control

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