Settings Of Pid Control - Toshiba TOSVERT VF-P7 Instruction Manual

3.3.2 Settings of PID control

Parameters for PID control are following. Refer to Chapter 4 for how to set the parameters.
Item of setting
Maximum frequency
Upper limit frequency
Lower limit frequency
Input terminal of
feedback amount
Process amount
reference setting
mode selection
Acceleration time
Deceleration time
Jump frequency
Jump frequency
band
Object of jump
frequency process
Over ride
Run frequency
(1) Maximum frequency
Set the maximum value of frequency range that the inverter outputs, with maximum frequency
().
(2) Upper limit frequency / Lower limit frequency
Set the permissible maximum value of output frequency with upper limit frequency () and
permissible minimum value of output frequency with lower limit frequency ().
Upper limit frequency and lower limit frequency are also effective to process amount. Upper limit
frequency and lower limit frequency limit process amount
(3) Input terminal for feedback amount
Set the input terminal for feedback amount with .
Refer to 7.3 for the scaling adjustment of analog input. This adjustment is effective for the case
that input value of feedback amount is very small. Set the zero point of the feedback amount at
the 0Hz and the maximum value of the feedback amount at the maximum frequency ().
Example of setting 1) In case of 4 to 20mA feedback amount (use the II terminal)
Note) Since feedback amount is treated as frequency value inside the inverter, the setting
shown in the above figure is needed. Maximum frequency () limits the feedback
amount after the frequency conversion.
Parameter
 ∼ [Hz]
 ∼ [Hz]
 ∼ [Hz]
: PID control disabled, : VI/II,

: RR, : RX1, : RX2
∼ (Refer to (4) for details)

∼ [s]

∼ [s]


∼ [Hz]



∼ [Hz]


: Process amount

: Output frequency
 ∼
 ∼
 ∼ [Hz]
∼ [Hz]


(80Hz)

(0Hz)
4mA
 
(20%) (100%)
Adjustment range
Maximum frequency () is
assumed to be 80Hz.
20mA
C-9
Default Reference
setting section
5.7

5.8

5.8

Only this

section
5.3

Model
5.1.2
dependent
Model
5.1.2
dependent
6.10

6.10

Only this

section
6.27

6.27

6.7.2

6.7.2
