Vaidnor VDF650 Series User Manual page 65

Operation, Display and Application Examples
4.8.5 Pulse Setting as the Frequency Source
In many scenarios, pulse input is used as the frequency source. The specifcations of pulse
signals are: voltage 9–30 V, frequency 0–100 kHz.
Only DI5 can be used for pulse input. The relationship between pulse input from DI5 and
the corresponding setting is set in P4-28 to P4-31. The relationship is a two-point line, and
100% of pulse input corresponding setting corresponds to the maximum frequency of P0-10,
as shown in Figure 4-22.
Figure 4-22 Pulse setting as the frequency source
Terminal
Pulse setting
OC output
4.8.6 Frequency Closed-Loop Control
The VDF650 has a built-in PID regulator. Together with the frequency sources, the PID
regulator can implement automatic adjustment of progress control, such as constant
temperature, constant pressure, and tension control.
Figure 4-23 Automatic adjustment by PID regulator
PA-01
(PID digital setting )
%
Setting PID
%
PA-00
target setting
(PID setting
source)
FA-04
U0-16
U0-15
(PID setting
(PID
(PID
feedback
setting ) feedback)
range )
When PID frequency closed-loop control is implemented, P0-03 (Main frequency source X
selection) must be set to 8 (PID). The PID-related parameters are set in group PA, as shown
in Figure 4-23.
The VDF650 has two built-in equivalent PID calculating units. You can set the features,
such as adjustment speed and accuracy, for the two units separately based on the actual
conditions. Switchover between the two units can be implemented automatically or by
means of an external DI terminal.
Function Setting
code value
P4-00
DI1
P4-01
DI2
P4-02
DI3
P4-03
DI4
P4-04 30
DI5
.
.
COM
Only DI5 can be used for pulse input .
*
Built-in PID
regulator
PA-03 (PID action
direction )
0: Forward action
1: Reverse action
PA-09
(PID deviation
limit )
PID
feedback
PA-12
(PID feedback
filter time)
Frequency
feature setting
.
P4-28 to P4-31:
Relationship between
.
pulse setting frequency
. and running frequency
.
.
PA-18
PA-19
PA-20
Switchover
PID 1:
condition
Proportional Kp 1: PA-05
Integral Ti1: PA-06
Derivative Td1: PA-07
PA-13
PA-23
PA-24
PID 2:
Proportional Kp 2: PA-15
PID output
Integral Ti2: PA-16
feature
Derivative Td2: PA-17
PA-02 (PID
feedback
source)
- 64 -
VDF650 User Manual
Frequency
source selection
P0-07 = 0
Running
frequency
P0-03 = 5
P0-07 = 0
P0-27 = 0
PID output
frequency
P0-03 = 8
PWM Execution
Frequency
drive by motor
source selection
P4-13 to P 4-32
(Calibration
curve)
Electric
P4-33
signal
%
Transmitter
AI parameter
detection
feature
preprocessing
Object
Physical
quantity