Grid Voltage Pi Controller - Danfoss Vacon NXP Applications Manual

Description of parameters
P2.14.4.2 DIN Controlled ID
Select a parameter ID controlled by ID1570.
P2.14.2.3 Value for Low digital input (FALSE)
P2.14.3.3 Value for Low digital input (FALSE)
P2.14.4.3 Value for Low digital input (FALSE)
Set the controlled parameter value when the digital input (ID1570) is LOW for the
parameter selected by ID1571. The function does not recognise decimals. For example,
give the value 10.00 Hz as
P2.14.2.4 Value for High digital input (TRUE)
P2.14.3.4 Value for High digital input (TRUE)
P2.14.4.4 Value for High digital input (TRUE)
Set the controlled parameter value when the digital input (ID1570) is HIGH for the
parameter selected by ID1571. The function does not recognise decimals. For example,
give the value 10.00 Hz as
5.15

Grid voltage PI controller

The PI controller is meant to help keep the line voltage constant when the load changes. The OPT-D7
option board is necessary. The PI controller controls the field weakening voltage point to keep a
constant voltage on the line. You can use this function only in the Island mode.
When OPT-D7 board is not used, it is possible to use Analogue Input 3 and 4 ID write function to give
the grid the Line Frequency D7 (ID1654) and Line Voltage D7 (ID1650). This enables use of grid PI
voltage controller without the OPT-D7 board. Note that both line frequency and line voltages needs
to be given.
P2.15.1 PI Activation
Select the digital input that will activate the PI controller. Set selection to 0.2 and the PI
controller is activated without an external wiring.
P2.15.2 PI Controller Gain
This parameter defines the gain of the PID controller. If the value of the parameter is set
to 100%, a change of 10% in the error value causes the controller output to change by
10%. If the parameter value is set to
P2.15.3 PI Controller I-time
The parameter ID119 defines the integration time of the PID controller. If this parameter
is set to 1.00 second, a change of 10% in the error value causes the controller output to
change by 10.00%/s. If the parameter value is set to
operate as a P controller.
24-hour support: +358 (0)201 212 575 • Email: vacon@vacon.com
ID15719 "Controlled ID"
ID1572
ID1592
ID15794
1000
.
ID1573
ID1593
ID1596
1000 .
ID1807
ID118
0
, the PID controller operates as an I controller.
ID119
vacon · 113
"FALSE Value"
"FALSE Value"
"FALSE Value"
"TRUE Value"
"TRUE Value"
"TRUE Value"
0.00 s
, the PID controller will
5