Danfoss VLT FCD 311 User Manual

VLT
®
FCD Series
Programming, FCD
300
427 U3 voltage
(U3 VOLTAGE)
Value:
0.0 - 999.0 V
✭ par. 103
Function:
See parameter 423 U1 voltage.
Description of choice:
Set the output voltage (U3) that is to match the third
output frequency (F3), parameter 428 F3 frequency .
428 F3 frequency
(F3 FREQUENCY)
Value:
Par. 426 F2 frequency - 1000 Hz
✭ Par. 104 Motor frequency
Function:
See parameter 423 U1 voltage.
Description of choice:
Set the output frequency (F3) that is to match the third
output voltage (U3), parameter 427 U3 voltage .
NB!:
Parameters 437-444 are only used
if in parameter 100 Configuration a
selection has been made of Process
regulation, closed loop. [3].
437 Process PID normal/inverse control
(PROC NO/INV CTRL)
Value:
✭Normal (NORMAL)
[0]
Inverse (INVERSE)
[1]
Function:
It is possible to choose whether the process regulator
is to increase/reduce the output frequency if there
is a deviation between the reference/setpoint
and the actual process mode.
Description of choice:
If the frequency converter is to reduce
the output frequency in case the feed-
back signal increases, select Normal [0].
If the frequency converter is to increase the
output frequency in case the feedback signal
increases, select Inverse [1].
438 Proces PID anti windup
(PROC ANTI WINDUP)
Value:
Not active (DISABLE)
[0]
✭Active (ENABLE)
[1]
Function:
It is possible to select whether the process regulator is
to continue regulating on a deviation even if it is not
possible to increase/reduce the output frequency.
Description of choice:
The factory setting is Enable [1], which means that
the integration link is initialised in relation to the
actual output frequency if either the current limit, the
voltage limit or the max./min. frequency has been
reached. The process regulator will not engage
again until either the error is zero or its sign has
changed. Select Disable [0] if the integrator is to
continue integrating on the deviation, even if it is not
possible to remove the fault by such control.
NB!:
If Disable [0] is selected, it will mean that when
the deviation changes its sign, the integrator
will first have to integrate down from the
level obtained as a result of the former error, before
any change in output frequency occurs.
439 Process PID start frequency
(PROC START VALUE)
Value:
f
MIN
-f
MAX
(parameter 201/202)
✭ Par. 201 Output frequency, low limit, f
MIN
Function:
When the start signal comes, the frequency converter
will react in the form of Open loop and will not
change to Closed loop until the programmed start
frequency is reached. This makes it possible to set a
frequency that corresponds to the speed at which the
process normally runs, which will enable the required
process conditions to be reached sooner.
Description of choice:
Set the required start frequency.
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.04.B7.02 - VLT is a registered Danfoss trademark
73

Danfoss VLT FCD 311 Specifications

General

Brand	Danfoss
Model	VLT FCD 311
Category	DC Drives
Language	English