425
U2 voltage
Value:
0.0 - 999.0 V
parameter 103
Function:
See
parameter 423 U1 voltage
.
Description of choice:
Set the output voltage (U2) that is to match the second
output frequency (F2),
parameter 426 F2 frequency.
426
F2 frequency
Value:
Parameter 424 F1 frequency
-
parameter 428 F3 frequency
Parameter 104
Motor frequency
Function:
See
parameter 423 U1 voltage
.
Description of choice:
Set the output frequency (F2) that is to match the second
output voltage (U2),
parameter 425 U2 voltage
.
427
U3 voltage
Value:
0.0 - 999.0 V
parameter 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
Value:
Parameter 426 F2 frequency
-
1000 Hz
Parameter 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
.
NOTICE
Parameters 437-444
are only used if [3] Process
regulation, closed loop has been selected in
parameter
100 Configuration
.
437
Process PID normal/inverse control
Value:
Normal (normal)
[0]
Inverse (inverse)
[1]
Function:
Select whether the process regulator is to increase/
decrease the output frequency if there is a deviation
between the reference/setpoint and the actual process
mode.
Description of choice:
If the adjustable frequency drive is to reduce the output
frequency in case the feedback signal increases, select
[0]
Normal
. If the adjustable frequency drive is to increase the
output frequency in case the feedback signal increases,
select
[1] Inverse
.
438
Proces PID anti windup
Value:
Not active (DISABLE)
[0]
Active (ENABLE)
[1]
Function:
Select whether the process regulator is to continue
regulating on a deviation, even if it is not possible to
increase/decrease the output frequency.
Description of choice:
The factory setting is
[1] Enable
, 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 maximum/minimum frequency has been reached. The
process regulator does not engage again until either the
error is 0, or its sign has changed. Select
[0] Disable
if the
integrator is to continue integrating on the deviation, even
if it is not possible to remove the fault by such control.
NOTICE
If
[0] Disable
is selected, it means that when the
deviation changes its sign, the integrator has 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
Value:
f
MIN
- f
MAX
(parameter
201/202)
Parameter 201 Output
frequency, low limit, f
MIN
Function:
When the start signal comes, the frequency converter
reacts in the form of
Open loop
and does not change to
Closed loop
until the programmed start frequency is
reached. This allows for setting a frequency that
corresponds to the speed at which the process normally
runs, which enables the required process conditions to be
reached sooner.
Description of choice:
Set the required start frequency.
Programming
Design Guide
98
Danfoss A/S © Rev. May/2014 All rights reserved.
MG27E402
4
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