NORD Drivesystems BU0180 User Manual
Page 115
6 Parameterisation
BU 0180 GB-0914
Pre-series version
115
Parameter
{Factory setting}
Setting value / Description / Note
Device
Supervisor
Parameter
set
P520
Flying start circuit
(Flying start circuit)
S
P
0 ... 4
{ 0 }
This function is required to connect the FI to already rotating motors, e.g. in fan drives. Motor
frequencies >100Hz cannot be captured.
0 = Switched off, no flying start.
1 = Both directions, the FI looks for a speed in both directions.
2 = In setpoint value direction, searches only in the direction of the setpoint value which is
present.
3 = Both directions after failure"Both directions after failure", only after mains failure and
fault
4 = Setpoint dir.
after fault,
"In setpoint direction after fault“, only after mains failure and
fault
NOTE:
For physical reasons, the flying start circuit only operates above 1/10 of the nominal
motor frequency (P201), however, not below 10 Hz.
Example 1
Example 2
(P201)
50 Hz
200 Hz
f=1/10*(P201)
f=5 Hz
f=20 Hz
Comparison of f with f
min
with:
f
min
=10Hz
Ergebnis f
Fly
=
5 Hz < 10 Hz
The flying start circuit
functions above
f
Fang
=10 Hz.
20 Hz > 10 Hz
The flying start circuit
functions above
f
Fang
=20 Hz.
P521
Flying start circuit
offset
(Flying start circuit offset)
S
P
0.02... 2.50 Hz
{ 0.05 }
Using this parameter, the flying start search increment size can be adjusted. Values that are too
large affect accuracy and causes the FI to cut out with an overcurrent report. If the values are
too small, the search time is greatly extended.
P522
Flying start circuit
offset
(Flying start circuit resolution)
S
P
-10.0 ... 10.0 Hz
{ 0.0 }
A frequency value which is added to the frequency value found, e.g. to remain in the motor
range and so avoid the generator range and therefore the chopper range.
P523
Factory setting
(Factory setting)
0 ... 3
{ 0 }
By selecting the appropriate value and confirming it with the OK key, the selected parameter
range is entered in the factory setting. Once the setting has been made, the value of the
parameter returns automatically to 0.
0 = No change: Does not change the parameterisation.
1 = Load
factory setting: The complete parameterisation of the FI reverts to the factory
setting. All originally parameterised data are lost.
2 = Factory settings without bus: All parameters of the frequency inverter with the
exception of the bus parameter, are reset to the factory setting.
3 = Fact.
wo. motor data, "Factory setting without motor data: All parameters of the
frequency inverter, but not the motor data, are reset to the factory setting.