NORD Drivesystems BU0505 - Manual (Page 124)

SK 54xE – Users Manual for Frequency Inverters
124 BU 0505 GB-1013
P520
Flying start
(Flying start)
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 are only picked up in speed controlled mode (Servo mode P300 = ON).
0 = Switched off, no flying start.
1 = Both directions, the FI looks for a speed in both directions.
2 = Setpoint value direction, searches only in the direction of the setpoint val. which is present.
3 = Both directions after failure, as for { 1 }, however only after mains failure or fault
4 = Setpoint direction after fail, as for{ 2 }, however only after mains failure or fault
NOTE: For physical reasons, the flying start circuit only operates above 1/10 of the nominal
motor frequency (P201), however, not below 10Hz.
Example 1 Example 2
(P201) 50Hz 200Hz
f=1/10*(P201) f=5Hz f=20Hz
Comparison of f with
f
min
with: f
min
=10Hz
Result f
Fang
=
5Hz < 10Hz
The flying start circuit
functions above
f
Fang
=10Hz.
20Hz < 10Hz
The flying start circuit
functions above
f
Fang
=20Hz.
Pos : 280 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P500-P599/ Paramet er P521 – Fangschalt ung Auflösung @ 0\mod_1328092909572_388. doc x @ 11364 @ @ 1
P521
Fly. start resol.
(Flying start resolution)
S P
0.02... 2.50 Hz
{ 0.05 }
Using this parameter, the flying start circuit search increment size can be adjusted. Values that
are too large affect accuracy and causes the FI to cut out with an overcurrent message. If the
values are too small, the search time is greatly extended.
Pos : 281 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P500-P599/ Paramet er P522 – Fangschalt ung Of fset @ 0\ mod_1328093001838_388.doc x @ 11387 @ @ 1
P522
Fly. start offset
(Flying start offset)
S P
-10.0 ... 10.0 Hz
{ 0.0 }
A frequency value that can be 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.
Pos : 282 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P500-P599/ Paramet er P523 – Wer ks eins tell ung @ 0\ mod_1328093044010_388. doc x @ 11410 @ @ 1
P523
Factory setting
(Factory setting)
0 ... 2
{ 0 }
By selecting the appropriate value and confirming it with the ENTER 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 settings: 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.
Pos : 283 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P500-P599/ Paramet er P525 – Last über wachung Maxi mal wert @ 0\ mod_1328093087228_388. doc x @ 11433 @ @ 1