NORD Drivesystems BU0200 - Manual (Page 217)

SK 200E Manual for frequency inverters
216 Subject to technical alterations BU 0200 GB-4411
Parameter
{Factory setting}
Setting value / Description / Note Device Supervisor
Parameter
set
P520
Flying start
(Flying start)
S P
0 ... 4
{ 0 }
This function is required to connect the FI to motors which are already rotating, 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 = Directio of setpoint, "In setpoint value direction", searches only in the direction of the
setpoint value which is present.
3 = Both dir after fault, "Both directions after failure", only after mains failure and fault
4 = Dir of set a 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 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
Fly
=
5Hz < 10Hz
The flying start circuit
functions above
f
Fly
=10Hz.
20Hz > 10Hz
The flying start circuit
functions above
f
Fly
=20Hz.
P521
Fly. start resol.
(Flying start resolution)
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
Fly. start offset
(Flying start offset)
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 automatically returns 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 is lost.
2 = Fact setng wout bus, "Factory setting without bus": All parameters of the frequency
inverter, but not the bus parameters, are reset to the factory setting.
3 = Factory set wo motor, "Factory setting without motor data": All parameters of the
frequency inverter, but not the motor data, are reset to the factory setting.
Note: If an external EEPROM ("memory module"“) is plugged in, then a value of ("Factory
setting …") only affect this. If no "memory module" is present, the set command
("Factory setting …") is applied to the internal EEPROM (as of firmware version V 1.3).