Nord Drivesystems SK 510P, Руководство с инструкциями по установке

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5 Parameter
BU 0600 en-3221 165
P520 Flying start S P
Setting range 0 … 4
Factory setting { 0 }
Description This function is required to connect the FI to motors which are already rotating, e.g. for
fan drives.
Note For physical reasons, flying start only operates above 1/10 of the nominal motor
frequency
P201 , however not below 10 Hz.
Motor frequencies >100 Hz are only picked up in speed controlled mode ( P300 = 1 ).
Example 1 Example 2
P201 50 Hz 200 Hz
f = 1/10* P201 F = 5 Hz F = 20 Hz
Result f
Fang
= The flying start functions
above f
Fang
=10Hz.
The flying start functions
above f
Fang
=20Hz.
PMSM: The catch function automatically determines the direction of rotation.
Therefore, if function 2 is set, the device behaves identically to function 1. If function 4
is set, the device behaves identically to function 3.
PMSM: In CFC closed loop mode, flying start can only be executed if the rotor position
is known in relation to the incremental encoder. For this purpose, the motor cannot
initially rotate when it is switched on for the first time after a "mains on" of the FI.
This restriction does not apply if the zero track of the incremental encoder is used.
PMSM: The flying start does not function if fixed pulse frequencies (setting 16.2 and
16.3) are used in
P504 .
Setting values
Value Meaning
0 Switched off No flying start
1 Both directions The FI searches for a speed in both directions.
2 In the setpoint direction Searches only in the direction of the present setpoint value.
3 Both directions after failure As for 1, however only after mains failure or fault.
4 Setpoint direction after failure As for 2, however only after mains failure or fault.
P521 Flying start Resolution S P
Setting range 0.02 … 2.50 Hz
Factory setting { 0.05 }
Description "
Flying start resolution
“. The flying start circuit search increment size can be adjusted
using this parameter. Values that are too large affect accuracy and cause the FI to cut
out with an overcurrent message. If the values are too small, the search time is greatly
extended.