Nord Drivesystems SK 180E Series, Руководство пользователя

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5 Parameter
BU 0180 en-4118 143
P537
Pulse disconnection
(Pulse disconnection)
S
10 ... 200 % / 201
{ 150 }
This function prevents rapid shutdown of the FI according to the load. With the pulse switch-off
enabled, the output current is limited to the set value. This limitation is implemented by brief
switching off of individual output stage transistors, the actual output frequency remains
unchanged.
10...200 % = Limit value in relation to nominal FI current
201 = The function is so to speak disabled, the FI supplies the maximum
possible current. However, at the current limit the pulse switch-off can still be
active.
NOTE: The value set here can be undershot by a smaller value in P536.
With smaller output frequencies (<4.5 Hz) or higher pulse frequencies (>6 kHz
or 8 kHz, P504) the pulse switch-off can be undershot by the power reduction
(please see chapter 8.4.1 "Increased heat dissipation due to pulse frequency").
NOTE: If the pulse switch-off is disabled (P537=201) and a high pulse frequency is
selected in parameter P504, the FI automatically reduces the pulse frequency
when the power limit is reached. If the load on the FI is reduced again, the
pulse frequency increases back to the original value.
P539
Output monitoring
(Output monitoring)
S P
0 ... 3
{ 0 } This protective function monitors the output current at the U-V-W terminals and checks for
plausibility. In cases of error, the error message E016 is output.
0 = Disabled:
Monitoring is not active.
1 = Only motor phases: The output current is measured and checked for symmetry. If an
imbalance is present, the FI switches off and outputs the error message E016.
2 = Only magnetisation: At the moment the FI is switched on, the level of the excitation
current (field current) is checked. If insufficient excitation current is present, the FI switches
off with the error message E016. A motor brake is not released in this phase.
3 = Motor phase + Magnet: Monitoring of the motor phases and magnetisation as in 1 and 2
are combined.
NOTE: This function can be used as an additional protective function for lifting applications,
but is not permissible on its own as protection for persons.