Nord Drivesystems SK 200E Series, Manual

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NORDAC SK 200E Manual
182 Subject to technical alterations BU 0200 GB
Parameter
{Factory setting}
Setting value / Description / Note Device Supervisor
Parameter
set
P537 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 related to the FI current rating
201 = Function is disabled; the FI supplies the maximum possible current.
NOTE: The value set here can be undershot with a smaller value in P536.
For smaller output frequencies (<4.5Hz) or higher pulse frequencies (>6kHz or
8kHz, P504) the pulse switch-off by the power reduction (see Section 8.3) can be
undershot.
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 again reduced, the pulse
frequency increases to the original value again.
P539 Check output voltage
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 phase errors : 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 monitoring : 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 phas e + magnet isation monitoring : as 1 and 2 combined
NOTE: This function can also be used as an additional protective function for lifting
applications, but is not permissible on its own as protection for persons.