Ctl NX2700 Instrukcja Użytkownika Pobierz pdf (Strona 32)

CABLING AND CONNECTIONS vacon • 31

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6.2 Power connections

6.2.1 LCL filter wiring diagram of NXC regenerative low-harmonic drive

The LCL filter in the NXC regenerative low-harmonic drive contains a choke on the mains side,

capacitors and a choke on the AFE side. The LCL filter also includes capacitors connected against

ground potential. There are resistors connected across the capacitors for discharging these when

the LCL filter is disconnected from the input power.

Figure 6-3. Vacon LCL filter wiring diagram.

6.2.1.1 Removing HF capacitors

If a mains rectifier of another manufacturer is connected to the same input transformer, the

capacitors must be removed. Otherwise the capacitors must not be removed.

Figure 6-4 ( Fi9, Fi10 and Fi12) and Figure 6-5 (Fi13 and Fi14) have a red marking on the lead that

has to be removed from each capacitor if the interference suppression capacitors are not to be used.

Removing the lead disconnects the capacitors from ground potential.

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Ctl NX2700 Instrukcja Użytkownika Strona 32