LOW HARMONIC CABINET DRIVE vacon • 51
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7
7. LOW HARMONIC CABINET DRIVE
This chapter describes the functionalities of control devices (switches, push-buttons and LED
lamps) of the NXC low-harmonic drive (mechanical units AF9-14).
7.1 NXC Low-Harmonic Cabinet Pre-Charging and
MCCB Operating Instructions
There are three different ways to control the DC pre-charging circuit and the circuit-breakers
(MCCB) of the low harmonic drive. The desired control place or the manner of control can be
selected with the
REM-MAN-AUTO
selector switch (-S6). The three possible control places/ways
are:
• MAN – Manual operation by the
0-1-Start
switch on the cabinet door
• REM – Remote operation with signals to the control terminals
• AUTO – Automatic operation which automatically pre-charges and closes the MCCB when
the supply voltage is energized
Figure 25. MCCB Control selector switch (-S6)
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