ABB ACS2000 DFE, User Manual

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ACS2000 User manual 2UEA001270 Rev. F 2-9 (28)
Chapter 2 - Power electronics and cabinet features
Stand-by mode Once the DC link is charged, it is possible to keep the drive in this state to
facilitate a more rapid start-up procedure. The losses during stand-by
mode are approximately 1% of the nominal power and are caused from
small losses from the AFE, the INU and the auxiliaries.
2.2.4.2 Grounding switch
The grounding switch is a safety device that enables safe access to the
AFE / INU compartment of the drive.
Figure 2-7 Grounding switch
When the switch is in the grounded position, the input filter, AFE, DC link,
INU and dV/dt output filter of the drive are connected to the PE (protective
earth) ground, provided none of the phase modules is extracted from the
cabinet. Refer to Figure 2-8.
Legend
1 Grounding switch handle
(Shown in grounded position)
2 Grounding switch - detailed
interior view
1
2
Frame 1
Typical Frames 2, 3 (Frame 2 pictured)
1