Introduction To The Manual; Contents Of This Chapter; Bypass Unit Introduction - ABB ACS580MV Hardware Manual

Introduction to the manual 13

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Introduction to the manual

Contents of this chapter

This manual is purposed to give an introduction of ABB Manual/Auto bypass feature which
is in-line with ACS580MV.
Manual/auto bypass is an option used as a backup for drive failure (e.g. a trip) or drive
maintenance, then the motor can be switched to bypass (DOL) mode. The bypass cabinet
follows drive standard IEC 61800-4.
GB1985 (manual bypass); GB/T11022(electrical operated manual bypass); IEC 60470
(2000), IEC 632-1 (1978), ICS3 – UL347(premium electrical operated manual bypass).

Bypass unit introduction

2 kinds of bypass can be supplied: manual bypass and auto bypass.
In manual bypass, three isolation switches are as the main components in the cabinet.
In auto bypass, three contactors are as the main components in the cabinet.
The bypass unit is integrated with drive and shipped together, no matter manual or auto
bypass.