Cabinet Design; Protection Class; Door Locking System - ABB ACS580MV Hardware Manual

Function and hardware description 35

Cabinet design

The cabinet has been designed using the MNS cabinet
system of ABB. The design consists of a skeletal frame to
which the outer panels are bolted to. Corrosion resistant
materials are used to protect the cabinet from corrosion.
The basic elements of the frame are C-shaped steel profiles
with screw holes at a regular distance of 25 mm. The
profiles are anti-corrosion-coated. The outer panels are
bolted to the C-shaped profiles with self-tapping screws.
The panels are also protected by hot-dip zinc-coating.
The outside of the doors and the side panels are painted to
enhance the appearance of the cabinet. The standard color
is RAL 7035 and RAL7032.
The cabinet's inside panels are not painted, because paint tends to reduce the
effectiveness of metallic bonding which is important for successful EMC.

Protection class


Standard protection class is IP21. IP42 is available as option.

Door locking system

All doors and removable cover plates of the drive and the transformer units are either
lockable or bolted. Additionally, the door of the INU is secured with a safety switch. The
safety switch is tied into an interlocking circuit that prevents the door from being opened as
long as the DC link of the drive is charged.
The door of the control compartment (1) is not integrated into the interlocking circuit and
can always be opened. However, the removable cover plates leading to the terminal
compartment are equipped with safety contacts that are tied into the interlocking circuit. An
Emergency off is initiated if one of these contacts is opened.