ABB ACS800-04, Hardware Manual

Page: 32 / 118

Mechanical installation
32
Cable channel in the floor below the cabinet
When a cable channel is constructed below the cabinet, ensure that cabinet weight
lies on the sections which the floor carries.
Fastening the cabinet to the floor and wall
Fasten the cabinet to the floor and wall/roof according to the panel builder’s
instructions, e.g. with outside fastening brackets or by fastening holes inside the
cabinet.
Electric welding
It is not recommended to fasten the cabinet by welding.
If the preferred fastening methods (clamping or bolting through the holes inside the
cabinet) cannot be used, proceed as follows:
• Connect the return conductor of the welding equipment to the cabinet frame at
the bottom within 0.5 metres of the welding point.
WARNING! If the welding return wire is connected improperly, the welding circuit
may damage electronic circuits in the cabinet. Ensure that the welding fumes are not
inhaled.
Example cabinet frame viewed from above
With heavy cabinets,
support the structural
C-sections from below.
Example cabinet: side view
Cables
Prevent the cooling air flow from the cable channel to
the cabinet by bottom plates. To ensure the degree of
protection for the cabinet use the original bottom plates
delivered with the unit. With user-defined cable entries
take care of the degree of protection, fire protection and
EMC compliance.