ABB BCU-02, Hardware Manual

Page: 16 / 34

16 Installation
Mechanical installation
WARNING! Do not install the control unit adjacent to electromagnetic disturbance
sources, such as relays, contactors, brake choppers, power and motor cabling.
The minimum recommended distance from such components is 200 mm (7.9 in).
ABB recommends to install metallic screening between the control unit and the source of
disturbance. This can reduce the required distance.
WARNING! Install the control unit so that air can pass freely through the
ventilation holes in the housing. Do not install the control unit directly above heat-
generating equipment.
You can install the control unit on a vertical or horizontal standard 35 × 7.5/15 mm DIN rail.
In vertical direction, you can install the unit either top side or bottom side up. If you install
the unit horizontally, the connectors must be downwards and the connector texts the right
way up.
Leave enough space for cabling, and also for replacing the memory unit and real-time
clock battery. See chapter
Maintenance (page 21) .