ABB BCU-01, Руководство по оборудованию

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BCU-01/11 control units 11
Mechanical installation
WARNING! Do not install the control unit in the immediate vicinity of
electromagnetic disturbance sources, such as relays, contactors, brake
choppers, power and motor cabling. The minimum recommended distance
from such components is 200 mm. We recommend to install metallic screening
between the control unit and the source of disturbance. This can reduce the required
distance.
WARNING! Mount the control unit so that air can pass freely through the
ventilation holes in the housing. Avoid mounting directly above heat-
generating equipment.
You can mount the control unit on a vertical or horizontal standard 35 × 7.5/15 mm
DIN rail. In vertical direction, you can mount the unit either top or bottom upwards.
When mounting the unit horizontally, the connectors must be downwards and the
connector texts the right way up.
Leave enough space for cabling, and replacing the memory unit and real-time clock
battery. See sections
Replacing the real-time clock battery
,
Replacing the memory
unit
and
Replacing the SD/SDHC memory card
on page
15
.

Installing the control unit
The control unit is grounded through the DIN rail.