SMA SB 3800-U - Manual (Page 45)

SB3800U-12:SE2006 SMA America 5-17
RS-485 Pinouts
2 - A (+) (Data+)
7 - B (-) (Data-)
5 - SR (Signal Ref.)
Replacing the Cover
When you have finished connecting the AC-output wires, the DC-input wires, and the
communication cables, re-check all your connections to ensure that everything is in the
right place and that all connections and knockout fittings are secure and properly
torqued. Check all of the knockout fittings on the bottom of the SB3800U to ensure that
they provide a weather-tight seal.
WARNING: Never install the SB3800U during rain or very
damp conditions. Because the SB3800U has a rain proof
enclosure, you must be sure no moisture is trapped inside
the enclosure when securing the lid.
CAUTION: Be careful not to misplace the screws or the lock
washers that attach the cover to the case, as all four screws
and lock washers are required to ensure that the cover is
grounded properly and is fully sealed to the case. Handle
the cover carefully, as even minor damage to the cover
could result in an inadequate seal between the cover and
the case, thus allowing moisture to enter the case and
damage the sensitive electronic components.
Use the following procedure to replace the cover on the SB3800U:
1. Check wire routing to ensure that no wires can interfere with proper sealing of the
cover and that no pressure will be exerted on the connections when the cover is
replaced.
2. Locate the four screws and lock washers you removed to take the cover off the
SB3800U. Make sure you have all four screws and lock washers, as all of this
hardware is necessary to ensure proper grounding and a weather-tight seal.
3. Carefully position the cover on the front of the SB3800U so that the four holes in
the cover are aligned correctly with the four threaded holes in the case.
Note: Be sure when reinstalling the four screws that the lock
washers are installed correctly. The teeth of the washers