Huawei BBU3900 Installation Manual page 20

Installing the BBU in the TMC
c
Installing the BBU Cables
Procedure for installing
the TMC alarm cable:
a. Fix the RJ45 connector
at one end of the alarm
cable to the EXT_ALM1
port on the BBU.
b. Connect the two bare
terminals X1.4 (blue) and
X1.5 (white) to the alarm
wiring terminals of the
door status sensor.
c. Connect the two bare
terminals X1.1 (white)
and X1.2 (orange) to the
OUT1+ and OUT1-
alarm wiring terminals on
the APMI.
d. Connect the two bare
terminals X1.3 (white)
and X1.6 (green) to the
alarm wiring terminals of
the DCDU.
d
Checking the Power-On Status of the BBU
Check the power-on status of the BBU. For details, see Page 12.
APMI panel
19
Door status
sensor