Table 4-6
Ports on the PMU 11A
No.
Silkscreen
Connector
Description
1
GATE
2-pin connector
Connects to a door status
sensor
2
TEM_BAT
2-pin connector
Reserved for a battery
temperature sensor
3
COM_IN
RJ45 connector
Connects to the BBU or
upper-level device and
reports alarms to the
BBU.
4
COM_OUT
RJ45 connector
Connects to the BBU or
lower-level devices and
collects alarms from
lower-level devices.
5
COM_485
RJ45 connector
Reserved
Indicators
describes the indicators on the PMU 11A.
Table 4-7
Indicators on the PMU 11A
Silkscre
en
Color
Description
Status
Description
RUN
Green
Running status
indicator
Steady on
The PMU 11A is performing
startup, self-check, loading and
activation.
Blinking (on
for 1s and off
for 1s)
The PMU 11A is functional and
communicating with the BBU
properly. (This status does not
necessarily mean that the PMU
11A has been configured.)
Blinking (on
for 0.125s
and off for
0.125s)
The PMU 11A is functional but
unable to communicate properly.
Steady off
The PMU 11A is faulty or there is
no DC power supply.
ALM
Red
Alarm indicator Steady on
An alarm is generated.
Steady off
No alarms is generated.
BTS3900C (Ver.C)
Hardware Description
4 BTS3900C Power System
Issue 03 (2013-05-27)
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