Customized Alarm Input; Table 2-1 Configurations Of Monitoring Boards In The Dbs3900 - Huawei BBU3900 Hardware Description

2 DBS3900 Monitoring System

2.1 Customized Alarm Input

If a BBU monitors customer devices, customized alarms about the devices must be reported to
the BBU in the following two modes:
l
l
Monitoring Board Configuration
If a BBU monitors customer devices, customized alarms about the devices must be reported to
the BBU. The configurations of monitoring boards in the BTS3900A depend on the number of
customized alarms, as listed in

Table 2-1 Configurations of monitoring boards in the DBS3900

External Power
Input
-48 V DC/220 V AC
Customized Alarms Collected by the UPEU or UEIU
Each UPEU or UEIU in the BBU supports eight Boolean alarm inputs. A maximum of two
UPEUs or UPEU+UEIU can be configured for the BBU, which means there are 16 Boolean
alarm inputs. This method can be used for the configuration of less than 16 customized alarm
inputs.
If using this method, connect the device to be monitored to the SLPU for surge protection, and
then connect the device to the EXT_ALM port on the BBU, as shown in
2-2
The alarms are collected by the UPEU or UEIU in the BBU.
The alarms are collected by the EMUA. For details about software configurations, see the
related initial configuration guide.
Application
Scenario
Indoor DBS3900
Outdoor DBS3900
NOTE
l If backup power is required for the BBU, two UPEUs rather than UPEU+UEIU are configured.
l The analog values can be monitored only by the EMUA.
l Two USLP2s and one SLPU are delivered in a package.
l The EMUA with sensors is configured according to site requirements for the indoor DBS3900.
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Table 2-1.
Number of
Boolean Signals to
be Monitored
None
1 to 16
17 to 32
None
1 to 16
17 to 32
BBU3900
Hardware Description
Monitoring Board
Configuration
UPEU
UPEU+UEIU
UPEU+UEIU
+EMUA
UPEU
UPEU+UEIU
+(2xUSLP2+SLPU)
UPEU+UEIU
+EMUA
Figure 2-1.
Issue 11 (2010-11-10)