Chapter 2 System Structure and Components
Indicator
Normal Status
Abnormal
Status
Indication
Lit
l
AC input over/under-voltage
l
PFC output over/under-voltage
l
Over-temperature
Alarm (yellow)
Not lit
Flashing
l
Fast flashing: The communication
between the rectifier and the CSU is
interrupted.
l
Slow flashing: The rectifier is in the
sleep mode.
Fault (red)
Not lit
Lit
l
DC output over-voltage/current
l
Output fuse blows
l
Fan fault
l
Other fault
2.3 Centralized Supervision Unit
The Centralized Supervision Unit (B900-
) manages the power distribution unit,
rectifiers and batteries of the ZXDU58 B900 system.
Functions
l
Gives an audible and visual alarm and provides the protection function when the
system is faulty.
l
Collects the operational data and monitors the operations of the system.
l
Performs advanced battery management with protection functions.
l
Transmits data to the background Supervision Center (
) and receives commands
from the SC. In this way, the system can be monitored remotely.
Appearance
For the appearance of the CSU, see
Figure 2-6 Centralized Supervision Unit (B900-CSU)
1.
LED
2.
Indicators
3.
Reset button
2-5
SJ-20121116145308-001|2012-12-05 (R1.0)
ZTE Proprietary and Confidential
