Huawei NetEngine40E Hardware Description page 61

HUAWEI NetEngine40E Universal ServiceRouter
Hardware Description
Table 3-3 Description of the indicators of the PEM
Indicator
RUN
ALM
If the NE40E-X8 has a DC power supply system, four 70 A PEMs work in 2+2 backup mode.
Figure 3-7
Two -48 V power inputs are joined on the board.
After the low-frequency filtering, the two -48 V power inputs for fans Two separated RTN
inputs are joined on the board. inside the fan module.
In
RTN inputs are joined on the board.
Figure 3-7 Architecture of the NE40E-X8 DC power supply system
Table 3-4
Issue 01 (2012-09-30)
Color
Green
Red
shows details of the DC power supply system.
Figure 3-7, each DC power input contains one -48 V power input and one RTN input. Two separated
area 1
FAN
FFU
backplane
PEM A2
area 1
PEM B2
PEM A1
area 2
PEM B1
lists the technical parameters of the PEM.
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Description
Indicates normal power output. If the indicator is steady on,
it implies a normal output.
Power failure indicator. If the indicator is steady on, it
indicates the following:
 The lightning protection link of the power module has
failed.
 The power modules does not have input power.
area 2
FAN
FFU
Boards
3 NE40E-X8 Chassis Overview
47