Huawei AR550 Series - Page 658

Figure 6-6 Structure of a 2-pin DC power terminal
NEG(-)
RTN(+)
RTN(+)
NEG(-)
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Specifications
To meet current (lower than 2 A) and ambient temperature requirements, you are advised to
use power wires with 1.0 mm
2
conductors. Table 6-10 lists the required specifications of a 2-
pin DC cable.
Table 6-10 Specifications of a 2-pin DC cable
Conductor Type
Minimum Conductor
Cross-Sectional Area
Maximum Conductor
Cross-Sectional Area
Solid
0.5 mm
2
or 20 AWG 1.5 mm
2
or 16 AWG
Twisted
0.5 mm
2
or 20 AWG 1.5 mm
2
or 16 AWG
Pin Assignments
Table 6-11 lists the pin assignments of a 2-pin DC power terminal.
Table 6-11 Pin assignments of a 2-pin DC power terminal
X1
Signal
1 RTN (+)
2 NEG (-)
Connection
A 2-pin DC power cable is connected as follows:
l The 2-pin DC terminal block is connected to the DC power socket of an industrial
switching router.
Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
6 Cables
Issue 10 (2019-03-06) Copyright © Huawei Technologies Co., Ltd. 647