Huawei eRRU Series User manual

0
eRRU Installation Modes
Installing the eRRU on a Pole
b
Normal pole
推荐抱杆直径值为80mm
c
Common Requirements
a
Special pole
mm
In this document, eRRU3232 is used as an example. Difference in
installation and operation of other eRRU products are also described.
CAUTION
•In all scenarios, the eRRU must be installed vertically.
•Do not stand the eRRU upright because the load-bearing capacity of the RF ports at the bottom of the eRRU is low.
•Place a foam pad or cardboard on the ground to protect the housing of the eRRU from damage before the binding.
Installing the Mounting Kits on the Wall eRRU Installation Process
•For a single RRU, the wall can bear four
times of the weight of an RRU.
•Expansion bolts must be tightened to 30 N·m
to ensure that the bolts work properly and the
wall remains intact without cracks in it.
NOTE
Before installing the RRU, check the RRU and
accessories based on the equipment packing list and
ensure that all materials are complete.
NOTE
Start
End
Conduct power-on check
(slide 14)
Check the hardware
installation (slides 13 and 14)
Install RRU cables (slides 8
to 13)
Unpack and Inspect the
Equipment
Install eRRUs on a
pole (slides 4 and
5)
Install eRRUs on
the wall (slide 6)
eRRU Quick Installation Guide V100R005C00 02

1
Installing a single RRU
a
1200 mm to 1600 mm
1. Determine a position for installing
the mounting kits.
Installing eRRUs on a Pole (60 mm ≤ Pole Diameter ≤ 114 mm)
Check whether the
hoist clamp on the
main mounting
bracket is secured
properly.
CAUTION
2. Loosen the two M10 nuts on the mounting
kits, and horizontally remove one end of the
M10 bolt from the U notch.
3. Install the bracket assembly on a pole. Then,
place the removed end of the bolt into the U notch.
5. Install the RRU on the main mounting
bracket until the RRU snaps shut.
- Do not remove the plastic screw caps from the bolts on the mounting kits.
- Tighten the two dual-nut bolt assemblies alternatively. After the main and
auxiliary mounting bracket are secured properly, measure the spacing between
the brackets on both sides and ensure that the spacing is the same on the two
sides.
Auxiliary mounting
bracket
Main mounting
bracket
4. Tighten the nut to secure the bracket assembly
to the pole.
Install the Attachment plate on
eRRU3251,eRRU3253,
eRRU3255.
CAUTION

2
Installing eRRUs on a Pole (60 mm ≤ Pole Diameter ≤ 114 mm)
Installing two RRUs on a pole
b
1. Install the first RRU.
4. Installing the second RRU.
The distance between the bottom of the hoop of the second eRRU and
that of the first eRRU is the height of an eRRU module.
3. Interchange the cover plate in the front and the attachment plate and stainless steel
screws at the rear of the second RRU.
NOTE

1. Place the auxiliary mounting bracket
against the installation position, use a
level to verify that the auxiliary mounting
bracket is placed horizontally, and then
mark anchor points with a marker.
3
196 mm 496 mm
2. Drill holes at the anchor points, and then
insert expansion bolt assemblies.
Do not screw the expansion bolt entirely into the wall. Instead,
leave 20 mm to 30 mm of the expansion bolt outside the wall.
When installing the RRU on the wall, the expansion bolts must
be tightened to 30 N·m to ensure the bolts work properly and
the wall remains intact without cracks in it.
Installing the eRRU Mounting Kits on the Wall
CAUTION
Level
1200 mm to 1600 mm
Wall or
other
obstacles
3. Use the two removed M8 expansion
bolts to secure the main mounting
brackets to the wall. 4. Install the RRU on the main mounting
bracket until the RRU snaps shut.
when installing an expansion
bolt , discard the plastic washer.
CAUTION

4
Installing a single eRRU
a
Installing an eRRU on a special pole(114mm ≤ Pole Diameter ≤ 220mm)
1. Determine a position for installing
the hold hoop. (Unit: mm)
2. Pass the hold hoop through the main
mounting bracket of eRRU. Mount the hold
hoop and mounting bracket’s assembly on the
pole and have them tightened, with a tightening
torque of 28N.m.
3. Install the eRRU on the main mounting
bracket until the eRRU snaps shut.
When installing the eRRU, do
not loosen the connecting
screw. Loosen it downwards
when removing the eRRU.
Mounting the second eRRU is similar to
the way for mounting the first eRRU. The
distance between the bottom of the hold
hoop of the second eRRU and that of the
first eRRU is the height of an eRRU
module.
During back to back installation, it is
recommended that removing the
backward conversion bracket of the
second eRRU to the front, insure the
cabling cavities of the two eRRUs are in
the same direction.
b Installing two eRRUs
Installing eRRUs in Special Scenarios

5
1. Prepare an RRU PGND cable and add an OT terminal to each end of the cable.
2. Connect the M6 OT terminal at one end of the PGND cable to the ground terminal at the
bottom of the RRU and the M8 OT terminal at the other end to the external ground bar.
1. Connect the Type N connector at one end
of the RF jumper to the ANT port and the
other end to the external antenna system.
2. Waterproof the connectors of the RF
jumper by adopting the 1+3+3 waterproof
method.
Installing the PGND Cable
a
Installing the RF Jumper
b
Installing eRRU Cables（The eRRU3232 is taken as an example.
Operations for other eRRU products are similar.）
1.When eRRU3253 8T8R is equipped with 8paths antenna for routine use, the
calibration port is required to connect to the antenna.
2. If eRRU3253 paths need to be divided, do not connect any cable to the
calibration port and waterproof the calibration port.
If a filter is provided, connect it to the eRRU
as shown in the figure above.
Crimp OT terminals in correct positions.
CAUTION
CAUTION

6
2. Open the cable clip.
Opening the Cabling Cavity
c
Installing eRRU Cables（The eRRU3232 is taken as an example.
Operations for other eRRU products are similar.）
Cabling Cavity
Cable clip
Cable
trough
Pull the cabling cavity cover
to the hanging position.
1. Loosen the screws on the cover plate
for the cabling cavity, and pull the hander
to open the cover of the cabling cavity.
Installing the Power Cable
d
1. Prepare RRU power cable connectors. DC RRU: Add a tool-less female connector (pressfit type) to the
RRU power cable by referring to the description of preparing cables delivered with the RRU.
2. Connect the tool-less female connector (pressfit type) at one end of the RRU power cable to the power
supply socket at the bottom of the RRU.
Installing a DC Power Cable Installing an AC Power Cable
Ground
terminal
Cable
hole
Power cable
connecting the
AC power
equipment and
SPM60A
Cable Connections in the SPM60A
Power cable
connecting an
SPM60A and
RRU
•When the remote distance of the RRU is more than 40 m
but less than or equal to 100 m, the RRU is connected to
the 3.3 square-meter DC power cable and then to the 8.2
square-meter DC power cable on the power supply device
through an OCB adapter.
•Ensure that the exposed shield layer of the power cable is
properly tightened using the cable clip.
The 1+3+3 waterproof is required for
AC cable connectors on the eRRU side.
Note that the waterproof tape on the
eRRU3232 (AC) side must be wrapped
away from the four fastening screws on
the bottom of the power connector. After
wrapping the tape upwards to the
connector bottom and connecting it to a
flange base, use cable ties to bind the
two ends of the tape.

7
Install the optical fiber in the cable clip near the power cable to leave some slack at the bend.
Tighten the screws on the cable clip to 1.4 N·m.
1. Lower the puller of the optical module, insert an optical module into the CPRI0/IR0 port on the
RRU, and raise the puller.
Installing a CPRI optical fiber
e
Installing eRRU Cables
5. Label the installed cable.
4. Lay out the cable and bind the cable using cable ties.
2. Remove the optical fiber cap and connect one end of the optical fiber to the optical module
on the RRU. If one optical fiber is used, the port connected to the optical module is
CPRI0/IR0 by default.
3. Connect the other end of the optical fiber to the optical module on the BBU.
•The optical modules to be installed must match CPRI rates.
•The two optical modules connected to the same optical fiber must of the same specification.
•The performance of an optical module that is exposed to air for more than 20 minutes may be abnormal.
Therefore, you must insert an optical fiber into an unpacked optical module within 20 minutes.
CAUTION
CAUTION

8
RRU PGND
cable CPRI optical fiber (CPRI0/IR0
port preferred)
Cable Connections
f
Installing eRRU Cables
After the eRRU cables
are installed ,ensure
that the vacant cable
troughs in the cabling
cavity are insert
waterproof blocks.
1 2 3
RRU RF jumper
Cable Connections for an eRRU3232 (DC) Cable Connections for an eRRU3232 (AC)
RRU power cable
4
Cable Connections for an eRRU3251 (DC) Cable Connections for an eRRU3251 (AC)
Cable Connections for an eRRU3255 (DC) Cable Connections for an eRRU3255 (AC)

9
eRRU PGND cable
eRRU DC power cable
Cable Connections
f
Installing eRRU Cables
1
2
3
4
eRRU RF jumper
Closing the Cover Plate for an RRU Cabling Cavity
g
Installing the eRRU Antenna
h
The RRU antenna ports are connected to the RF ports at the bottom of the RRU in sequence through RF
jumpers. In addition, the antenna ports are sealed using the 1+3+3 waterproof method. For details, see
Appendix c.
For details about matched RRU antenna specifications, see Antenna Technical Description. For details
about how to install antennas, see Hardware Installation Guide.
eRRU3253 Cable Connections
CPRI optical fiber (CPRI0/IR0 port preferred)
In indoor or outdoor scenarios, retain the dustproof caps on the unused antenna connectors and seal the
connectors using the 1+3+3 waterproof method. For details, see Appendix c.
CAUTION
Push down
the cabling
cavity cover
from the
hanging
position.

Cable
Connector Type
Connected to...
PGND cable and
equipotential cable (cable
diameter greater than or
equal to 16 mm2)
OT terminal (M6)
RRU ground bolt
OT terminal (M8)
External ground bar/ground bar of the surge protection box
Power cable
Tool-less female connector (pressfit
type) or 3-pin round connector
Power supply port on the RRU
Bare wire
External power system (with a connector added depending on
the actual condition)
CPRI optical fiber
The distance between the
RRU and the BBU does
not exceed 100 m.
DLC connector
The 1A and 1B ends are connected to the CPRI0/IR0 port on
the RRU cabling cavity.
DLC connector
The 2A and 2B ends are connected to the optical port on the
BBU baseband board.
CPRI single-mode pigtail
The distance between the
RRU and the BBU
exceeds 100 m.
DLC connector
The 1A and 1B ends are connected to the CPRI0/IR0 port on
the RRU cabling cavity.
FC connector
The 2A and 2B ends are connected to the fiber splice tray.
RF feeder
Type N male connector
RF port on the RRU
Type N male connector
Antenna
10
Cable List
i
Installing eRRU Cables
Checking the eRRU Hardware Installation
Checking the Device Installation
a
NO. Check Item
1 The position for each device conforms to the engineering drawing and meets the space requirement. Sufficient
space is reserved for equipment maintenance.
2 When installing the RRU on the pole, secure the bracket and ensure that the devices are tightened properly.
3 When installing the RRU on the wall, the holes in the auxiliary bracket are well aligned with those for expansion
bolts. The mounting bracket is placed against the wall securely and evenly.
4 Waterproof blocks are securely installed in vacant cable troughs of the RRU cabling cavity, and the cover plate for
the cabling cavity is securely installed. In addition, vacant RF ports are covered with dustproof caps and the caps
are tightened.
5
The optical modules at both ends of the optical fiber have the same specifications, rate, and transmission distance.
6
The eRRU works properly. The indicators run properly.
7
Labels are correct, legible, and complete at both ends of each cable, feeder, and jumper.
DC AC

11
Checking the eRRU Hardware Installation
Checking the Cable Installation
b
NO. Check Item
1 The PGND cable is green and yellow. The NEG (-) cable is blue and the RTN (+) cable is black.
2 None of power cables and PGND cables can be short-circuited or reversely connected.
3 Bind PGND cables, power cables, and signal cables separately.
4 The bare wires and lug handles at the wiring terminals are tightly wrapped up with PVC insulation tape.
5 The protection grounding of the equipment room must share one set of grounding body with the surge
protection grounding device.
6 There are no connectors or joints on each power cable or PGND cable.
7 The connectors of the signal cables are securely connected.
8 The bending radius of the cables must meet the requirement to prevent power loss.
9 Check the shield layer of the power cable and ensure that it is properly connected.
10 Waterproof the connected or spare type N connectors.
After the RRU is installed, power it on within 24 hours. If you power off the RRU for maintenance, you must
restore power to it within 24 hours.
Checking the Power-on State of an eRRU
No
Yes
Yes
No
a
b
aThe eRRU3232 (DC) and
eRRU3253 (DC) supports:
-36V DC ～-57V DC power
supply.
The eRRU3251 (DC) and
eRRU3255 (DC) supports:
-36V DC ～-60V DC power
supply.
The AC eRRU supports:
100V AC ～240V AC power
supply.
bFor the RRU module, the RUN
indicator is on for 1s and off for
1s and the ALM indicator is
steady off.
Start
Do cables of the
RRU link normal?
End
Power on the RRU
Are the LEDs
on the RRU
normal？
Rectify faults
Power off the RRU and
rectify faults
CAUTION
14

Auxiliary mounting bracket
12
1. Bind the RRU and the main and auxiliary mounting brackets properly using a lifting sling.
2. Use a fixed pulley to hoist the RRU and mounting kits
onto the tower separately.
1. After climbing up to the tower, installation engineer A secures the fixed pulley to the tower platform support and
leads the lifting sling through the fixed pulley.
2. Installation engineer C binds the eRRU and mounting kits using the lifting sling and secures the traction sling to the
RRU handle.
3. Installation engineer B pulls the lifting sling downwards, and installation engineer C pulls the traction sling outwards
to protect the RRU and mounting kits from colliding with the tower.
4. Installation engineer A catches the RRU and mounting kits and then unties the sling.
The preceding hoisting procedure is for reference only.
•When hoisting the RRU and mounting kits onto the tower,
protect them from colliding with the tower.
•Hoist the RRU onto the tower before it is installed on a pole.
Hoisting the eRRU and Mounting Kits
a
Appendix
Do not hoist only the RRU hander onto the tower. Do
not fasten the lifting sling on the cable cavity hander.
Otherwise, the lifting sling may fall down, thereby
damaging devices or causing personal injuries.
Main mounting bracket
NOTE
WARNING
CAUTION

13
13
Appearance of the tool-less female connector (pressfit type)
1. Open the cover plate for the cabling cavity, take out the tool-less
female connector (pressfit type), and determine the length of the
power cables for different operations based on the labels on the
cover plate for the cabling cavity.
2. Use the cable cutter or cable stripper to strip the cable sheath
off the power cable based on the determined length.
3. Strip the cable sheath off each core wire.
Tool-less female connector
(pressfit type)
4. Add a tool-less female connector (pressfit type) to two core wires.
Preparing the Tool-less Female Connector （The eRRU3232 is taken as
an example. Operations for other eRRU products are similar.）
b
Appendix
5. Strip the sheath based on the determined length,
with the 18 mm shield layer exposed.
NEG(-)
Shield layer
-48 V DC power cable RTN(+)
The length of sheath to be stripped must be
consistent with that of the notch in the tool-less
female connector (pressfit type), that is 8 mm.
b. Connect the blue core wire labeled NEG(-) to the 2 or - port
and the black/brown core wire labeled RTN(+) to the 1 or +
port on the tool-less female connector (pressfit type)
securely, and then push back the sliding blocks.
a. Use a flat-head screwdriver to push sliding blocks.

14
Materials: waterproof tape and PVC insulation tape
Wrap the connector with three
layers of waterproof tape.
•Before wrapping the waterproof tape, stretch the tape evenly until the length of the
tape is twice of the original length.
•Do not stretch the PVC insulation tape before wrapping.
•Wrap each layer of waterproof tape around the connector tightly and neatly, and
ensure that each layer of waterproof tape overlaps more than 50% of the preceding
layer and that all waterproof tape is completely adhered.
•Ensure that the side with adhesive tape is covered on the wrapped tape.
Sealing Connectors of RF Cables Using the 1+3+3 Waterproof Method
c
Wrap the first layer of PVC
insulation tape.
Bind the both ends of the tape by
cable tie.
Reserve a
length of 3
mm to 5 mm
when cutting
the cable tie
5 mm
135 mm
Appendix
5 mm
105 mm
Wrap the connector with three
layers of insulation tape.
5 mm
135 mm
CAUTION

15
1. Use a guarded blade utility to strip the sheath of the power cable about 63 mm to expose the shield layer.
2. Tightly wrap the copper of the grounding clip on the cable shield layer and tightly bind copper with
cable ties. Cut off the ties along the ends of the ties evenly without leaving sharp edges.
3. Wrap the grounding clips with three layers of waterproof tape and three layers of PVC insulation tape.
Binding hole for the RRU power
cable (≥ 6 mm2)
12 AWG/4 mm²
Binding hole for the
RRU power cable
Grounding clipRRU power cable
The grounding pieces must be wrapped up
with waterproof tape and PVC insulation tape
according to the instructions.
In this procedure, the waterproof tape and
PVC insulation tape to be wrapped are not
included in the grounding pieces and need to
be prepared additionally.
Cut the tie wraps 3 mm to 5 mm away from
cable tie heads.
Wrap the connector with three
layers of waterproof tape. Then, wrap the connector
with three layers of PVC
insulation tape.
Cable ties
Wrap one or
two layers of
waterproof tape
and then wrap
the clip
completely.
Note: The bending radius of
the PGND cable is shown in
the figure on the right.
Cable ties
Grounding clip
The minimum
bending radius for
the PGND cable is
200 mm.
Power cable
Installing a Ground Clip for the Power Cable
d
Appendix
NOTE