Huawei OptiX RTN PI-DC B20 Installation Guide

OptiX RTN PI-DC B20
Product Overview and QuickInstallation Guide

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Safety Precautions

• Customer equipment connected to the GE electrical ports of outdoor PIs must have surge protection capabilities. If customer equipment does not have surge protection capabilities, PIs must be installed indoors.
• Do not touch the connector terminals or pins of P&E cables or DC power cables. Instead, hold the insulation parts of the cables.
• Prevent conductors or hands from touching the terminals or pins in the P&E ports and DC input/output ports on PIs.
• Before installing a DC input power cable on a PI, identify the positive and negative ends of the cable. Ensure that the cable is connected correctly. Install a circuit breaker at the negative end of the external power supply device to prevent circuit loops from damaging the power cable and PI.
• Before installing a DC output power cable on a PI, identify the positive and negative ends of the cable. Ensure that the cable is connected correctly. Do not connect the output port of the external power supply device to the DC output port of the PI.
• Do not connect the output port of the external power supply device to a P&E port of the PI.
• Do not install any cables when devices are powered on.
• When making and installing cables, avoid dropping any metal scraps or other miscellaneous objects into a PI.
• After setting DIP switches, switch off the power supply. After waiting for 6 seconds, switch on the power supply again.

Product Overview

Product Components

The RTN PI-DC B20 is a full-outdoor PI with high power. It uses DC power input and transmits GE electrical signals and -48 V power signals to the full-outdoor RTN 300 equipment through an outdoor network cable.
A. Appearance

B. Port Description
The pin assignments for Ethernet service signals in the ports GE1 and GE2 are consistent with those in the ports P&E1 and P&E2. These ports all support the MDI, MDI-X, and auto MDI/MDI-X modes.
Whether the P&E ports use MDI or MDI-X mode to transmit Ethernet service signals does not affect the pin assignments for power signals.
Pin assignments for power signals in the P&E ports

C. Indicator Status Description

The P&E1 OUT and P&E2 OUT indicators inside a PI indicates the output status of the corresponding ports. Their meanings are the same as the meaning of the P&E OUT indicator on the side of the PI.

Principles and Application Scenarios

A. Principles

The RTN PI-DC B20 receives one channel of DC power signals and two channels of GE service signals.
After the PI receives DC power signals, the DC-DC processing module increases the voltage to -51.0 V.
If DC output is required, set the corresponding DIP switch to select the DC output mode.
Then, the PI outputs the DC power signals with the voltage increased to the DC output port.
If P&E output is required, set the corresponding DIP switch to select the P&E output mode.
Then, the signal coupling module couples DC power signals and GE service signals into P&E signals and outputs the P&E signals to the P&E port.
The frequencies of DC power signals and GE service signals do not interfere with each other.
Therefore, the two types of signals can be transmitted over the same twisted pair.

CAUTION

• The PI only couples GE signals and power signals but does not regenerate or strengthen GE signals. Therefore, the network cable between the UNI-side device and the powered device must not be longer than 100 m.
• The maximum distance between the PI and the powered device varies depending on the power of the powered device. For details, see technical specifications.

B. Application Scenarios

The RTN PI-DC B20 can supply power to OptiX RTN 300 full-outdoor microwave equipment series. The power supply mode of the PI varies according to powered device type.
Mapping between powered device types and power supply modes

Technical Specifications

A. Power Supply

B. Dimensions and Weight

C. Electromagnetic Compatibility and Safety Compliance

D. Deployment Environment

Installation Guide

Terminating a DC Output Power Cable with a Connector

1. Strip a power cable based on the stripping indicator.
   For the stripping length, see the stripping indicator on the PI.
2. Use a screwdriver to poke the cable locking latches out.
3. Insert the power cable. CAUTION
   • Ensure that the positive and negative lines are correctly connected.
   • Avoid dropping any miscellaneous objects (especially metal scraps) in the maintenance compartment. Clean up them immediately if any.
4. Push the cable locking latches on both sides back. Slightly pull the cable to check whether it is connected securely.

If the wires slide outward or are exposed outside the holes, remove the cable and cut the wires. Then strip and connect the cable again.

CAUTION

• A line must be inserted in the center of a hole.
• A line must be perpendicular to a hole.

Terminating a Ground Cable with an OT Terminal

1. Strip a ground cable.
   A: OT terminal
   B: ground cable
   C: exposed cable conductor
   L1: length of the exposed cable
   When you are skillful, you can determine L1 based on the length of the OT terminal lug.
   CAUTION
   When striping off the insulation layer of the ground cable, take care not to damage or nick the metal conductor of the cable.
   Mapping between the cross-sectional area of a cable conductor (C) and the length of an exposed cable (L1)

   The cross-sectionalarea of (mm 2)	L1 (mm)
   1	7
   1.5	7
   2.5	7
   4	8

2. Fit the exposed cable into the OT terminal.
   CAUTION
   Ensure that the cable conductor does not protrude more than 2 mm (L2) from the OT terminal.
3. Crimp the OT terminal lug.
   The impression left from crimping the lug may differ depending on the crimping tool used.

Terminating a DC Input Power Cable with a Connector

A. Stripping a Power Cable

1. Strip a power cable based on the stripping indicator.
   For the stripping length, see the stripping indicator on the PI.
2. Use a pair of diagonal pliers to trim off the -48 V power line.
3. Strip the 0 V ground line in the same way.

B. Installing Cord End Terminals

1. Install cord end terminals onto the cable cores.
2. Crimp all cord end terminals.

CAUTION

• After crimping a cord end terminal, check whether the cable core is exposed outside the terminal. If the cable core is exposed, crimp the terminal.
• After the power switch is turned on, sparks may be generated at exposed cable cores when an inappropriate operation is performed.

C. Connecting the Power Cable to the Connector

1. Insert the blue power line of the cable into a power cable connector.
   

   Power Cable Connector Terminal	Line
   –	-48 V power line (blue)
   +	0 V ground line (brown/black)

2. Fasten the line. CAUTION
   • After fastening a line, check whether the cable core is exposed outside the connector terminal. If the cable core is exposed, strip the cable again.
   • After the power switch is turned on, sparks may be generated at exposed cable cores when an inappropriate operation is performed.
3. Pull the line slightly. If the line is loose, fasten it again.
4. Repeat steps 1-3 to connect the ground line to the connector.

All the lines are fastened, and no cable core is exposed outside the connector.

Terminating an Outdoor Network Cable with Shielded RJ45 Connectors

1. Prepare the following tools.
2. Prepare an outdoor network cable and shielded RJ45 connectors.
   1. Core wire
   2. Aluminum foil
   3. Braid shield
   4. Outer jacket
   5. Shielded RJ45 connector
3. Strip the cable. When stripping off the outer jacket, take care not to damage the braided shield or aluminum foil.
4. Arrange the core wires according to the pin assignments and cut them neatly (exposing a length of 12 mm).8: brown
   7: white and brown
   6: green
   5: white and blue
   4: blue
   3: white and green
   2: orange
   1: white and orange
5. Insert the arranged core wires into an RJ45 connector according to the pin assignments and crimp the connector with the crimping tool.
   
   • Before crimping, ensure that the core wires are fully inserted in the RJ45 connector.
   • Use the crimping tool to crimp the connector with force.
   • After crimping, verify that the connector has been crimped tightly.
6. Cut off the exposed braid shield and materials along the edge of the connector.
7. Terminate a connector on the other end of the network cable, and then test the cable for continuity using a network cable tester.
8. Optional: Use a multimeter to measure the impedance of core wires. The impedance difference between core wires must be less than 5%.

Installing a PI

1. Open the cover of the PI.
   a. Loosen the screws on the cover of the PI to open the cover.
   b. Remove waterproof blocks from the cable holes through which cables will be routed.
2. Set DIP switches according to the plan.
   In normal conditions, you must first select the power supply mode and then power on. If you need to change the power supply mode after power-on, you need to restart the PI.
   a. The PI is used for the DC power supply onsite.
   If DC OUT mode will be used, turn DIP switch 1 for setting the power output mode upwards.
   b. The P&E1 port of the PI is used for power over the ethernet supply onsite.
   • If P&E OUT mode will be used, turn DIP switch 1 for setting the power output mode downwards.
   • If P&E1 OUT only mode will be used, turn DIP switch 2 for setting the number of P&E outputs upwards.
   • If PSE-PD mode will be used, turn DIP switch 1 for setting the power over ethernet mode downwards.
   • If force mode will be used, turn DIP switch 1 for setting the power over ethernet mode upwards.
   c. Both the P&E1 and P&E2 port of the PI is used for power over the ethernet supply onsite.
   • Turn DIP switch 1 for setting the power output mode downwards.
   • Turn DIP switch 2 for setting the number of P&E outputs downwards.
   • If PSE-PD mode will be used, turn DIP switches 1 and 2 for setting the power over ethernet mode downwards.
   • If force mode will be used, turn DIP switches 1 and 2 for setting the power over ethernet mode upwards.
3. Install a ground cable.
   CAUTION After installing the ground cable, apply a rust inhibitor to the ground point and around the ground screw.
4. Install an input power cable on the PI.
   a Connect the DC power connector to the DC power ports. CAUTION Avoid dropping any metal scraps or other miscellaneous objects on the front panel or in any ports of the PI.
   b. Install a wire clip over the shield layer of the DC power cable CAUTION  Before installing a DC input power cable, identify the positive and negative ends of the cable. Ensure that the cable is connected correctly. Install a circuit breaker at the negative end of the external power supply device to prevent circuit loops from damaging the power cable and PI.
5. Install an output power cable on the PI.
   a. Connect the DC power connector to the DC power ports. CAUTION  Avoid dropping any metal scraps or other miscellaneous objects on the front panel or in any ports of the PI.
   b. Install a wire clip over the shield layer of the DC power cable. CAUTION  Before installing a DC output power cable, identify the positive and negative ends of the cable. Ensure that the cable is connected correctly.
6. Install PI service cables to the ports GE1/P&E1/GE2/P&E2.
   CAUTION  Avoid dropping any metal scraps or other miscellaneous objects on the front panel or in any ports of the PI.
   When mapping RTN 320/380H, only the GE1, and P&E1 interfaces are used to transmit service and power supply.
   CAUTION The shield layers of all cables connected to the PI must be grounded using wire clips. Otherwise, the cables may be damaged by lightning strikes.
   a. Strip off the shield layer of a cable according to the stripping indicator.
   b. Loosen the corresponding wire clip on the PI.
   c. Route the cable through the rubber ring on the waterproof cable trough and the wire clip.
   d. Tighten the wire clip and ensure that the wire clip is completely pressed against the shield layer with no contact of the sheath.
   Tips
   You can lay out a cable and then strip it at the wire clip.
   CAUTION When you strip a cable using this method, pay attention to the following points:
   1. Ensure that the cable has been connected to the corresponding PI port and laid out in the cable trough before you strip the cable. Ensure that the stripping length matches the wire clip size. (See the preceding CAUTION.)
7. Close the cover of the PI and tighten all the screws on the cover.
   • Tighten the screws in sequence, as shown in the following figure.
   • Tighten all the screws on the cover (2.8±0.28 N·m).
8. (Optional) Mount the PI onto a wall.
   a. Drill holes for mounting the PI.
   Determine the positions for mounting the PI on the wall, drill holes, and install bolts. If multiple PIs need to be mounted, reserve at least 50 mm of space around each PI for ventilation.
   b. Mount the PI onto the wall. CAUTION
   • Before fastening the PI onto the wall, hole the PI to prevent it from falling down.
   • Before fastening the PI, ensure that its service cable holes all face downwards.
9. (Optional) Mount the PI onto a pole or tower.
   a. Route hose clamps through mounting holes and fasten the hose clamps on the pole or tower.
   b. Install the PI on the support. CAUTION
   • Before fastening the PI onto the pole or tower, hole the PI to prevent it from falling down.
   • Before fastening the PI, ensure that its service cable holes all face downwards.

Connection Between the PI and the RTN 300

• When the RTN 320 is installed high on a tower, maintenance personnel cannot perform off-tower maintenance through WLAN. It is recommended an outdoor network cable be preconnected to the P&E2 port on the PI so that follow-up NE access and maintenance can be performed by connecting a PC to the GE2 port on the PI.
• Local maintenance in such a way applies to the RTN 320, RTN 320F, and RTN 380AX (P&E+DC option). The RTN 320 is used as an example here.
• For the RTN 320, either the NMS/GE port or the independent NMS port can be connected to a network cable for connection to the NMS, but they cannot both be connected to a network cable.

CAUTION Correct DIP switch setting when a PI is used for P&E power supply for the RTN 320:

• DIP switch 1 (for setting the power output mode) turned on (P&E OUT mode)
• DIP switch 2 (for setting the number of P&E outputs) turned off (P&E1 OUT only mode)

• When the RTN 380 is installed high on a tower, maintenance personnel cannot perform off-tower maintenance through WLAN. It is recommended an outdoor network cable be pre-connected to the P&E1 or P&E2 port on the PI so that follow-up NE access and maintenance can be performed by connecting a PC to the GE1 or GE2 port on the PI.
• For the RTN 380 (V100R002 or later), a network cable can be connected to the GE electrical port. If this is the case, you need to set the GE electrical port connected to the Web LCT as an NMS port by using the NMS, or configure the network adapter of the PC to enable the PC to receive and transmit IP packets carrying DCN VLAN IDs.
• Local maintenance in such a way applies to the RTN 380, RTN 380H, RTN 380A, and RTN 380AX (P&E option). The RTN 380 is used as an example here.

CAUTION
Correct DIP switch setting when a PI is used for P&E power supply for the RTN 380:

• DIP switch 1 (for setting the power output mode) turned on (P&E OUT mode)
•  DIP switch 2 (for setting the number of P&E outputs) turned off (P&E1 OUT only mode)

Checking the Installation