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play_arrow Fast Track: Initial Installation
- Fast Track to Rack Installation and Power
- Onboard, Configure, and Monitor MX2008
play_arrow Overview
play_arrow Site Planning, Preparation, and Specifications
play_arrow Initial Installation and Configuration
play_arrow Maintaining Components
play_arrow Troubleshooting Hardware
- Troubleshooting the MX2008
play_arrow Contacting Customer Support and Returning the Chassis or Components
- Contacting Customer Support and Returning the Chassis or Components
play_arrow Safety and Compliance Information

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Installing an MX2008 Three-Phase Wye AC Power Cord
Installing MX2008 AC Power Supply Modules
Connect AC Power to an MX2008 Router with Three-Phase Delta AC Power Distribution Modules
Connecting AC Power to an MX2000 Router with Three-Phase Wye AC Power Distribution Modules
Connecting Power to an MX2000 Single-Phase AC Power Distribution Module
Connect Power to a Single-Phase Seven-Feed AC Power Distribution Module
Powering On a Three-Phase AC-Powered MX2000 Router

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Connecting the MX2008 to AC Power

date_range 02-Aug-24

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Installing an MX2008 Three-Phase Wye AC Power Cord

To install a three-phase wye AC power cord:

Switch off the customer site circuit breakers to the PDM being removed. Make sure that the voltage across the AC power source cord is 0 V and that there is no chance that the cord might become active during the installation process.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
Switch all the power switches on the PSM faceplates to the off (O) position.

Note:
After powering off a PSM, wait at least 60 seconds before turning it back on.
Using a number 2 Phillips (+) screwdriver, loosen the four screws on the cover of the metal wiring compartment that protects the AC terminal block.
Remove the cover of the metal AC wiring compartment.
Unscrew the retaining nut from the AC power cord.
Place the retaining nut inside the metal wiring compartment.
Put the wires of the AC power cord through the hole of the retaining nut and rubber grommet.
Put the wires of the AC power cord through the hole of the metal wiring compartment.
Connect the wires to the AC terminal block on the three-phase delta AC PDM (see Figure 1). Loosen each of the input terminal or grounding point screws, and insert the wire into the grounding point or input terminal, and tighten the screw (see Table 1 for approved AC wire gauge).
To insert wires into the terminal block that serves six PSMs:
1. Insert the grounding wire into the grounding point labeled GND.
2. Insert the wire labeled L1 into the input terminal labeled A1.
3. Insert the wire labeled L2 into the input terminal labeled B1.
4. Insert the wire labeled L3 into the input terminal labeled C1.
5. Insert the wire labeled N into the input terminal labeled N1.
Figure 1: Connecting Power to a Three-Phase Wye AC Power Distribution Module

Note:
The three-phase wye AC PDM terminal blocks will be flipped depending on which slot the PDM gets plugged into.

Note:
The color of each AC power wire might vary. The MX2008 chassis is not sensitive to phase rotation sequence—either CW or CCW will operate correctly.

CAUTION:
Wire label configuration is for Juniper Networks supplied cable only. If using your own cable, make sure you use the proper connections.
To insert wires into the terminal block that serves three PSMs:
1. Insert the grounding wire into the grounding point labeled GND.
2. Insert the wire labeled L1 into the input terminal labeled A2.
3. Insert the wire labeled L2 into the input terminal labeled B2.
4. Insert the wire labeled L3 into the input terminal labeled C2.
5. Insert the wire labeled N into the input terminal labeled N2.
Note:
The terminal connections have either slotted screws or hex screws. Use a 1/4-in. slotted screwdriver for the slotted screws. Use a 5/32-in. (4 mm) Allen wrench for the 5/16-in. hex screws.

Warning:
To protect power supplies from input voltage that may be caused by mis-wired PDMs, before reinstalling the metal cover to the wiring compartment apply AC voltage to the PDM (with disengaged PSM) to make sure that two LEDs on the PDM are lit green and that the AC voltage between AC terminal blocks A1-N1, B1-N1, C1-N1, A2-N2, B2-N2, and C2-N2 for three-phase wye PDM is not more than 264 VAC when measured with a DVM. Then turn off the AC breaker de-energizing the PDM and install the metal cover and engage all AC PSMs.

Note:
Three-phase wye AC wire assembly kits can be purchased from Juniper Networks.

Table 1: Supported Three-Phase Wye AC Wire Gauge
Wire Gauge Description

5 x 10-AWG or equivalent

5 conductor wires, each wire is 10-AWG

Note:
We recommend that you use the proper gauge wire in order for the cable clamps to hold the AC cables. Using smaller gauge wiring will result in the cable clamps not tightening properly.

Warning:
Power connections must be performed by a licensed electrician only.
Verify that the power cord wire connections are correct.
Screw the retaining nut onto the AC power cord to secure it to the metal wiring compartment.
Reinstall the metal PDM wiring cover, and using a number 2 Phillips (+) screwdriver, tighten the four captive screws on the metal AC wiring compartment.
Verify that the AC power cord is not touching or blocking access to router components, and that it does not drape where people could trip on it.
Remove the ESD grounding strap from the ESD points on the chassis. Connect the strap to an approved site ESD ground point. See the instructions for your site.
Connect the AC power cord plug to the power source.
Switch on the customer site circuit breakers to provide voltage to the AC power cord.
Remove the ESD grounding strap from the approved site ESD grounding point. See the instructions for your site. Reconnect the strap to one of the ESD points on the chassis.
Verify the LED on the PDM faceplate is lit steadily, indicating that the AC terminal block is receiving power.
Switch the power switch on the PSM to the on position (|) to provide power to the router components.

Note:
After a PDM is powered on, it can take up to 60 seconds for status indicators—such as the LEDs on the PDM, the command output displays, and messages on the LED display on the craft interface—to indicate that the PDM is functioning normally. Ignore error indicators that appear during the first 60 seconds.

Table 1: Supported Three-Phase Wye AC Wire Gauge
Wire Gauge	Description
5 x 10-AWG or equivalent	5 conductor wires, each wire is 10-AWG

Installing MX2008 AC Power Supply Modules

To install an MX2008 AC PSM:

Verify that the power switch on the PSM is in the off (O) position.
On the PSM, slide the plastic cover away from the input mode switch to expose the dual DIP switches. Move the input mode DIP switch to the on or off position for the desired power supply feed configuration (see Figure 2). For available switch positions on the AC PSM, see MX2000 AC Power Supply Module Description.

Note:
The DIP switches are used only to indicate presence of a feed. If both feeds are present, power is always drawn from feed 0. Power will be drawn from feed 1 only if feed 0 fails. A PSM failure triggers the alarm LED on the craft interface.
Figure 2: Selecting AC Power System Feed Redundancy
Using both hands, grasp the handle and slide the PSM straight into the chassis until the PSM is fully seated in the chassis slot. Tighten the two captive screws (see Figure 3).
Figure 3: MX2008 Router with AC Power Supply Modules Installed
Verify that the INP0 and/or INP1 LEDs on the PSM are lit green steadily (see Figure 4).

Note:
If you are connecting two feeds, INP0 and INP1, both LEDs on the PSM will be lit green steadily.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
Move the switch to the on (|) position.
Verify that the PWR OK LED is lit green steadily. See MX2008 AC Power Supply Module LEDs for information about MX2008 AC PSM LEDs.
Repeat Steps 1 through 7 for installing PSMs in slots 0, 1, and 2, where required.
Figure 4: MX2008 AC Power Supply Module Front View

Note:
Each PSM slot not occupied by a AC PSM must be covered by a PSM blank panel.

Connect AC Power to an MX2008 Router with Three-Phase Delta AC Power Distribution Modules

CAUTION:

Do not mix AC and DC power modules within the same router.

Warning:

Power connections must be performed by a licensed electrician only.

Note:

The MX2008, MX2010, and MX2020 routers support the same power modules (AC/DC PSMs and AC/DC PDMs).

You connect AC power to the router with three-phase delta AC power distribution modules (PDMs) by connecting the AC power cord from an AC PDM to an AC power source.

To connect an AC power cord to an AC power source:

Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
Switch off the dedicated customer-site circuit breakers. Ensure that the voltage across the AC power source cable leads is 0 V and that there is no chance that the cable leads might become active during installation.
Detach the ESD grounding strap from the approved site ESD grounding point, and connect the strap to one of the ESD points on the chassis.
Move the power switches on all the power supply module (PSM) faceplates to the off (O) position.
Verify that the correct three-phase delta PDMs are installed and secured in the chassis before connecting power cables.

Note:
The power cables must be uninstalled and removed from the three-phase delta PDM before removal of the PDM from the chassis.
Using a number 2 Phillips (+) screwdriver, unscrew the four captive screws located on either side of the metal AC wiring compartment (four screws total per PDM).
Remove the metal cover of the metal AC wiring compartment.
Unscrew the retaining nut from the AC power cord.
Place the retaining nut inside the metal wiring compartment.
Insert the wires of the AC power cord through the hole of the retaining nut and rubber grommet.
Insert the wires of the AC power cord through the hole of the metal wiring compartment.
Connect the wires to the AC terminal block on the three-phase delta AC PDM (see Figure 5). Loosen the input terminal or grounding point screw, insert each wire into the grounding point input terminal, and tighten the screw (see Table 2 for approved AC wire gauge).
Note:
The terminal connections have either slotted screws or hex screws. Use a 1/4-in. slotted screwdriver for the slotted screws. Use a 5/32-in. (4 mm) Allen wrench for the 5/16-in. hex screws.
To connect wires to the terminal block that serves six PSMs:
1. Insert the grounding wire into the grounding point labeled GND.
2. Insert the wire labeled L1 into the input terminal labeled A1.
3. Insert the wire labeled L2 into the input terminal labeled B1.
4. Insert the wire labeled L3 into the input terminal labeled C1.
Figure 5: Connecting Power to a Three-Phase Delta AC Power Distribution Module

Note:
The three-phase delta AC PDM terminal blocks will be flipped depending on which slot the PDM gets plugged into.

Note:
The color of each AC power wire might vary. The MX2008 chassis is not sensitive to phase rotation sequence—either CW or CCW will operate correctly.

CAUTION:
Wire label configuration is for Juniper Networks supplied cable only. If you are using your own cable, make sure you use the proper connections.
To connect wires to the terminal block that serves three PSMs:
1. Insert the grounding wire into the grounding point labeled GND.
2. Insert the wire labeled L1 into the input terminal labeled A2.
3. Insert the wire labeled L2 into the input terminal labeled B2.
4. Insert the wire labeled L3 into the input terminal labeled C2.
Warning:
To protect power supplies from input voltage that might be caused by mis-wired PDMs, before reinstalling the metal cover to the wiring compartment apply AC voltage to the PDM (with disengaged PSM) make sure that two LEDs on the PDM are lit green and that the AC voltage between AC terminal blocks A1-B1, B1-C1, C1-A1, A2-B2, B2-C2, and C2-A2 for three-phase delta PDM is not more than 264 VAC when measured with a digital voltage meter (DVM). Then turn off the AC breaker, de-energizing the PDM, and install the metal cover and engage all AC PSMs.

Note:
The terminal connections have either slotted screws or hex screws. Use a 1/4-in. slotted screwdriver for the slotted screws. Use a 5/32-in. (4 mm) Allen wrench for the 5/16-in. hex screws

Note:
Three-phase delta AC wire assembly kits can be purchased from Juniper Networks.

Table 2: Supported Three-Phase Delta AC Wire Gauge
Wire Gauge Description

4 x 6-AWG or equivalent

4 conductor wires, each wire is 6-AWG

Note:
We recommend that you use the proper gauge wire in order for the cable clamps to hold the AC cables. Using smaller gauge wiring results in the cable clamps not tightening properly.

Warning:
Power connections must be performed by a licensed electrician only.
Verify that the power cable connections are correct.
Screw the retaining nut onto the AC power cord to secure it to the metal wiring compartment.
Reinstall the metal PDM wiring cover, and using a number 2 Phillips (+) screwdriver, tighten the four captive screws on the metal AC wiring compartment.
Use the provided plastic cable tie to fasten the AC power cord to the PDM.
Verify that the AC power cord does not touch or block access to router components, and that it does not drape where people could trip on it.
Repeat the procedure for the other three-phase delta AC PDMs.

Table 2: Supported Three-Phase Delta AC Wire Gauge
Wire Gauge	Description
4 x 6-AWG or equivalent	4 conductor wires, each wire is 6-AWG

Connecting AC Power to an MX2000 Router with Three-Phase Wye AC Power Distribution Modules

CAUTION:

Do not mix AC and DC power modules within the same router.

Warning:

Power connections must be performed by a licensed electrician only.

To connect an AC power cord to an AC power source:

Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
Switch off the dedicated customer site circuit breakers. Ensure that the voltage across the AC power source cable leads is 0 V and that there is no chance that the cable leads might become active during installation.
Detach the ESD grounding strap from the approved site ESD grounding point, and connect the strap to one of the ESD points on the chassis.
Move the power switches on all the power supply module (PSM) faceplates to the off (O) position.
Verify that the correct three-phase wye PDMs are installed and secured in the chassis before connecting power cables.

Note:
The power cables must be uninstalled and removed from the three-phase wye PDM before removal of the PDM from the chassis.
Using a number 2 Phillips (+) screwdriver, unscrew the four captive screws located on the either side of the metal AC wiring compartment (four screws total on each PDM).
Remove the metal cover of the metal AC wiring compartment.
Unscrew the retaining nut from the AC power cord.
Insert the wires of the AC power cord through the hole of the retaining nut and rubber grommet.
Insert the wires of the AC power cord through the hole of the metal compartment.
Connect the wires to the AC terminal block on the three-phase wye AC PDM (see Figure 6). Loosen the input terminal or grounding point screw, insert each wire into the grounding point or input terminal, and tighten the screw (see Table 3 for approved AC wire gauge).
Note:
The terminal connections have either slotted screws or hex screws. Use a 1/4-in. slotted screwdriver for the slotted screws. Use a 5/32-in. (4 mm) Allen wrench for the 5/16-in. hex screws.
To connect wires to the terminal block that serves six PSMs:
1. Insert the grounding wire into the grounding point labeled GND.
2. Insert the wire labeled L1 into the input terminal labeled A1.
3. Insert the wire labeled L2 into the input terminal labeled B1.
4. Insert the wire labeled L3 into the input terminal labeled C1.
5. Insert the wire labeled N into the input terminal labeled N1.
Figure 6: Connecting Power to a Three-Phase Wye AC Power Distribution Module

Note:
The three-phase wye AC PDM terminal blocks will be flipped depending on which slot the PDM gets plugged into.

Note:
The color of each AC power wire might vary. The MX2000 series chassis is not sensitive to phase rotation sequence—either CW or CCW will operate correctly.

CAUTION:
Wire label configuration is for Juniper Networks supplied cable only. If using your own cable, make sure you use the proper connections.
To connect wires to the terminal block that serves three PSMs:
1. Insert the grounding wire into the grounding point labeled GND.
2. Insert the wire labeled L1 into the input terminal labeled A2.
3. Insert the wire labeled L2 into the input terminal labeled B2.
4. Insert the wire labeled L3 into the input terminal labeled C2.
5. Insert the wire labeled N into the input terminal labeled N2.
Warning:
To protect power supplies from input voltage that might be caused by mis-wired PDMs, before reinstalling the metal cover to the wiring compartment, apply AC voltage to the PDM (with disengaged PSM) and make sure that two LEDs on the PDM are lit green and that the AC voltage between AC terminal blocks A1-N1, B1-N1, C1-N1, A2-N2, B2-N2, and C2-N2 for three-phase wye PDM is not more than 264 VAC when measured with a digital voltage meter (DVM). Then turn off the AC breaker, de-energizing the PDM, and install the metal cover and engage all AC PSMs.

Note:
Three-phase wye AC wire assembly kits can be purchased from Juniper Networks.

Table 3: Supported Three-Phase Wye AC Wire Gauge
Wire Gauge Description

5 x 10-AWG or equivalent

5 conductor wires, each wire is 10-AWG

Note:
We recommend that you use the proper gauge wire in order for the cable clamps to hold the AC cables. Using smaller gauge wiring will result in the cable clamps not tightening properly.

Warning:
Power connections must be performed by a licensed electrician only.
Verify that the power cable connections are correct.
Screw the retaining nut onto the AC power cord to secure it to the metal wiring compartment.
Reinstall the metal PDM wiring cover, and using a number 2 Phillips (+) screwdriver, tighten the four captive screws on the metal AC wiring compartment. Apply between 10 lb-in. (1.13 Nm) to 12 lb-in. (1.35 Nm) of torque to each screw. Avoid overtightening the screws.
Use the provided plastic cable tie to fasten the AC power cord to the PDM.
Verify that the AC power cord is not touching or blocking access to router components, and that it does not drape where people could trip on it.
Repeat the procedure for the other three-phase wye AC PDMs.

Table 3: Supported Three-Phase Wye AC Wire Gauge
Wire Gauge	Description
5 x 10-AWG or equivalent	5 conductor wires, each wire is 10-AWG

Connecting Power to an MX2000 Single-Phase AC Power Distribution Module

CAUTION:

Do not mix AC and DC power distribution modules (PDMs) within the same router.

Note:

The MX2008, MX2010, and MX2020 routers support the same power modules (AC/DC PSMs and AC/DC PDMs).

To connect an AC power cord to a single-phase seven-feed or nine-feed AC power distribution module (PDM):

Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
Switch off the dedicated customer-site circuit breakers. Ensure that the voltage across the AC power source cable leads is 0 V and that there is no chance that the cable leads might become active during installation.
Detach the ESD grounding strap from the approved site ESD grounding point, and connect the strap to one of the ESD points on the chassis.
Move the power switch to the off (O) position on the PSM(s) that will be powered by the AC PDM.

Note:
After powering off a PSM, wait at least 60 seconds before turning it back on.
If a power cord retainer is installed on the PDM, remove the two thumb screws holding it in place and remove the power cord retainer.
Plug the power cords into the power sockets on the PDM. see Figure 7. Apply slight pressure so that the power cords are firmly seated in the power socket. As you plug in each power cord, the power LED for the socket lights up green.
Figure 7: Plugging into the MX2008 Single-Phase AC Power Distribution Module
Replace the power cord retainer, making sure the power cords do not touch or block access to router components.
Flip the power switch on each PSM to the on (|) position to provide power to the router components.
Verify that the LEDs on the PDM faceplate are lit steadily green, indicating that the AC terminal block is receiving power.
Remove the ESD grounding strap from the ESD points on the chassis. Connect the strap to an approved site ESD grounding point. See the instructions for your site.

Warning:

Do not touch the power connectors on the PDM. They can contain dangerous voltages.

Connect Power to a Single-Phase Seven-Feed AC Power Distribution Module

CAUTION:

Do not mix AC and DC power distribution modules (PDMs) within the same router.

To connect an AC power cord to an AC power source:

Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
Switch off the dedicated customer site circuit breakers. Ensure that the voltage across the AC power source cable leads is 0 V and that there is no chance that the cable leads might become active during installation.
Detach the ESD grounding strap from the approved site ESD grounding point, and connect the strap to one of the ESD points on the chassis.
Switch off (O) the AC power supply modules (PSMs) and disengage all AC PSMs.
Move the safety retention bar downwards and tight the captive retention screws.
Connect the powers cords to the AC PDM.
Verify that the power cords are not touching or blocking access to router components, and that it does not drape where people could trip on it.

Warning:

Do not touch the power connectors on the PDM. They can contain dangerous voltages.

Powering On a Three-Phase AC-Powered MX2000 Router

You can use this procedure for a router with either a three-phase delta AC power distribution module (PDM) or a three-phase wye AC PDM.

Verify that the power supply modules (PSMs) are fully inserted in the chassis and that the captive screws on their faceplates are tightened.
Verify that the PDMs are fully inserted in the chassis and that the captive screws on their faceplates are tightened.
Verify that each AC power cable is properly connected.
Verify that an external management device is connected to one of the Routing Engine ports on the CB-RE (AUX, CONSOLE, or MGMT).

Note:
The management Ethernet port is not functional until you have completed the initial configuration.
Turn on power to the external management device.
Switch on the dedicated customer-site circuit breakers to provide power to the AC power cables. Follow your site’s procedures.
Verify that the LEDs on both PDM and PSM light green steadily.
If any of the status LEDs indicates that the PDM is not functioning normally, repeat the installation and cabling procedures.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
Move the power switch on one of the PSMs to the on (|) position. The OK LED blinks momentarily, then lights steadily.

Note:
After a PSM and a PDM are powered on, it can take up to 60 seconds for status indicators—such as the output status LEDs on the PSM, and the command output on the craft interface—to indicate that the PSM and PDM are functioning normally. Ignore error indicators that appear during the first 60 seconds.
Verify that the PWR OK LED on the AC PSM faceplate is lit steadily, indicating that PDM is correctly installed, functioning properly, and providing power to the AC outputs.
On the external management device connected to the Routing Engine, monitor the startup process to verify that the system has booted properly.
Verify that the router powers up and goes through the system initialization process.

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MX2008 Universal Routing Platform Hardware Guide

ON THIS PAGE

Connecting the MX2008 to AC Power

Installing an MX2008 Three-Phase Wye AC Power Cord

Installing MX2008 AC Power Supply Modules

Connect AC Power to an MX2008 Router with Three-Phase Delta AC Power Distribution Modules

Connecting AC Power to an MX2000 Router with Three-Phase Wye AC Power Distribution Modules

Connecting Power to an MX2000 Single-Phase AC Power Distribution Module

Connect Power to a Single-Phase Seven-Feed AC Power Distribution Module

Powering On a Three-Phase AC-Powered MX2000 Router

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MX2008 Universal Routing Platform Hardware Guide

ON THIS PAGE

Connecting the MX2008 to AC Power

Installing an MX2008 Three-Phase Wye AC Power Cord

See Also

Installing MX2008 AC Power Supply Modules

Connect AC Power to an MX2008 Router with Three-Phase Delta AC Power Distribution Modules

Connecting AC Power to an MX2000 Router with Three-Phase Wye AC Power Distribution Modules

Connecting Power to an MX2000 Single-Phase AC Power Distribution Module

See Also

Connect Power to a Single-Phase Seven-Feed AC Power Distribution Module

Powering On a Three-Phase AC-Powered MX2000 Router

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