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Connecting the MX10003 to Power

Tools and Parts Required for MX10003 Router Grounding and Power Connections

To ground and provide power to the router, you need the following tools and parts:

  • Phillips (+) screwdrivers, numbers 1 and 2

  • Socket nutdriver

  • 2.5-mm flat-blade (–) screwdriver

  • Torque-controlled driver, with a maximum torque capacity of 6 lb-in. (0.68 Nm), for tightening screws to terminals on each power supply on a DC-powered router

    CAUTION:

    The maximum torque rating of the terminal screws on the DC power supply is 6 lb-in. (0.7 Nm). The terminal screws might be damaged if excessive torque is applied. Use only a torque-controlled driver to tighten screws on the DC power supply terminals. Use an appropriately sized driver, with a maximum torque capacity of 6 lb-in. or less. Ensure that the driver is undamaged and properly calibrated and that you have been trained in its use. You may want to use a driver that is designed to prevent overtorque when the preset torque level is achieved.

  • Wire cutters

  • Electrostatic discharge (ESD) grounding wrist strap

Grounding the MX10003 Router

You ground the router by connecting a grounding cable to earth ground and then attaching it to the chassis grounding points by using two M5 pan head screws. Figure 1 shows the grounding point location on the chassis. You must provide the grounding cables (the cable lugs are supplied with the router). For grounding cable specifications, see MX10003 Router Grounding Specifications.

Figure 1: Grounding Points on the MX10003 RouterGrounding Points on the MX10003 Router
  1

Grounding point

 

To ground the router:

  1. Verify that a licensed electrician has attached the cable lug provided with the router to the grounding cable.
  2. 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.
  3. Ensure that all grounding surfaces are clean and brought to a bright finish before grounding connections are made.
  4. Connect the grounding cable to a proper earth ground.
  5. Detach the ESD grounding strap from the site ESD grounding point.
  6. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  7. Place the grounding cable lug over the grounding points on the chassis.
  8. Secure the grounding cable lug with the screws. The holes are sized for M5 pan head screws (see Figure 2).
  9. Dress the grounding cable, and verify that it does not touch or block access to router components, and that it does not drape where people could trip on it.
Figure 2: Connecting Grounding lugs to the MX10003 RouterConnecting Grounding lugs to the MX10003 Router

Connecting Power to an AC-Powered MX10003 Router

CAUTION:

Do not mix AC and DC power supplies within the same router. Damage to the router might occur.

You connect AC power to the router by attaching power cords from the AC power sources to the AC appliance inlets located on the power supplies.

To connect the AC power cords to the router for each power supply:

  1. Locate power cords that have a plug appropriate for your geographic location. For more information, see AC Power Cord Specifications for MX10003 Routers.
  2. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
  3. Power off the AC input appliance inlet on the power supply.
  4. Connect the power cord to the power supply.
  5. Insert the power cord plug into an external AC power source receptacle (see Figure 3).
    Note:

    Each power supply must be connected to a dedicated AC power feed and a dedicated customer-site circuit breaker. We recommend that you use a dedicated customer-site circuit breaker rated for 15 A (110 VAC) minimum, or as required by local code.

  6. Route the power cord appropriately. Verify that the power cord does not block the air exhaust and access to router components, or drape where people could trip on it.
  7. Power on the power supply at source.
  8. Repeat Step 1 through Step 7 for the installing the remaining power supply.
Figure 3: Connecting AC Power to the RouterConnecting AC Power to the Router

Connecting Power to a DC-Powered MX10003 Router

CAUTION:

Do not mix AC and DC power supply modules within the same router. Damage to the router might occur.

Warning:

Before performing DC power procedures, ensure that power is removed from the DC circuit. To ensure that all power is off, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position.

You connect DC power to the router by attaching power cables from the external DC power sources to the terminal on the power supply faceplate. You must provide the power cables (the cable lugs are supplied with the router). For power cable specifications, see DC Power Cable Specifications for MX10003 Router.

To connect the DC source power cables to the router for each power supply:

  1. Switch off the dedicated customer-site circuit breakers. Ensure that the voltage across the DC power source cable leads is 0 V and that there is no chance that the cable leads might become active during installation.
  2. Attach an ESD grounding strap to your bare wrist, and connect the other end of the strap to an ESD grounding point.
  3. Verify that the DC power cables are correctly labeled before making connections to the power supply. In a typical power distribution scheme where the return is connected to chassis ground at the battery plant, you can use a multimeter to verify the resistance of the –48V and RTN DC cables to chassis ground:
    • The cable with very large resistance (indicating an open circuit) to chassis ground is –48V.

    • The cable with very low resistance (indicating a closed circuit) to chassis ground is RTN.

    CAUTION:

    You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. There is no standard color coding for DC power cables. The color coding used by the external DC power source at your site determines the color coding for the leads on the power cables that attach to the terminal studs on each power supply.

  4. Remove the nuts from the terminals.
  5. Secure each power cable lug to the terminal with the nuts (see Figure 4). Apply between 5 lb-in. (0.6 Nm) and 6 lb-in. (0.7 Nm) of torque to the nuts. Do not overtighten the nuts. (Use a socket nutdriver.)
    1. Secure the positive (+) DC source power cable lug to the RTN (return) terminal.

    2. Secure the negative (–) DC source power cable lug to the –48V (input) terminal.

    CAUTION:

    Ensure that each power cable lug seats flush against the surface of the terminal block as you are tightening the nuts. Ensure that each nut is properly threaded into the terminal. Applying installation torque to the nuts when improperly threaded can result in damage to the terminal.

    CAUTION:

    You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. There is no standard color coding for DC power cables. The color coding used by the external DC power source at your site determines the color coding for the leads on the power cables that attach to the terminal studs on each power supply.

    Note:

    For information about connecting to DC power sources, see MX10003 Router DC Power Specifications.

  6. Verify that the power cables are connected correctly, that they are not touching or blocking access to router components, and that they do not drape where people could trip on them.
  7. Repeat Step 1 through Step 6 for installing the other power supplies.
Figure 4: Connecting DC Power to the RouterConnecting DC Power to the Router