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Connect ACX7020 to Power

Learn how to ground the ACX7020 Router and connect it to AC and DC power.

Connect Earth Ground to ACX7020 Routers

Before you begin to connect the router to earth ground, ensure that you have the following parts and tools available:

  • Grounding cable (yellow green)—6 AWG, 90 ºC wire, or as permitted by the local code (not provided).
  • Grounding lug for your grounding cable—Panduit LCD6-14AF right angle lug or equivalent (provided).
  • Two M5x10 screws for fastening the 2-hole lug to the system (provided).
  • A Phillips (+) screwdriver, number 2 (not provided)
  • An electrostatic discharge (ESD) grounding wrist strap (not provided)

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must ground the router properly before connecting power.

You must install the ACX7020 in a restricted-access location and ensure that the chassis is always properly grounded. The ACX7020 has a two-hole protective grounding terminal provided on the chassis. We recommend that you use this protective grounding terminal as the preferred method for grounding the chassis regardless of the power supply configuration. However, if additional grounding methods are available, you can also use those methods. For example, you can use the grounding wire in the AC power cord or use the grounding terminal or lug on a DC power supply. This tested system meets or exceeds all applicable EMC regulatory requirements with the two-hole protective grounding terminal.

CAUTION:
Before you connect earth ground to the protective grounding terminal of an ACX7020 router, ensure that a licensed electrician has attached an appropriate grounding lug to the grounding cable.
Figure 1: Grounding Point on the ACX7020 Router Grounding Point on the ACX7020 Router
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Grounding point

 

To ground the ACX7020 router:

  1. Ensure that all grounding surfaces are clean and brought to a bright finish before you make grounding connections.
  2. Connect the grounding cable to a proper earth ground.
  3. Place the grounding cable lug over the two-hole protective grounding terminal on the front panel of the chassis.
  4. Secure the grounding cable lug to the chassis grounding points using two M5 x 10 mm grounding screws (provided).
    Figure 2: Connect the Grounding Cable to the ACX7020 Router Connect the Grounding Cable to the ACX7020 Router
  5. 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 over it.

Connect AC Power to ACX7020 Routers

Ensure that you have a power cord appropriate for your geographical location available to connect AC power to the router.

Before you begin connecting AC power to the router:

  • Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

  • Ensure that you have connected the router chassis to earth ground.

    CAUTION:

    Before you connect power to the router, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the router (for example, by causing a short circuit).

    To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the chassis to earth ground before you connect it to power. Under all circumstances, use the protective grounding terminal on the router chassis to connect to the earth ground. The router gains additional grounding when you plug the PSM in the router to a grounded AC power outlet by using the AC power cord appropriate for your geographical location.

To connect AC power to an ACX7020 router:

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
  2. Power off the AC input appliance inlet on the source power supply.
  3. Connect the power cord to the power source outlet.
    CAUTION:

    You must use a dedicated external circuit breaker for each PSM. We recommend that you use a dedicated customer-site circuit breaker rated for 16 A , 250 VAC or as required by the local code.
  4. Press the small tab on the power cord retainer strip to loosen the loop. Slide the loop until you have enough space to insert the power cord coupler into the inlet.
  5. Insert the power cord coupler firmly into the inlet.
    Figure 3: Connect an AC Power Cord to an ACX7020 Router Connect an AC Power Cord to an ACX7020 Router
  6. Slide the loop toward the PSM until it is snug against the base of the coupler.
  7. Press the tab on the loop and draw out the loop into a tight circle.
  8. 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 over it.
  9. Power on the source power supply.

Connect DC Power to ACX7020 Routers

Before you begin connecting DC power to the router:

  • Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

  • Ensure that you have connected the router chassis to earth ground.

    CAUTION:

    Before you connect power to the router, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the router (for example, by causing a short circuit).

    To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the chassis to earth ground before you connect it to power. Under all circumstances, use the protective grounding terminal on the router chassis to connect to the earth ground.

Ensure that you have the following parts and tools available:

  • 14 AWG and 75 °C temperature rating cables (not provided)

  • An electrostatic discharge (ESD) grounding wrist strap (not provided)

  • A torque-controlled screwdriver (not provided)—A torque of 0.8–1 Nm is required to tighten the screws to the terminal block.

To connect DC power to an ACX7020 router:

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist. Connect the other end of the strap to the ESD point on the chassis.
  2. 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.
  3. Install heat-shrink tubing insulation around the power cables.

    To install heat-shrink tubing:

    1. Slide the tubing over the portion of the cable where it is attached to the lug barrel. Ensure that tubing covers the end of the wire and the barrel of the lug attached to it.

    2. Shrink the tubing with a heat gun. Ensure that you heat all sides of the tubing evenly so that it shrinks around the cable tightly.

    Figure 4 shows the steps to install heat-shrink tubing.

    Note:

    Do not overheat the tubing.
    Figure 4: Install Heat-Shrink Tubing Install Heat-Shrink Tubing
  4. Remove the screws on the terminals by using the screwdriver. Save the screws.
  5. The DC PSM has a negative terminal and a positive terminal for connecting the DC power cables labeled negative (-) and positive (+). Secure power source cables to the PSMs by screwing the ring lugs attached to the cables to the appropriate terminals by using the screw from the terminals

    1. Secure the positive (+) DC source power cable lug to the positive terminal.

    2. Secure the negative (–) DC source power cable lug to the negative 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 PSM.
    Figure 5: Connect DC Power Cable to an ACX7020 Router Connect DC Power Cable to an ACX7020 Router
  6. Verify that the power cables are connected correctly, that they do not touch or block access to router components, and that they do not drape where people could trip on them.
  7. Close the input circuit breaker.
  8. Connect the power supply to the power sources.
    CAUTION:
    Each DC PSM has a single DC input (+24 VDC, –48 VDC to –60 VDC and return) that requires a dedicated circuit breaker. We recommend that you use a dedicated customer-site circuit breaker rated for 15 A (80 V) or as required by local code.
  9. After connecting the wires to the terminals, ensure that the terminal block is covered by the provided plastic cover.