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Connecting the SRX1500 to Power

Required Tools and Parts for Grounding the SRX1500 Services Gateway

To ground and to provide power to the services gateway, you need the following tools:

  • Phillips (+) screwdrivers, numbers 1 and 2

  • Electrostatic discharge (ESD) grounding wrist strap

  • Wire cutters

Connecting the SRX1500 Services Gateway Grounding Cable

You ground the services gateway by connecting a grounding cable to earth ground and then attaching it to the chassis grounding points located on the back panel of the device using two metric M5 x 0.8, 12-mm-long grounding screws.

You must provide the following items:

  • Two metric M5 x 0.8, 12-mm-long grounding screws

  • Grounding cables

  • Cable lugs (for example, Panduit LCC6-10A-L)

CAUTION:

Before you connect power to the services gateway, 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 services gateway (for example, by causing a short circuit).

To ground the services gateway:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis. For more details, see Prevention of Electrostatic Discharge Damage.
  2. Ensure that all grounding surfaces are clean and brought to a bright finish before grounding connections are made.
  3. Connect the grounding cable to a proper earth ground.
  4. Place the grounding cable lugs over the grounding points (sized for metric M5 x 0.8, 12-mm-long grounding screws) on the side of the chassis.
    Figure 1: Connecting the Grounding Cable to the SRX1500 Services GatewayConnecting the Grounding Cable to the SRX1500 Services Gateway
  5. Secure the grounding cable lugs to the grounding points, first with the washers, then with the screws.
  6. Dress the grounding cable and verify that it does not touch or block access to the services gateway components and that it does not drape where people could trip on it.

Installing an AC Power Supply on the SRX1500 Services Gateway

To install an AC power supply:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Prevention of Electrostatic Discharge Damage.
  2. Using both hands, slide the power supply straight into the chassis until the power supply is fully seated in the chassis slot. The power supply faceplate should be flush with any adjacent power supply faceplate (see Figure 2).
    Figure 2: Installing an AC Power Supply on the SRX1500 Services GatewayInstalling an AC Power Supply on the SRX1500 Services Gateway
  3. Attach the power cord to the power supply. Use a power cord retainer to hold the power cord in place.
    Figure 3: Connecting the AC Power Cord on the SRX1500 Services GatewayConnecting the AC Power Cord on the SRX1500 Services Gateway
  4. Attach the power cord to the AC power source, and switch on the dedicated facility circuit breaker for the power supply. Follow the ESD and connection instructions for your site. If the power supply is correctly installed and functioning normally, the PWR LED glows steadily.
Note:

If more than one power supply is being installed, ensure the following:

  • Connect power cords to both the power supplies.

  • Connect each power supply to a DC power feed.

If both power supplies are plugged in and receiving power, the RPS LED glows solid green.

Connecting the SRX1500 Services Gateway to an AC Power Supply

CAUTION:

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

You connect AC power to the services gateway by attaching the power cord from the AC power source to the AC appliance inlet located on the power supply.

To connect the services gateway to an AC power supply:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the front of the chassis.
  2. Insert the appliance coupler end of the power cord into the appliance inlet on the power supply.
  3. Insert the power cord plug into an external AC power source receptacle.
    Note:

    Each power supply must be connected to a dedicated AC power feed and a dedicated external circuit breaker. We recommend that you use a 15 A (250 VAC) minimum, or as permitted by local code.

  4. Dress the power cord appropriately. Verify that the power cord does not block the air exhaust and access to services gateway components or drape where people could trip on it.
Note:

The services gateway must be connected to earth ground during normal operation. The protective earthing terminal on the side of the chassis is provided to connect the services gateway to ground.

CAUTION:

We recommend using a surge protector for the power connection.

Installing a DC Power Supply on the SRX1500 Services Gateway

To install a DC power supply:

  1. 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. 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 (O), and tape the switch handle of the circuit breaker in the OFF position.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. For more information about ESD, see Prevention of Electrostatic Discharge Damage.
  3. Orient the power supply so that the locking lever is on the left as shown in Figure 4.
    Figure 4: Installing a DC Power Supply on an SRX1500 Services GatewayInstalling a DC Power Supply on an SRX1500 Services Gateway
  4. Using both hands, slide the power supply straight into the chassis until the power supply is fully seated in the chassis slot. The power supply faceplate should be flush with any adjacent power supply faceplate.
  5. Tighten the captive screws on the lower edge of the power supply faceplate.
  6. Remove the clear plastic cover protecting the terminal studs on the faceplate.
  7. 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 ohm output of the –48V and RTN DC cables to chassis ground. The cable with very large resistance (indicating an open circuit) to chassis ground will be –48V and the cable with very low resistance (indicating a closed circuit) to chassis ground will be 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.

  8. Using a number 2 Phillips screwdriver, remove the screws and square washers from the terminal studs.
  9. Secure each power cable lug to the terminal studs, first with the square washer, then with the screw. Apply between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to each screw.
    1. Attach the positive (+) DC source power cable lug to the RTN (return) terminal.
    2. Attach the negative (–) DC source power cable lug to the –48V (input) terminal.
    Figure 5: Securing the Power CablesSecuring the Power Cables
  10. Replace the clear plastic cover over the terminal studs on the faceplate.
  11. Verify that the power cables are connected correctly, that they are not touching or blocking access to services gateway components, and that they do not drape where people could trip on them.
  12. Remove the tape from the switch handle of the circuit breaker on the panel board that services the DC circuit and switch the circuit breaker to the ON position (|). Observe the status LEDs on the power supply faceplate. If the power supply is correctly installed and functioning normally, the POWER LED glows solid green on the services gateway front panel.
Note:

If more than one power supply is being installed, turn on all power supplies at the same time.

If both power supplies are plugged in and receiving AC power, the RPS LED glows solid green.

Connecting the SRX1500 Services Gateway to a DC Power Supply

You connect DC power to the services gateway by attaching power cables from the external DC power sources to the terminal studs on the power supply faceplates.

Warning:

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must properly ground the services gateway chassis before connecting power. See Connecting the SRX1500 Services Gateway Grounding Cable for instructions.

Warning:

Before performing the following procedure, 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 (0), and tape the switch handle of the circuit breaker in the OFF position.

CAUTION:

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

CAUTION:

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

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

  1. Switch off the dedicated facility 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. Remove the clear plastic cover that protects the terminal studs on the faceplate.
  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 ohm output of the -48V and RTN DC cables to chassis ground. The cable with very large resistance (indicating an open circuit) to chassis ground will be -48V, and the cable with very low resistance (indicating a closed circuit) to chassis ground will be 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 screws and square washers from the terminals, using a Phillips (+) screwdriver, number 2.
  5. Secure each power cable lug to the terminals with the square washers and the screws. Apply between 23 in.-lb (2.6 Nm) and 25 in.-lb (2.8 Nm) of torque to each screw.
    • Secure each positive (+) DC source power cable lug to a RTN (return) terminal.

    • Secure each negative (–) DC source power cable lug to a -48V (input) terminal.

  6. Replace the clear plastic cover over the terminal studs on the faceplate.
  7. Verify that the power cables are connected correctly, that they are not touching or blocking access to services gateway components, and they do not cause a tripping hazard.
  8. Repeat Steps 1 through 7 for the second power supply, if you are installing one.
Note:

If power is lost to the services gateway, the Power-On/Power-Off state is retained. For example, if the services gateway loses power while the device is on, when power returns, the device will still be in the On state.

Powering On the SRX1500 Services Gateway

To power on the services gateway:

  1. Ensure that you have connected the power supply to the device.
  2. Insert the plug of the power supply adapter into an AC or DC power source receptacle.
    1. Using AC power supply—Insert the appliance coupler end of the power cord into the appliance inlet on the power supply and the power cord plug into an external AC power source receptacle.

    2. Using DC power supply—Connect DC power cables to the A+ and A- terminals and the other ends to an external DC power source. If you have two DC power sources and wish to deploy A/B feed redundancy for the services gateway, also connect DC power cables to the B+ and B- terminals and the other ends to an external DC power source.

      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 terminals on the power supply.

  3. Turn on the power to the AC or DC power receptacle.

The device starts automatically as the power supply completes its startup sequence. The PWR LED (on the front panel of the chassis) lights up during startup and remains solid when the services gateway is operating normally.

Powering Off the SRX1500 Services Gateway

To power off the device, press the Power button on the front of the device and hold it for 10 seconds. To remove power completely from the services gateway, unplug the AC power cord or DC power supply cable.

Note:

Graceful shutdown is not supported on the SRX1500 Services Gateway.

After powering off a power supply, wait at least 60 seconds before turning it back on. After powering on a power supply, wait at least 10 seconds before turning it off.

When the system is completely powered off and you turn on the power supply, the services gateway starts as the power supply completes its startup sequence. If the services gateway finishes starting and you need to power off the system again, first issue the request system halt command.

Note:

The fans in the power supply continue to rotate even after you power off the SRX1500 Services Gateway. To stop the fans, remove the power cord from the power supply. The fans stop in a few seconds.

After a power supply is turned on, it can take up to 60 seconds for status indicators—such as the POWER LED (on the front panel of the chassis) and the show chassis command display—to indicate that the power supply is functioning normally. Ignore error indicators that appear during the first 60 seconds.