Connecting AC Power to a QFX3500, QFX3600, or QFX3600-I Device

 

The QFX3500, QFX3600, and QFX3600-I devices are shipped from the factory with two 650 W power supplies pre-installed. Each power supply is a hot-removable and hot-insertable field-replaceable unit (FRU) when the second power supply is installed and running. You can install replacement power supplies without powering off the device or disrupting the switching function.

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

Before you begin connecting AC power to the device:

  • 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 device chassis to earth ground.

    Caution

    Before you connect power to the device, 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 device (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. For installations that require a separate grounding conductor to the chassis, use the protective earthing terminal on the device chassis to connect to the earth ground. For instructions on connecting earth ground, see Connecting Earth Ground to a QFX3500 Device or Connecting Earth Ground to QFX3600 or QFX3600-I Devices. The device gains additional grounding when you plug the power supply in the device into a grounded AC power outlet by using the AC power cord appropriate for your geographical location (see AC Power Cord Specifications for a QFX Series Device).

  • Install the power supply in the chassis. For instructions on installing a power supply in a QFX3500 device, see Installing a Power Supply in a QFX3500 Device. For instructions on installing a power supply in a QFX3600 or QFX3600-I device, see Installing a Power Supply in a QFX3600 or QFX3600-I Device.

Note

Each power supply must be connected to a dedicated power source outlet.

To connect AC power to a QFX3500, QFX3600, or QFX3600-I device:

  1. Attach the grounding strap to your bare wrist and to a site ESD point.
  2. Ensure that the power supplies are fully inserted in the chassis and the latches are secure. If only one power supply is installed, ensure a that blank cover panel is installed over the second power supply slot.
  3. Locate the power cord or cords shipped with the device; the cords have plugs appropriate for your geographical location. See AC Power Cord Specifications for a QFX Series Device.Warning

    Ensure that the power cord does not block access to device components or drape where people can trip on it.

  4. Connect each power supply to the power sources. Insert the coupler end of the power cord into the AC power cord inlet on the AC power supply faceplate.
  5. Push the power cord retainer onto the power cord (see Figure 1 or Figure 2).
    Figure 1: Connecting an AC Power Cord to an AC Power Supply in a QFX3500 Device
    Connecting an
AC Power Cord to an AC Power Supply in a QFX3500 Device
    Figure 2: Connecting an AC Power Cord to an AC Power Supply in a QFX3600 or QFX3600-I Device
    Connecting an
AC Power Cord to an AC Power Supply in a QFX3600 or QFX3600-I Device
  6. If the AC power source outlet has a power switch, set it to the OFF (O) position.Note

    The device powers on as soon as power is provided to the power supply. There is no power switch on the device.

  7. Insert the power cord plug into an AC power source outlet.
  8. If the AC power source outlet has a power switch, set it to the ON (|) position.
  9. Verify that the AC and DC LEDs on each power supply are lit green.

    If the amber fault LED is lit, remove power from the power supply, and replace the power supply (see Removing a Power Supply from a QFX3500 Device or Removing a Power Supply from a QFX3600 or QFX3600-I Device). Do not remove the power supply until you have a replacement power supply ready: the power supplies or a blank cover panel must be installed in the device to ensure proper airflow.

    Caution

    Replace a failed power supply with a blank panel or new power supply within 1 minute of removal to prevent chassis overheating.