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Connect SSR120 to Power

Connect Earth Ground to SSR120

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.

Note:

Before you connect an earth ground to the protective earthing terminal of an SSR120 appliance, ensure that a licensed electrician has attached an appropriate ground ring terminal to the grounding cable. Using a grounding cable with an incorrectly attached ring terminal can damage the appliance.

You ground the SSR120 by connecting a grounding cable to earth ground and then attaching the grounding cable to the chassis grounding point located on the rear of the appliance. Under all circumstances, use this grounding connection to ground the chassis. For AC-powered systems, you must also use the grounding wire in the AC power cord along with the one-hole grounding ring terminal connection. This tested system meets or exceeds all applicable EMC regulatory requirements with the one-hole protective grounding terminal.

To ground the appliance:

  1. Wrap and fasten one end of the ESD grounding strap around your wrist and connect the other end to a site ESD point. 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, such as the rack in which the appliance is mounted. The grounding cable must be 14 AWG (1.5 mm²) stranded wire.
  4. Using a Phillips screwdriver remove the M4 screw from the grounding point on the rear of the chassis.
  5. Place the grounding cable ring terminal attached to the grounding cable over the grounding point.
  6. Secure the grounding cable ring terminal to the grounding point with the M4 screw.
    Figure 1: Connecting the Grounding Cable to the SSR120Connecting the Grounding Cable to the SSR120
  7. Dress the grounding cable and verify that it does not touch or block access to the appliance components and that it does not drape where people could trip on it.

Note:

The appliance should be permanently connected to ground during operation.

Connect Power to SSR120

Ensure that you have a power cord appropriate for your geographical location.

To connect power to the appliance:

  1. Locate the power cord shipped with the appliance.
    Warning:

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

  2. Plug the power cord barrel connector into the MAIN POWER INPUT on the appliance and tighten the lock ring. See Figure 2.
    Note:

    Do not use the REDUNDANT POWER INPUT.

    Figure 2: Connecting the SSR120 to the Power SupplyConnecting the SSR120 to the Power Supply
  3. If the AC power source outlet has a power switch, set it to the OFF (0) position.
  4. Insert the power cord plug into an AC power source outlet.
  5. If the AC power source outlet has a power switch, set it to the ON (|) position.

Power Off the SSR120

You can power off the SSR120 in one of the following ways:

  • Graceful shutdown—You can do a graceful shutdown in two ways:

    • Use the Linux poweroff command at the Console. The appliance begins gracefully shutting down the operating system and then powers itself off.

    • Press and hold the POWER button for 3 seconds, then release. The appliance begins gracefully shutting down the operating system and then powers itself off.

    CAUTION:

    Use the graceful shutdown method to power off or reboot the appliance.

  • Forced shutdown—Press and hold the POWER button for 7 seconds, then release. The appliance immediately powers itself off without shutting down the operating system.

    CAUTION:

    Forced shutdown can result in data loss and corruption of the file system.

    Use the forced shutdown method as a last resort to recover appliance if the appliance operating system is not responding to the graceful shutdown method.

Warning:

Do not press the POWER button while the appliance is shutting down.

To remove power completely from the appliance, unplug the power cord or switch off the power source.

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