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    PowerAbsent

    Table 1: Alarm Details

    Parameter

    Description

    Code

    powerAbsent

    Description

    No Power Available: No power is available to the power entry module (PEM).

    Caution: Continued operation might cause equipment damage.

    Entities Affected

    Equipment (see respective table below).

    Possible Causes

    • AC PEM: The input AC voltage is either less than 90 Vac or greater than 255 Vac, and the output DC voltage is either less than 40 Vdc or greater than 60 Vdc.
    • DC PEM: The input and output DC voltages are either less than 40 Vdc or greater than 60 Vdc.

    Default Severity

    Critical

    Service Affecting

    Yes (true).

    Alarm Clearing

    See Clearing a PowerAbsent alarm.

    Related Fault Hierarchy

    –

    Table 2: Equipment

    Entity Name

    		 

    Fault Indicator

    Equipment

    Indicator

    Status

    pem:<chassis>/<slot>

    PEM

    See the PEM specifications in the BTI7800 Series Hardware Overview and Installation Guide.

    Clearing a PowerAbsent Alarm

    Note: Follow all applicable safety requirements as described in the BTI7800 Series Hardware Overview and Installation Guide.

    1. Check the power distribution to the chassis:
      • Ensure that each PEM is properly seated and the power connection to it is secure.
      • Ensure that each external source DC power circuit breaker is on.
      • Ensure that each the external power wires are delivering power correctly.
    2. Check for alarms on the PEM .
      • If the alarm clears, you have successfully completed this procedure.
      • If the alarm does not clear, contact your next level of support.

    Modified: 2017-10-24

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