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Internal Fault LED

    Last Modified: May 15, 2018

    The Internal Fault LED is red and indicates the module is in Fail-safe Mode. This includes Fail-safe Mode triggered by automatic self-diagnostic faults or user-configurable diagnostic faults.

    Table 1. Internal Fault LED Flash Behavior
    LED Color LED Pattern Indication
    Red Flashes once then pauses A user-configured fault has triggered Fail-safe Mode.
    Flashes twice then pauses A temperature fault has been detected.
    Flashes three times then pauses A power fault has been detected.
    Flashes more than three times then pauses An internal fault has been detected. Record the number of flashes and contact National Instruments.
    Off No Internal Fault has been detected.

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