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    Troubleshooting AccuSine PCS+ Event Log Messages

    Issue
    User wishes to know what messages in the event log mean and how they should be addressed

    Product Line
    AccuSine PCS+

    Environment
    Event Log

    Resolution
    Please see the table below for a list of events one may see in the event log and the required action(s) to address.
     
    Event Explanation Action
    AC Line Not Qualified Frequency Not Qualified Verify Line Frequency is within ±3Hz.
    Three Phase Loss Verify AC Line is present.
    Single Phase Loss Verify all three line voltages are present.
    Over Voltage Verify Line voltage is within +10%.
    Voltage Imbalance Verify voltage imbalance is less than 8%.
    Fast Under Voltage Verify voltage is within 50% of nominal (1/4 cycle)
    Fast Over Voltage Verify voltage is within +10% of nominal (1/4 cycle)
    Auto Detection Out of Range Unit was unable to Auto Detect voltage
    or frequency
    Disable Auto Detect. Manually enter nominal voltage and
    frequency of the electrical system.
    Low Order Harmonics OFF
    [AHF type only]
    5th and/or 7th order harmonic disabled Typically caused by harmonic loads without the minimum 3%
    impedance or un-isolated power factor correction capacitors on
    the load side of the main CTs
    Fan Failure Detected  Power section fan inoperable  Call your local service center.
    Filter Trip  Inverter Filter inoperable  Call your local service center.
    Gate Drive Trip  Power supply issue on Gate Driver  Call your local service center.
    HMI Communication Loss  HMI communication to Control Board loss  Verify Proper connection of HMI RJ45 Com jack.
    Call your local service center.
    IGBT Trip  IGBT issue detected  Call your local service center.
    MOV Requires Service  MOV issue detected  Call your local service center.
    Over Current Condition Detected    Call your local service center.
    Over Temperature  Over Temperature detected Verify air temperatures to the air intake of the unit are within
    specification. Verify intake and exhaust air vents are not obstructed.
    Parallel Power Wiring Mismatch  L1, L2 and L3 are not powered by the same
    phase for each parallel unit.
    Ensure L1, L2 and L3 of all parallel units are powered by the same phase.
    Protection Firmware Trip  Firmware issue detected  Call your local service center
    Power Supply Out of Range  Power Supply issue detected  Call your local service center.
    Current Sensor Inoperable  Internal Current Sensor issue detected  Call your local service center.
    Transformer Over Temperature  Transformer Over Temperature detected
    (600 and 690 volt units only)
    Verify air temperatures to the air intake of the unit are within specification.
    Verify intake and exhaust air vents are not obstructed.
    High Frequency Voltage Distortion Condition  Excessive inverter switching frequency
    detected on line voltage 
    Call your local service center.

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