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    How to troubleshoot an ILF fault on an Altivar Process Drive?

    How to troubleshoot an ILF [Internal Link Error] fault on an Altivar Process Drive?

    Product Line:
    Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)

    All serial numbers for Altivar Process Drive



    Communication interruption between option module and the drive.

    • Verify connection to the proper slot
      • Slot A
        • Communication Modules (DeviceNet, Ethernet IP, Profibus, ProfiNet...)
        • I/O & Relay Module
      • Slot B
        • Encoder Card (Analog, Digital, Resolver...)
        • I/O & Relay Module
    • Verify the environment (electromagnetic compatibility)
    • If using Communication Module, check drives firmware version. (For most cases it should be at least V1.5IExx)
    • Save configuration file on keypad, remove option module and do a factory reset. If fault disappears the possible bad option module. 
    • Replace the option module.

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