Place a mechanical jack, a 4x4 wooden post, or an industrial spring lift under the spindle head. Then release the Z-axis brake manually (refer to your machine manual) to settle the head on the support. Do not rely on the brake alone.
Use a multimeter to check for continuity and shorts to ground across all cable pins. Step 4: Check Motor Insulation (Megger Test) fanuc 414 servo alarm z axis detect error
: Abnormal current (often points to the amplifier or a short circuit). OVC (Bit 5) : Overcurrent. LV (Bit 6) : Low voltage (power supply issue). FBA (Bit 1) : Disconnection alarm (feedback cable or pulse coder). Amplifier Display Place a mechanical jack, a 4x4 wooden post,
: The focus of this guide, indicating a failure in the vertical movement loop. Use a multimeter to check for continuity and
To narrow down the cause, check the following diagnostic and physical indicators:
