2350 i²*t overload fault in lenze i550 drive

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Fault Code 2350 in a Lenze i550 drive indicates an i²t overload fault. This means the drive has detected a significant overload that has exceeded the specified i²t limit. i²t is a measure of the heat generated in a conductor due to excessive current flow over time.

Potential Causes

  1. Overloaded Motor:
    • The motor connected to the drive is being asked to do more work than it's designed for.
    • Solution: Reduce the load on the motor or ensure it's rated for the required power.
  2. Mechanical Issues:
    • Jamming: The motor or its connected machinery might be jammed, causing excessive current draw.
    • Friction: Increased friction due to misalignment or worn components can lead to higher currents.
    • Solution: Check for mechanical obstructions, ensure proper alignment, and replace worn parts if necessary.
  3. Electrical Problems:
    • Short Circuit: A short circuit within the motor, drive, or connected wiring can cause excessive current.
    • Incorrect Wiring: Improper connections can lead to overloading.
    • Solution: Inspect for short circuits, verify wiring diagrams, and correct any issues.
  4. Drive Configuration Issues:
    • Incorrectly configured drive parameters, such as excessive current limits or improper motor data, can trigger the fault.
    • Solution: Review and adjust drive parameters to match the motor and application requirements.
  5. External Power Supply Issues:
    • Voltage fluctuations or insufficient power supply can cause the drive to draw excessive current.
    • Solution: Ensure a stable and adequate power supply for the drive.

Troubleshooting Steps

  1. Check Motor and Load:
    • Verify that the motor and load are compatible and not overloaded.
    • Inspect for mechanical issues like jamming or binding.
  2. Inspect Electrical Connections:
    • Ensure all connections are tight and secure.
    • Look for signs of damage, corrosion, or short circuits.
  3. Check Drive Parameters:
    • Verify that the drive parameters, such as current limits and motor data, are correctly set.
    • Consult the drive manual for specific guidelines.
  4. Monitor Power Supply:
    • Ensure the power supply is stable and capable of delivering the required current.
    • Use a multimeter to measure voltage and current.

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