External fault 1

What does F07860 mean?

An external monitoring device or system has triggered the "external fault 1" input signal to the drive. This indicates a critical condition detected by equipment outside of the drive's internal monitoring, requiring investigation of the connected external safety chain or process. Ignoring this fault can lead to equipment damage or unsafe operating conditions.

• Triggering of an external safety device (e.g., emergency stop button, safety light curtain, door interlock) connected to the drive's digital input (e.g., DI1).
• Overload relay trip (e.g., for motor or auxiliary equipment) connected to the drive's digital input, indicating an auxiliary fault.
• Process switch (e.g., pressure switch, level switch) exceeding its limits and triggering its contact, wired to the drive's digital input.
• Loose or faulty wiring connection to the drive's designated digital input terminal (e.g., X1-DI1), causing an intermittent or continuous trip.
• Incorrect drive parameter configuration for the external fault input (e.g., P4-01 assigned to external fault, P4-02 for NO/NC contact).

Click steps to track your progress.

1. 1

   Identify the specific external device connected to the drive's digital input configured for 'External Fault 1' (e.g., check wiring diagram, parameter P4-01).

2. 2

   Inspect the status of the identified external device (e.g., check overload relay status, emergency stop button position, limit switch actuation).

3. 3

   Measure the voltage or continuity at the drive's digital input terminal (e.g., DI1) to confirm the signal state from the external device.

4. 4

   Verify drive parameters P4-01 (Function assignment for DI1) and P4-02 (Digital input logic, NO/NC) for correct configuration.

5. 5

   Temporarily bypass the external fault device (if safe and permissible for troubleshooting) by shorting the input to its common to isolate the fault source.