F07860 External Fault 1 fault in siemens drive

F07860 External Fault 1 fault in siemens drive indicates that the a digital input assigned to "External Fault" has been triggered. 

Cause
External sensor (e.g., vibration, pressure) wired to the drive tripped. 

Remedy:
Investigate the external device connected to the digital input. Remove the cause and reset.

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