Fanuc alarm: OT004 - MINUS OVERTRAVEL (SOFT 2)

CNC Machine Control Manufacturer
Fanuc
Control Model
10/11/12
OT004 - MINUS OVERTRAVEL (SOFT 2)
Alarm Description

1) When the tool was moving in the minus direction it entered the forbidden are of stored stroke limit 2. 2) When the tool is moving in the minus direction, it entered the forbidden area of the chuck/tail stock barrier.

Additional Suggestions & Alarm Clarification

You either overtraveled the machine or the machine does not know where it is. Power down and up and home machine. If it does not reach zero return position temporarily open up overtravel limits to allow a successful zero return. Be sure to change back parameters!

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