Okuma AL-104 alarm: Axis overtravel

The axis reaches travel limit or soft limit in Okuma control. It is an alarm from the Sobrecarrera area, and in the catalog it is listed as “Axis overtravel”. On the machine you notice it like this: The axis remains at the limit, Cannot move towards alarm direction.

On the shop floor it almost always comes from one of these causes: Offset mal puesto, Incorrect program start, Software limit reached. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Exit the limit with the Okuma procedure and reset. Resetting without fixing the cause first only hides the problem: Okuma AL-104 trips again and, in the meantime, you keep working with the machine in bad shape.

With the machine stopped and in a safe state, start with these checks: Move only in the exit direction according to the manual, Check zero part and correctors, Verify block that generated movement. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Okuma AL-104 active, avoid this: Do not release limits without knowing axis/direction, Do not continue program without correcting origin. Skipping any of these points is what turns a minor stop into an expensive breakdown.

If the limit does not release or there is mechanical damage. If you are not sure how far it goes, stop the machine and report it: a repeat alarm always works out cheaper than a crash.

It is a stop alarm: the cycle will not continue until you fix the cause. It does not always mean serious damage, but it leaves the machine where it is and you have to check it before running again. Confirm soft limit/hard limit and exact axis.