Okuma AL-001 / 2111 alarm: Axis servo alarm

The OSP detects axis/servo failure or abnormal drive condition. It is an alarm from the Servo / ejes area, and in the catalog it is listed as “Axis servo alarm”. On the machine you notice it like this: The axis does not enable, Alarm during movement, May require a re-zero.

On the shop floor it almost always comes from one of these causes: Drive servo, Encoder/cable, Mechanical overload, Loss of zero. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset/re-zero according to Okuma procedure after resolving condition. Resetting without fixing the cause first only hides the problem: Okuma AL-001 / 2111 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: Identify axis and subcode, Revisar carga/atasco, Check whether it allows homing/re-zero. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Okuma AL-001 / 2111 active, avoid this: Do not force the axis, Do not change OSP parameters without backup. Skipping any of these points is what turns a minor stop into an expensive breakdown.

If it reappears or there is an associated drive alarm. 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 critical: there is a real risk of damage to the machine, the tool or a person. Leave the machine stopped, do not keep resetting it to see if it goes away, and call maintenance before producing again. Okuma OSP displays OEM codes and messages; use full number.