Haas 135-138/189 alarm: Axis motor overtemperature

Haas detects overheating in the X/Y/Z/A/B axis motor depending on the number. It is an alarm from the Servo / ejes area, and in the catalog it is listed as “Axis motor overtemperature”. On the machine you notice it like this: Alarm after long movements or loading, Eje caliente, It can be accompanied by overload.

On the shop floor it almost always comes from one of these causes: Mechanical overload, Dry guides, Motor/drive deteriorado, Cycle with excessive accelerations. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset after cooling down and removing the cause. Resetting without fixing the cause first only hides the problem: Haas 135-138/189 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: Let it cool down, Check lubrication, Check if it occurs in vacuum. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Haas 135-138/189 active, avoid this: Do not bypass safety devices, Do not manipulate energized electrical cabinet, Do not continue producing if the alarm reappears. Skipping any of these points is what turns a minor stop into an expensive breakdown.

If it repeats after cooling down or with no load. 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. Guidance reference. Always confirm the full text in the exact machine/control manual.