Siemens 300xxx/34000 alarm: Sinumerik servo/axis fault

Family of drive or axis alarms in Sinumerik/Sinamics. It is an alarm from the Servo / ejes area, and in the catalog it is listed as “Sinumerik servo/axis fault”. On the machine you notice it like this: One axis does not enable, Alarm on drive or axis during movement, May require a drive reset.

On the shop floor it almost always comes from one of these causes: Power module, Cable de motor/encoder, Mechanical overload, Drive not ready. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset according to OEM sequence after resolving drive condition. Resetting without fixing the cause first only hides the problem: Siemens 300xxx/34000 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 complete number, Check drive diagnosis, Check interlocks and the emergency stop. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Siemens 300xxx/34000 active, avoid this: Do not delete alarms without writing down the complete number, Do not modify drive parameters without backup. Skipping any of these points is what turns a minor stop into an expensive breakdown.

Whenever it is repeated or involves power/drive module. 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. The complete number and channel/axis are essential for Sinumerik diagnosis.