Heidenhain 130 alarm: Encoder/ruler signal error

The control detects an invalid or unstable reading from the measurement system. It is an alarm from the Encoder / measurement area, and in the catalog it is listed as “Encoder/ruler signal error”. On the machine you notice it like this: The axis does not home, Position reading skips or fails, Alarm after movement or vibration.

On the shop floor it almost always comes from one of these causes: Scale cable or connector, Dirty/damaged ruler, Cabezal lector defectuoso, Electrical interference. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset only after a stop; if it returns, do not operate that axis. Resetting without fixing the cause first only hides the problem: Heidenhain 130 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: Anotar eje exacto, Visually inspect accessible wiring without energising the cabinet, Check whether it appears after moving one particular axis. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Heidenhain 130 active, avoid this: Do not dismantle rule without tools/procedure, Do not continue machining with a doubtful position. Skipping any of these points is what turns a minor stop into an expensive breakdown.

Always if it affects axis measurement or reappears after restart. 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. See diagnosis of the encoder/ruler in Heidenhain and machine manual.