Okuma B2170/B2174 alarm: MCS: magnetic encoder or servo link

Okuma OSP detects magnetic encoder or MCS servo link communication failure. It is an alarm from the Encoder / measurement area, and in the catalog it is listed as “MCS: magnetic encoder or servo link”. On the machine you notice it like this: The axis does not enable, Reference loss, Alarm when starting or moving.

On the shop floor it almost always comes from one of these causes: Magnetic encoder, Cable MCS/servo link, Drive without communication, Conector flojo. Rule out the most likely one on your machine first, before touching parameters or swapping anything.

Reset tras reparar enlace/encoder. Resetting without fixing the cause first only hides the problem: Okuma B2170/B2174 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: Write down exact code B, Revisar LEDs de drive, Do not move automatic. That alone will tell you whether it is the program or whether you need to raise a maintenance job.

With Okuma B2170/B2174 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.

Siempre. 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.