Okuma Alarm A-1111 – Shutting Down to Avoid Damage

Alarm A-1111 indicates that the control system initiated an automatic shutdown to prevent potential mechanical or component damage.

The system detected abnormal sensor data or operating conditions that could lead to tool, spindle, or machine damage. As a protective measure, operation was stopped immediately.

Possible causes include:

• Abnormal load or torque detection

• Sensor malfunction or incorrect signal

• Collision detection trigger

• Overtravel or positioning error

• Faulty feedback from safety system

The shutdown is a protective function designed to avoid severe hardware damage.

Recommended actions:

1. Inspect the machine for mechanical obstruction or collision.

2. Check related sensors and feedback signals.

3. Verify spindle and axis load values.

4. Review recent program execution steps.

5. Clear the alarm and restart only after confirming safe conditions.

Do not force restart without diagnosing the cause, as further damage may occur.