All alarm codes
ALARM 300
START COND. ERR. (DOOR OPEN)
The cycle start button was pressed while the front cover (front door) was opened.
- Controls
- Matrix
- Machine series
- Integrex
Causes
The cycle start button was pressed while the front cover (front door) was opened.
- INTEGREX-100~400MkIII Applications Training (H374S5B012E)manual
The cycle start button was pressed while the front cover (front door) was opened.
- INTEGREX-100~400MkIII Applications Training (H374S5B012E)manual
How to clear it
- 1
Close the front cover (PLC input XA).
- INTEGREX-100~400MkIII Applications Training (H374S5B012E)manual
Close the front cover.
- INTEGREX-100~400MkIII Applications Training (H374S5B012E)manual
Additional notes
Code 300 on Matrix Integrex is DOOR OPEN; on cncknowledge.in it is incorrectly labeled 'spindle overload'. Trust the official manual.
Confidence: high · Official Mazak Integrex training publication.
First sourced: 5/21/2026