Melsec IQ-F Application Manual.pdf

The manual classifies safety precautions into two categories: [WARNING] and [CAUTION].
[WARNING] indicates that incorrect handling may cause hazardous conditions, resulting in death or severe injury.
[CAUTION] indicates that incorrect handling may cause hazardous conditions, resulting in minor or moderate injury or property damage.

[DESIGN PRECAUTIONS]
- Set up safety circuits outside the PLC, including emergency stop, protection, and interlock circuits.
- Design external circuits and mechanisms to ensure safe machine operation in case of errors or failures.
- Configure an external safety circuit, such as a fuse, to prevent smoke and fire in output circuits.

[INSTALLATION PRECAUTIONS]
- Connect expansion boards, adapters, and cables securely to prevent malfunctions.
- Turn off power to the PLC before attaching or detaching devices.
- Keep power, control, and communication cables away from main circuits and high-voltage lines.

[STARTUP AND MAINTENANCE PRECAUTIONS]
- Do not touch terminals while the PLC's power is on.
- Read the manual carefully before modifying programs or forcing output.
- Do not change programs from multiple devices at the same time.
- Handle batteries correctly and follow proper usage guidelines.