Safety information
2.2 General safety instructions
Automation system
22 System Manual, 01/2023, A5E03461182-AK
Installation and connection
• Only work on electrical parts if you are a qualified specialist (see section Target group and
personnel qualifications (Page 19)).
• Adhere to the protective measures for safe working on electrical parts (see section
Working on electrical parts (Page 21))
• Fuse the connecting cables according to the cable cross-section.
• Install the device in a control cabinet. The enclosures, cabinets or
electrical equipment rooms must guarantee protection against electric
shock and spread of fire.
• Ground the device in compliance with the applicable regulations.
• For the 24 V DC supply (SELV/PELV), only use power supply units that provide safe
electrical extra-low voltage in accordance with IEC 61131-2 or IEC 61010-2-201.
Maintenance
• Only work on electrical parts if you are a qualified specialist (see section Target group and
personnel qualifications (Page 19)).
• Adhere to the protective measures for safe working on electrical parts (see section
Working on electrical parts (Page 21)).
2.2.9.2 Conductive pollution
Electrocution during transmission of electrical energy via conductive contamination to the
body leads to life-threatening injuries (death).
• Install the device in a control cabinet.
• Keep the control cabinet free of conductive contamination.
2.2.9.3 Overheating
Smoke development and fire due to overheating of the device and lines lead to burns and
life-threatening injuries (death).
Overheating may be caused by the following:
• Incorrect mounting position
• Insufficient air supply (e.g. due to taped or closed ventilation slots)
• Damaged cables
Installation and connection
• Follow the instructions for the mounting position.
• Adhere to the specified ventilation clearances.
• Fuse the connecting cables according to the cable cross-section.
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