Installing, Connecting And Commissioning - Siemens SIMATIC NET S7-300 - PROFIBUS Equipment Manual

Installation, connection, commissioning, removal

4.3 Installing, connecting and commissioning

Lack of equipotential bonding
If there is no equipotential bonding in hazardous areas, there is a risk of explosion due to
equalizing current or ignition sparks.
• Ensure that equipotential bonding is available for the device.
Unprotected cable ends
There is a risk of explosion due to unprotected cable ends in hazardous areas.
• Protect unused cable ends according to IEC/EN 60079-14.
Insufficient isolation of intrinsically safe and non-intrinsically safe circuits
Risk of explosion in hazardous areas
• When connecting intrinsically safe and non-intrinsically safe circuits, ensure that the
• Observe the device approvals applicable for your country.
Unauthorized repair of devices in explosion-proof design
Risk of explosion in hazardous areas
• Repair work may only be performed by personnel authorized by Siemens.
4.3 Installing, connecting and commissioning
NOTICE
Improper mounting
Improper mounting may damage the device or impair its operation.
• Before mounting the device, always ensure that there is no visible damage to the device.
• Mount the device using suitable tools. Observe the information in the respective section
20
WARNING
WARNING
WARNING
galvanic isolation is performed properly in compliance with local regulations (e.g. IEC
60079-14).
WARNING
about mounting.
Equipment Manual, 05/2023, C79000-G8976-C160-04
CP 343-5