Siemens SIMATIC PN/BACnet LINK, Руководство по эксплуатации

Страница: 10 / 96

Safety instructions
2.1 Safety instructions
PN/BACnet LINK
10
Operating Instructions, 10/2017, A5E39895543-AA
Safety information
WARNING
Connection only over safety extra-low voltage / protective extra-low voltage
May cause death or serious injury
The device is designed for operation using directly connectable safety extra-low voltage
(SELV) with safe electrical separation according to IEC 60950-1 / EN 60950-1 /
VDE 0805-1 or IEC 61131-2 / EN 61131-2 / DIN EN 61131-2.
To maintain the safety property of the low voltage circuits of the PN/BACnet LINK, the 24 V
rated power supply as well as external connections to communication ports must be
supplied from reliable sources that meet the requirements for SELV / PELV limited voltage
sources according to different standards.
Therefore only connect safety extra-low voltages (SELV) with safe electrical separation
according to IEC 60950-1 / EN 60950-1 / VDE 0805-1 to the supply voltage connections
and the communications interfaces.
Working on the device or on connected components
WARNING
Risk of electric shock
May cause death or serious injury
•
Voltages > 60 V DC or 30 V AC may be present in the control cabinet. Therefore
appropriate safety precautions must be taken to prevent contact during commissioning
and maintenance work.
• Before carrying out any work on the device or on connected components, make sure
that the installation is in a zero-voltage state.
•
Use cable types with UL approval for UL-approved systems.