Siemens SITRANS FMS500 - Electrical connection

5.3 Electrical connection
WARNING
Safety requirement for DC power supply input
The DC power supply version is intended to be supplied from one of the following:
• Isolated limited energy source UL61010-1, 3rd ed cl. 9.4
• Limited power source per UL62368-1
• PS2 per UL62368-1
• Class 2 per NEC
WARNING
Safety requirement for power supply for communication terminals
When applicable, the communication terminals are intended to be supplied from one of the
following:
• Isolated limited energy source UL61010-1, 3rd ed cl. 9.4
• Limited power source per UL62368-1
• PS2 per UL62368-1
• Class 2 per NEC
WARNING
Safety requirement for power supply for communication terminals
The device is intended to be supplied from an isolated Limited Energy Source per UL61010-1,
3rd ed cl. 9.4 or Limited Power Source per UL62368-1 or Class 2 per NEC.
WARNING
Disconnecting the device from power
To be able to disconnect the device from the electrical supply source, install an external switch
or a circuit breaker upstream to the device.
Choose a position so that it is easy to operate the disconnecting protection device.
WARNING
Grounding
Connect mains protective ground earth to PE terminal in accordance with diagram (due to class
1 power supply).
WARNING
High vibration environment
Use relay output only in NO mode in an environment with high vibration.
Connecting
5.3Electrical connection
SITRANS FMS500
32 Operating Instructions, 01/2024, A5E52677520-AA