Siemens SITRANS L Series Manual de instrucciones - Página 20
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Connecting
5.1
Preparing the connection
Safety instructions
Always keep in mind the following safety instructions:
•
•
Only connect or disconnect in de-energized state.
Voltage supply
The data for power supply are specified in chapter " Technical data".
Note
Power the transmitter via an energy-limited circuit (power max. 100 W) acc. to
IEC 61010-1, e.g.
•
•
Keep in mind the following additional factors that influence the operating voltage:
•
•
Connection cable
The transmitter is connected with standard four-wire cable. If electromagnetic
interference is expected which is above the test values of EN 61326-1 for industrial
areas, shielded cable should be used.
SITRANS LCS050
Operating Instructions, 02/2021,
A5E50859888
Carry out electrical connection by trained, qualified personnel authorised by the
plant operator
If overvoltage surges are expected, overvoltage arresters should be installed
WARNING
Class 2 power supply unit (acc. to UL1310)
SELV power supply unit (safety extra-low voltage) with suitable internal or
external limitation of the output current
Lower output voltage of the power supply unit under nominal load
Influence of additional transmitters in the circuit (see load values in chapter "
Technical data")
5
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