Siemens SITRANS LR250 Kompaktbetriebsanleitung Seite 19

WARNING
Incorrect disassembly
The following dangers may result through incorrect disassembly:
- Injury through electric shock
- Danger through emerging media when connected to the process
- Danger of explosion in hazardous area
In order to disassemble correctly, observe the following:
Before starting work, make sure that you have switched off all physical variables such as pressure, temperature,
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electricity etc. or that they have a harmless value.
If the device contains dangerous media, it must be emptied prior to disassembly. Make sure that no environmentally
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hazardous media are released.
Secure the remaining connections so that no damage can result if the process is started unintentionally.
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5 Connecting
5.1 Basic safety information
NOTICE
Condensation in the device
Damage to device through formation of condensation if the temperature difference between transportation or storage and
the mounting location exceeds 20 °C (68°F).
Before taking the device into operation let the device adapt for several hours in the new environment.
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WARNING
Missing PE/ground connection
Danger of electric shock.
Depending on the device version, connect the power supply as follows:
Power plug: Ensure that the used socket has a PE/ground conductor connection. Check that the PE/ground conductor
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connection of the socket and power plug match each other.
Connecting terminals: Connect the terminals according to the terminal connection diagram. First connect the PE/ground
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conductor.
5.2 Connecting SITRANS LR250
WARNING
Incorrect connection to power source
Danger to personnel, system and environment can result from improper power connection.
The DC input terminals shall be supplied from a source providing electrical isolation between the input and output, in
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order to meet the applicable safety requirements of IEC 61010-1.
All field wiring must have insulation suitable for rated voltages.
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SITRANS LR250 (FOUNDATION FIELDBUS)
A5E33472700-AA, 08/2014
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