
Connecting
5
5.1
Preparing the connection
Safety instructions
Always keep in mind the following safety instructions:
• Carry out electrical connection by trained, qualified personnel authorised by the
plant operator
WARNING
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.
• 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
Keep in mind the following additional factors that influence the operating voltage:
• Lower output voltage of the power supply unit under nominal load (e.g. with a
transmitter current of 20.5 mA or 22 mA in case of fault)
• Influence of additional transmitters in the circuit (see load values in chapter
"
Technical data
"
)
Connection cable
Use cable with round cross section for transmitters with housing and cable gland. To
ensure the seal effect of the cable gland (IP protection rating), find out which cable
outer diameter the cable gland is suitable for.
Shielded, two-wire cable is recommended for connecting the device.
Note
SITRANS LR150
Operating Instructions, 08/2020,
A5E50352155
19
Содержание SITRANS L Series
Страница 7: ...Table of Contents vi SITRANS LR150 Operating Instructions 08 2020 A5E50352155 ...
Страница 9: ...Preface viii SITRANS LR150 Operating Instructions 08 2020 A5E50352155 ...
Страница 15: ...Safety notes 2 7 Security information 6 SITRANS LR150 Operating Instructions 08 2020 A5E50352155 ...
Страница 21: ...Description 3 4 Packaging transport and storage 12 SITRANS LR150 Operating Instructions 08 2020 A5E50352155 ...
Страница 73: ...Setup with smart device Bluetooth 8 1 Connecting 64 SITRANS LR150 Operating Instructions 08 2020 A5E50352155 ...
Страница 97: ...Service and maintenance 13 2 Disposal 88 SITRANS LR150 Operating Instructions 08 2020 A5E50352155 ...
Страница 99: ...Certificates and approvals 14 2 EU conformity 90 SITRANS LR150 Operating Instructions 08 2020 A5E50352155 ...