Siemens SITRANS TSinsert 7MC71 Serie Kompaktbetriebsanleitung Seite 18

4.4 Disassembly
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 instructions
WARNING
Incorrect selection of type of protection
Danger of explosion in areas subject to explosion hazard.
This device is approved for several types of protection.
1. Decide in favor of one type of protection.
2. Connect the device in accordance with the selected type of protection.
3. In order to avoid incorrect use at a later point, make the types of protection that are not used permanently
unrecognizable on the nameplate.
WARNING
Improper power supply
Danger of explosion in hazardous areas as result of incorrect power supply, e.g. using direct current instead of alternating
current.
Connect the device in accordance with the specified power supply and signal circuits. The relevant specifications can
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be found in the certificates, in Electrical data (Page 28) or on the nameplate.
WARNING
Unsafe extra-low voltage
Danger of explosion in hazardous areas due to voltage flashover.
Connect the device to an extra-low voltage with safe isolation (SELV).
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WARNING
Lack of equipotential bonding
Danger of explosion through compensating currents or ignition currents through lack of equipotential bonding.
Ensure that the device is potentially equalized.
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Exception: It may be permissible to omit connection of the equipotential bonding for devices with type of protection
"Intrinsic safety Ex i".
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SITRANS TSinsert/TS100/TS200/TS300/TS500 (7MC71.. 7MC72.. 7MC80.. 7MC75.. 7MC65.. 7MC55..)
A5E03920348-AC, 06/2016