Connection; Basic Safety Instructions - Siemens SIPART PS2 Operating Instructions Manual

Connection

5.1

Basic safety instructions

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.
With intrinsically device version (Ex i)
Risk of explosion in hazardous areas.
For intrinsically safe device versions only the certified circuits may be connected as
auxiliary power supply, control and signal circuits.
• Make sure that the power source of the used circuits is marked as intrinsically safe.
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).
Connecting device in energized state
Danger of explosion in hazardous areas.
• Connect devices in hazardous areas only in a de-energized state.
Exceptions:
• Circuits of limited energy may also be connected in the energized state in hazardous
• Exceptions for type of protection "Non-sparking nA" (Zone 2) are regulated in the
SIPART PS2 with and without HART
Operating Instructions, 02/2016, A5E00074631-AB
WARNING
The relevant specifications can be found in the certificates, in Chapter "Technical data
(Page 243)" or on the nameplate.
WARNING
WARNING
WARNING
areas.
relevant certificate
5
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