Switching On The Supply Voltage - Siemens SITRANS Series Operating Instructions Manual

Commissioning

8.2 Switching on the supply voltage

Opening device in energized state
Risk of explosion in hazardous areas
● Only open the device in a de-energized state.
● Check prior to commissioning that the cover, cover locks, and cable inlets are assembled
Exception: Devices having the type of protection "Intrinsic safety Ex i" may also be opened
in energized state in hazardous areas.
Hazardous contact voltage
Risk of injury through hazardous contact voltage when the device is open or not completely
closed.
The degree of protection specified on the nameplate or in Technical data (Page 191) is no
longer guaranteed if the device is open or not properly closed.
● Make sure that the device is securely closed.
Note
Hot surfaces
Hot process medium and high ambient temperatures lead to hot surfaces which can cause
burns.
● Take corresponding protective measures, for example wear protective gloves.
8.2 Switching on the supply voltage
Requirement
● You have connected the device correctly.
● The terminal voltage on the device is correct. (Page 229)
84
WARNING
in accordance with the directives.
WARNING
SITRANS P320/P420 (mA/HART)
Operating Instructions, 06/2018, A5E44852162-AA