Connecting
5
5.1 Basic safety instructions
WARNING
Unsuitable cables, cable glands and/or plugs
Risk of explosion in hazardous areas.
• Use only cable glands/plugs that comply with the requirements for the relevant type of
protection.
• Tighten the cable glands in accordance with the torques specied in Technical data
(Page 61).
• Close unused cable inlets for the electrical connections.
• When replacing cable glands, only use cable glands of the same type.
• After installation, check that the cables are seated rmly.
WARNING
Improper power supply
Risk of explosion in hazardous areas as result of incorrect power supply.
• Connect the device in accordance with the specied power supply and signal circuits. The
relevant specications can be found in the certicates, in Technical data (Page 61) or on
the nameplate.
WARNING
Incorrect conduit system
Risk of explosion in hazardous areas as result of open cable inlet or incorrect conduit system.
• In the case of a conduit system, mount a spark barrier at a dened distance from the device
input. Observe national regulations and the requirements stated in the relevant approvals.
WARNING
Unprotected cable ends
Risk of explosion through unprotected cable ends in hazardous areas.
• Protect unused cable ends in accordance with IEC/EN 60079-14.
SITRANS P320/P420
Compact Operating Instructions, 01/2021, A5E38874562-AC 35