Siemens SIPROCESS GA700 Kompaktbetriebsanleitung Seite 170

Connecting
5.2 Electrical connections
Improper power supply
Danger of explosion in hazardous areas as result of incorrect power supply, for example,
using direct current instead of alternating current.
• Connect the device in accordance with the specified power supply and signal circuits.
Unsuitable lines and/or cable glands
Danger of explosion in hazardous areas
• Only use lines and cable glands that are appropriate for the application.
• Tighten the cable glands s in accordance with the torques specified in the
• When replacing cable glands, only use cable glands of the same type.
• After installation check that the lines are seated firmly.
Unsuitable device for non power-limited circuits
• Connect only non-sparking devices to non power-limited circuits in Zone 2 or 22. Ensure
Lack of equipotential bonding
Explosion hazard
Danger of explosion through compensating currents or ignition currents through lack of
equipotential bonding.
• Make sure that equipotential bonding exists for the device.
Exception: It is permissible to omit connection of the equipotential bonding for devices with
type of protection "Intrinsic safety Ex i".
48
WARNING
The relevant specifications can be found in the certificates, in Chapter "Technical
specifications (Page 93)" or on the nameplate.
WARNING
section "Electrical connections (Page 47)".
WARNING
that these are suitable for operation in hazardous areas of Zone 2 or 22 and for the
conditions present at the location of use.
WARNING
Devices in explosion-proof design
Compact Operating Instructions, 11/2019, A5E35134047-04