Use In Potentially Explosive Atmospheres; Approvals; Grounding; Interconnection - ABB TTF300 Inbetriebnahmeanleitung

Use in potentially explosive atmospheres

2 Use in potentially explosive atmospheres
Special regulations must be observed in potentially explosive atmospheres as regards the
power supply, signal input / output and ground connections. The information relating specifically
to explosion protection that appears within the individual chapters must be observed.
Notice - Potential damage to parts!
All parts must be installed in accordance with the manufacturer's specifications, as well as
relevant standards and regulations.
Commissioning and operation must comply with IEC 60079-14 (Electrical apparatus for
explosive gas atmospheres).
2.1

Approvals

Codes relating to the approvals for use in potentially explosive atmospheres can be found in the
chapter titled "Ex relevant specifications" in this manual.
2.2

Grounding

If, for functional reasons, the intrinsically safe circuit needs to be grounded by means of a
connection to the equipotential bonding, it may only be grounded at one point.
2.3

Interconnection

If transmitters are operated in an intrinsically safe circuit, proof that the interconnection is
intrinsically safe must be provided in accordance with DIN VDE 0165/Part 1 (EN 60079-25/2004
and IEC 60079-25/2003). An interconnection certificate must always be provided for intrinsically
safe circuits.
2.4

Configuration

The transmitter can be configured in the potentially explosive atmosphere in compliance with
the interconnection certificate, either within the potentially explosive atmosphere itself using
approved handheld terminals or by coupling an Ex modem into the circuit outside the potentially
explosive atmosphere.
2.5

Ex relevant specifications

See Chapter 5, "Ex relevant specifications" page 31.
10 - EN TTF300 CI/TTF300-X1