Level limit switch
Series RF 8000
Technical Information / Instruction manual
page
Electrical installation
WARNING
:
• Observe the specifications of the examination certificate valid in your country.
• Observe the laws and regulations valid in your country for electrical installations in potentially explosive
atmospheres.
• Refer to Hazardous Area Installation on page 31 if applicable.
• Ensure that the available power supply complies with the power supply specified on the product nameplate
and specified in the examination certificate valid in your country.
• Shipping plugs in the cable inlets must be replaced by suitable screwtype glands or dummy plugs, which are
appropriately certified for transmitters with explosion-proof protection.
• For CE installations, use a cable with a braided metallic shield (or armoured cable where applicable).
• The lid must not be opened in wet locations while the unit is powered. (A wet location is a location where
water or another conductive fluid may be present and is likely to increase the risk of electric shock.)
Notes
:
• Lay PROFIBUS PA cable separately from power cable with voltages greater than 60 V.
• Avoid locating the unit near large electrical equipment wherever possible.
• Connect the cable shield to earth (for example, to the housing by means of a metallic screwed gland).
WARNING
:
• All field wiring must have insulation suitable for at least 250 V.
• Only qualified personnel are authorized to install and operate this equipment in accordance with established
safety practices and standards.
• The Protective Earth Terminal indicated by
must be connected to reliable ground. In case of
non-metallic vessels, the external earth wire should be connected to an earthed component which is
earthed near the vessel.
• All wiring must be done by qualified personnel in accordance with all governing regulations.
• The equipment must be protected by a 15A fuse or circuit breaker in the building installation.
• A circuit breaker or switch in the building installation, marked as a disconnect switch, shall be in close
proximity to the equipment and within easy reach of the operator.
• Use shielded cable, wire gauge 20 AWG to 14 AWG (0.5 mm
2
to 2.0 mm
2
). For CE installations use a cable
with a braided metallic shield (or armoured cable where applicable).
• Maximum working voltage between adjacent relay contacts is 250 V.
• Relay contact terminals are for use with equipment which has no accessible live parts and wiring which has
insulation suitable for at least 250 V.
Additional Safety Instructions for Hazardous Locations
see page 31ff
General Safety Instructions
Electronic module: Standard (
Relay SPDT / Solid State)
Electronic module: Digital
(Profibus PA / Solid State)
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gi150917
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RFnivo
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