Level limit switch
Series RF 3000
Technical Information / Instruction manual
page
Electrical installation
Connection
Connecting
terminals
Protective
conductor terminal
Connecting
terminals
Protective
conductor terminal
Connecting
terminals
Protective
conductor terminal
Standard housing
d-housing
de-housing
Universal voltage
Relay DPDT
Power supply:
21 .. 230 V 50/ 60 Hz or DC ±10%
1.5 VA or 1.5 W
Fuse on power supply:
max. 10 A, 250 V, HBC, fast or slow
Signal output:
Floating relay DPDT
AC max. 250 V, 8 A, non inductive
DC max. 30 V, 5 A, non inductive
Fuse on signal output:
max. 10 A, 250 V, HBC, fast or slow
Power supply
Signal output
Conduit system
(Dust and Gas
Hazardous Locations)
General requirements:
In addition the regulations of the country must be observed. The used flameproof seals and blanking elements
must have an adequate type approval and a temperature range of at least –40°C (-40°F) to +80°C (176°F). In
addition they shall be suitable for the conditions and correctly installed. Where available the provided original
parts of the manufacturer must be used.
Installation of a flameproof/ explosion proof enclosure with a conduit system:
In a conduit system single electric conductors are installed in a certified pipe system. This pipe system is in
a flameproof/ explosion proof construction as well. The flameproof/ explosion proof enclosure and the pipe
system needs to be sealed from each other by a certified flameproof seal of a type "d” or explosion proof of
a type "XP”.This seals shall be installed directly in or at the conduit entries of the flameproof/ explosion proof
enclosure. Not used entries have to be closed with blanking elements certified for this purpose (flameproof
type "d” or explosion proof type "XP”).
Additional requirements for FM:
Conduit entries of a flameproof enclosure "d” shall have installed the flameproof seal within 18 inches from the
enclosure wall. Not used entries have to be closed with adequate blanking elements of a certified flameproof
type AEx Cl.1 Div.1 A.
Opening the lid
Units with Dust Explosion approval:
Before opening the lid take care, that no dust deposits or whirlings and no hazardous atmosphere is present.
Units with flameproof GasExplosion approval (d-housing):
To prevent ignition of hazardous atmospheres, do not remove the lid (cover) while circuits are alive.
RFnivo
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RF 3000 f
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