Stahl 9411/24 Series, Руководство по эксплуатации

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207321 / 941160310190
2018-04-16·BA00·III·en·04
Function and Device Design
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Zone 2 Ex i Field Device Coupler 8 Spurs
Series 9411/24
4.1 Function
Application range
The field device coupler is used for connecting up to eight intrinsically safe field devices
to a non-intrinsically safe trunk.
For this, the trunk and spurs are galvanically isolated.
If the coupler is used in a hazardous area, it must be installed in an enclosure approved
for this area.
Intended use
The devices can be used as intended:
• For all fieldbuses with an IEC 61158-2 physical layer, e.g. Foundation Fieldbus H1 and
Profibus PA.
• For non-intrinsically safe trunks, Ex nA connections.
• For intrinsically safe spurs (Ex i and FISCO) to connect intrinsically safe field devices.
Use of field device couplers, trunks and spurs
03673E00
Zone 2 Ex i
field device
coupler
Zone 0 Zone 1 Zone 2 Zone 21 Zone 22 Non-
hazardous
area
Without field
enclosure
9411/24-
310-41,
9411/24-
320-41,
9411/24-
330-41
Not
permissible
Not
permissible
IEC/
EN 60079-15
-compliant
enclosure
required
Enclosure as
per IEC/
EN 60079-31
or IEC/
EN 61241-1
required
Enclosure as
per IEC/
EN 60079-31
or IEC/
EN 61241-1
required
OK
Trunk Not
permissible
Not
permissible
Ex nA OK OK OK
Spurs Ex ia Ex ia Ex nL OK OK OK
Host
Trunk Ex nA
Spurs Ex i
Spur
Fieldbus
power-
supply
Power
Field
devices
e.g. Ex i,
FISCO
Terminating resistor
Field device coupler Field device coupler
Zone 2, 22