OPW M2010-EU, Installation Manual

Page: 12 / 149

1.5 I.S. Barriers - Special Conditions for Safe Use
The intrinsic safety barriers provide intrinsically safe circuits suitable for use with Category 1 equipment
located in a Group II, Gas Group IIA hazardous location. The devices are intended for use in a non-
hazardous location as associated apparatus.
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The operating temperature range for all device types is -40 °C to +70 °C.
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Maximum permissible voltage (Um) must not be above 250 V.
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The electrical parameters of the intrinsically safe connected devices must be compatible with the
electrical parameters of the barrier with which it is connected.
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The intrinsically safe barriers are intended for use only inside their respective installed enclosures.
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DO NOT use a barrier removed from a console as standalone equipment.
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Installation must be in accordance with the U.S. National Electrical Code (NFPA No. 70) and
the Code for Motor Fuel Dispensing Facilities and Repair Garages (NFPA No. 30A).
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Refer to the Installation Guide of the applicable console for the correct installation procedure.*
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The terminal strip of each barrier is clearly labeled for Power (PWR), Signal (SIG) and Ground (GND)
connections. The wiring of intrinsically safe devices to the barrier must agree with the labeling of the
terminal strip.
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Spacing requirements between the non-intrinsically safe circuit connections and the intrinsically safe
connection facilities must be maintained in accordance with EN 60079-11.
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Refer to the applicable console Field Wiring Diagrams and Installation Guides for correct wiring of all
Earth Ground and I.S. Ground terminals between the console and main electrical service panel.*
* All OPW-FMS Installation Guides and Field Wiring Diagrams can be found at
http://www.opwglobal.com/opw-fms/tech-support/manuals-how-to-videos
.
Doc. No.: M2010-EU Rev.: 13
Page 12 of 149