HP MicroLogix 1761-NET-ENI manual Safety Considerations

2-2Installation and Wiring

Safety Considerations

Tests. For specific information required by EN 61131-2, see the appropriate sections in this publication, as well as the Allen-Bradley publication Industrial Automation Wiring and Grounding Guidelines For Noise Immunity, publication 1770-4.1.

Open style devices must be provided with environmental and safety protection by proper mounting in enclosures designed for specific application conditions. See NEMA Standards publication 250 and IEC publication 529, as applicable, for explanations of the degrees of protection provided by different types of enclosure.

This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D, or non-hazardous locations only. The following WARNING statement applies to use in hazardous locations.

WARNING

!

Explosion Hazard

•Substitution of components may impair suitability for Class I, Division 2.

•Do not replace components or disconnect equipment unless power has been switched off and the area is known to be non-hazardous.

•Do not connect or disconnect connectors or operate switches while circuit is live unless the area is known to be non-hazardous.

•This product must be installed in an enclosure. All cables connected to the product must remain in the enclosure or be protected by conduit or other means.

•The ENI must be operated from an external power source.

•All wiring must comply with N.E.C. article 501-4(b).

Use only the following communication cables and replacement connectors in Class I Division 2 Hazardous Locations.

Environment Classification	Communication Cable and Connectors
Class I, Division 2 Hazardous	1761-CBL-PM02 Series C	2707-NC8 Series B
Environment
	1761-CBL-HM02 Series C	2707-NC9 Series B
	1761-CBL-AM00 Series C	2707-NC10 Series B
	1761-CBL-AP00 Series C	2707-NC11 Series B

Publication 1761-UM006A-EN-P - February 2001