Rockwell-automation 1440-TB-H XM-947 Dynamic Vibration Terminal Base Uživatelský manuál stáhnout pdf (Strana 8)

8 XM-947 Dynamic Vibration Terminal Base

Publication GMSI10-IN027A-EN-P - May 2010

• 14 to 22 AWG copper conductors without pretreatment; 8 AWG

required for grounding the DIN rail for electromagnetic interference

(emi) purposes

• Recommended strip length 8 millimeters (0.31 inches)

• Minimum insulation rating of 300V

• Soldering the conductor is forbidden

• Wire ferrules can be used with stranded conductors; copper ferrules

recommended

Grounding Requirements

Use these grounding requirements to ensure safe electrical operating

circumstances, and to help avoid potential emi and ground noise that can

cause unfavorable operating conditions for your XM system.

DIN Rail Grounding

The XM modules make a chassis ground connection through the DIN rail.

The DIN rail must be connected to a ground bus or grounding electrode

conductor using 8 AWG or 1 inch copper braid. See illustration on the

following page.

Use zinc-plated, yellow-chromated steel DIN rail (Allen-Bradley part no.

199-DR1 or 199-DR4) or equivalent to assure proper grounding. Using other

DIN rail materials (e.g. aluminum, plastic, etc.), which can corrode, oxidize, or

are poor conductors can result in improper or intermittent platform

grounding.

ATTENTION

See the XM Documentation and Configuration Utility CD for Hazardous

Locations installation drawings. The XM Documentation and Configuration

Utility CD is packaged with the XM modules.

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Rockwell-automation 1440-TB-H XM-947 Dynamic Vibration Terminal Base Uživatelský manuál Strana 8