WESTLOCK CONTROLS CORPORATION
280 N. MIDLAND AVE., STE. 258, SADDLE BROOK, NJ 07663 TEL: 201-794-7650 FAX: 201-794-0913
www.westlockcontrols.com
10/5/2013
TECH-477/D.W.O. 21424
Page 198 of 206
16 Appendix E - Grounding Schematic
1
CONNECTION FROM DP/PA COUPLER TO POSITIONER IS 0.8
mm
2
MBP TYPE A CABLE
(BELDEN 3079A OR EQUIVALENT)
MAXIMUM DISTANCE 1900 METERS OR 6200 FEET.
2
SHIELD SHALL BE CONNECTED TO GROUND AT ONE POINT
ONLY IN ORDER TO AVOID GROUND LOOPS AND NOISE
INTERFERENCE.
3
THE FOLLOWING TABLE, PER IEC61158, INDICATES THE
MINIMUM DISTANCE BETWEEN CABLE TRAYS AND CONCUITS
CONTAINING LEVEL 1, AND 64VDC, 25VAC < 450VAC OR
>450VAC.
PROFIBUS
PA
60VDC OR 25<450
VAC
60VDC OR 25<450
VAC
Any cable subject to
ray exposure
PROFIBUS PA 10
CM
20CM
50CM
60VDC OR 25<450
VAC
10 CM
10 CM
50 CM
> 450 VAC
20 CM
10 CM
50CM
Any cable subject to
ray exposure
50 CM
50 CM
50 CM