Rockwell Automation 1440-TB-A XM-940 Dynamic Measurement Terminal Base - Manual (Page 9)

XM-940 Dynamic Measurement Terminal Base 9
Publication GMSI10-IN020C-EN-P - October 2013
Wiring Requirements
Use solid or stranded wire. All XM wiring should meet the following
specifications:
• 0.34…2.1 mm
2
(22…14 AWG) copper conductors without
pretreatment; 8.4 mm
2
(8 AWG) required for grounding the DIN rail
for electromagnetic interference (EMI) purposes
• Recommended strip length 8 mm (0.31 in.)
• 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
ATTENTION
Do not wire more than two conductors onto any single terminal.
ATTENTION
This product is grounded through the DIN rail to chassis ground. Use
zinc-plated, yellow-chromate steel DIN rail to assure proper grounding. The
use of other DIN rail materials (for example, aluminum or plastic) that can
corrode, oxidize, or are poor conductors, can result in improper or
intermittent grounding. Secure DIN rail to mounting surface approximately
every 200 mm (7.8 in.) and use end-anchors appropriately.