Rockwell Automation 1440-TTC06-00RE XM-362 Temperature Module - Manual (Page 14)

Publication GMSI10-UM008D-EN-P - August 2010
6
XM Installation
Requirements This section describes requirements and considerations for an XM system.
System Wiring Requirements
Use solid or stranded wire. All wiring should meet the following specifications:
• 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 300 V
• Soldering the conductor is forbidden
• Wire ferrules can be used with stranded conductors; copper ferrules
recommended
RTD Wiring Considerations
When using RTDs as inputs, give special consideration when selecting the
input cable. Select a cable that has consistent impedance throughout its entire
length.
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.
IMPORTANT
The XM-361 requires three wires to compensate for lead
resistance error. We recommend that you do not use 2-wire
RTDs if long cable runs are required, as it reduces the
accuracy of the system. However, if a 2-wire configuration
is required, reduce the effect of the lead wire resistance by
using a lower-gauge wire for the cable (for example, use
16 AWG instead of 24 AWG).