Cable Guidelines Summary - Honeywell Series A User Manual

Fieldbus interface module

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Table of Contents

14. Appendix E

14.1. Fieldbus Wiring Considerations

#18 AWG, shielded, twisted

#22 AWG, multiple-twisted,

pairs with overall shield

#26 AWG, multiple-twisted,

pairs without shield

#16 AWG, multiple

conductor, no twisted pairs

with overall shield

Another rule of thumb based on Fieldbus Foundation published guidelines is for the

length of spurs and how many devices can be on various lengths of cable as listed in the

following table.

Number of Devices

The spur length limitations are for spurs with one device each. Please refer to

the Fieldbus Foundation AG-140 Wiring and Installation Guide for rules on

multiple devices per spur.

Cable guidelines summary

Total cable length is the sum of trunk and spur lengths. If different cable preference types

are used, apportion each type against its limit and be sure the total is less than one (1).

Experion PKS Series A Fieldbus Interface Module User's Guide

(Meters/Feet)

Maximum Spur Length (Meter/Feet)

No spurs allowed

Experion pks series a