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Is it necessary to use the Common terminal when installing Altivar Drives on Bacnet Network?

Published date: 16 October 2019

Issue:
Is it necessary to use the Common terminal when installing Altivar Drives on Bacnet Network?

Product Line:
Altivar Process Drive

Environment:
ALL

Cause:
Wiring / Programming

Resolution:
Per Level 3 in France, not doing so is a Non-Warranted application.
>> We always recommend to use 3-wire RS485 bus system, to avoid problems when devices have different potential vs. ground.  So, please follow our wiring diagram.
You can find many explanations why is it recommended - par ex. for Bacnet:

Explanation:  https://store.chipkin.com/articles/bacnet-why-you-need-3-wires-for-2-two-wire-rs485/

*** Risk of implementing 2-wire network is on the user's end ***

 


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