EMX-8: Alarms with no apparent cause, due to power supply issues

Created by Jean-Claude Hirzel, Modified on Wed, 25 Mar at 6:41 AM by Jean-Claude Hirzel

EMX-8 Alarms for no apparent reason, due to power supply



Problem

It has reportedly been observed (primarily in warm weather) that if the EMX-8 is powered by a KNX power supply (unrestricted output, yellow/white terminal, 29V DC) instead of, for example, the SPE-24, a sensor may trigger a fault without apparent cause.



Workaround

Use a power supply with a choke


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