View single post by Swiss-Toni

Posted: Monday Mar 19th, 2018 09:41 pm

Joined:	Thursday Sep 15th, 2011
Location:	Greater London, United Kingdom
Posts:	349
Status:	Offline

The voltage drops from 13.68V to 13.24V +-1 as though it were pulsing,
Removing all attachments from the 12V & Com Voltage reads as 13.69(70)V to 13.40 (+.05)V pulsing every second or so
this happens regardless of the PIR being attached
The voltage rating for the PIR is anything between 12v & 30V so not sure what is going on anymore as the voltage drop is not that significant enough to cause a trigger.
The only other things attached to the PSU on the SEM are:
1 X KT03 keypad
2 X SCS 6 switches

The LEM & SEM board is roughly 1.5 years to 2 years old
Serial Nos
LEM C089008
SEM P052121

Just done the same test on main comfort Panel and it has similar voltage fluctuation but it does not trigger PIR
PIR have been moved to main panel as they are not affected in the main panel (comfort II Ultra)

Last edited on Monday Mar 19th, 2018 09:53 pm by Swiss-Toni

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