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+--- Forum: Expansion Modules (https://www.comfortforums.com/forum-91.html)
+--- Thread: Slave expansion Module 01 + 02 (/thread-4868.html)
- slychiu - 03-18-2018
So when you connect a shorting link (instead of PIR) to zone 17, when you open the link (to simulate PIR open) does the zone report ON, off, on, off , or does it report just ON (which is correct)
We need to isolate the PIR out and replace it by an open or short to determine what ois the fault
There is no difference between a PIR and and open /short contact in its effect on Comfort
- Swiss-Toni - 03-19-2018
I went through the process of the linking zone to com and it behaved as it should(17 to 32) SEM/LEM However I tried a method of taking the power directly from the 12V battery and the PIR worked as it should with no false activation no flicking between active and inactive. My previous assumption that there is an issue with the power supply feeding the PIR was correct, The power for the PIR was always taken from the 12V & COM off the SEM until i tired the direct method as mentioned. I am now under the impression that their maybe a fault with the PSU on the sem not being able to power up the PIR sufficiently or it is intermittent fault on the the PSU output.
I have not been aware of this on my system before as I have not had PIRS attached to the SEM/LEM I have had other equipment that was not dependent on the SEM providing any power
- slychiu - 03-19-2018
Thanks That make sense
Can you check the voltage at 12V output of Comfort when the PIR is connected up.
It should be 12V or aboive
- Home - 03-19-2018
Is there a chance you have an OLD LEM ?
Symptoms are that of you fitting an C1 LEM board ! get chiu to check the printed serial no on the board !
A
- Swiss-Toni - 03-19-2018
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)
- Swiss-Toni - 08-10-2018
Further problems with SEM zone 20, No matter what configuration I set it too, it will only read as active (unless set as n/o in zone types) it is connected to a simple door contact without eol, the cotact works fine when connected to any other zone.
When I completely remove all physical connections to the zone it still reads as active when it should read inactive.
When the zone is bridged it still reads active (as it should, but when you remove bridge still reads active) Due to other problems I am starting to think that this is a faulty SEM, Unless someone else has had a similar problem and was able to correct it.
I am going to do a cheeky test as I have got another sem for a customer and test it on my system to see if it functions correctly......
- Swiss-Toni - 08-10-2018
Eureka! Resolved one issue, the blue connector was not making full contact, the only thing I did not check or swop, this still does not explain why the system still does not give the correct information to the status of the zone (active/innactive......
- slychiu - 08-11-2018
If thre zone type is Normally Closed, it should be Inactive when bridged and Active when open. Active all the time means that the zone is always openBad contacts on the terminal block would certainly cause it to be active all the time
- Swiss-Toni - 08-11-2018
Issue resolved, The sensitivity on the Zone type was set at 50ms for some reason the zone itself although set at open could not be reconciled at this speed and always reported it as active, by changing this to 200ms the zone started to display as inactive and active when in use.I do not see why the zone should do this, even when it was completely disconnected, it still reported the zone as active.My only thoughts on this now is that there is a firmware issue with the zone type & sensitivity range (On my system it only applies to Zones with less than 200ms)
- slychiu - 08-13-2018
If the zone is always reported as active, when it is not being changed the sensitivity does not affect it at all
It should not be a firmware issue because zones and sensitiviities have been used for 20 years
check that the Comfortt and Slave firmware are uopp to date, if not upgrade to the latest