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OhPinchy · 09-01-2020, 08:42 AM

I have been getting a repeated Power Failure - Controller message on my keypads. I get a failed to connect to UCM message when I try to connect via Comfigurator (though it did work yesterday for a while). I run all my house automation off the UCM Pi and that is offline also.
I tested the power input to the mainboard on my master Comfort panel and got a 15volt reading and a 14v reading on the output terminals that feed PIRs etc. (so power is making it into and through the board). The backup battery was down at 12.5v so I swapped it with one from my slave panel that was 15v.
I have had no power outages recently. Any ideas on what may be causing both the error message and the system being offline for Comfigurator and UCMPi? Thanks

***slychiu*** · 09-02-2020, 03:05 AM

Perhaps the UCM/Pi is sometimes drawing too much current from the Main Comfort PCB, together wth other keypds etc. If you have a Slave with battery backup, try connecting the UCM/Pi to that instead of the Main PCB. You may also need a separte 12V supply for the UCM/Pi if that does not fix it

**Swiss-Toni** · 09-02-2020, 06:18 AM

[user=1]slychiu[/user] wrote:

Quote:Perhaps the UCM/Pi is sometimes drawing too much current from the Main Comfort PCB, together wth other keypds etc. If you have a Slave with battery backup, try connecting the UCM/Pi to that instead of the Main PCB. You may also need a separte 12V supply for the UCM/Pi if that does not fix it

Quote:

Hi Slychiu is there a table of the amp pull on the cytech components:UCMsKeypadsRIOsSCSsRelaysObviously PIRs are outside of your remit, but it may go some way to help prevent power cycle issues and over demand on the system.

***slychiu*** · 09-02-2020, 06:32 AM

We do not have a table of all the devices but each product manual will state its typical current draw

OhPinchy · 09-02-2020, 06:39 AM

Thanks. UCMPi is powered from a completely separate 12v power supply so should not be affecting main panel power draw.

**Swiss-Toni** · 09-02-2020, 06:39 AM

[user=1]slychiu[/user] wrote:

Quote:We do not have a table of all the devices but each product manual will state its typical current draw

Thanks for that I must have ovelooked that in the manuals, and will start creating my own reference table.

***slychiu*** · 09-02-2020, 10:32 AM

Perhaps something in your system is intermittently drawing too much current.
Read the event log to check when this power failure event occurs