I bought a small UPS thinking I would use it for my modem, router, switch and ISY (using a filter of course) then I started thinking....I've read people saying you want to power up the PLM before the ISY otherwise there usually are problems.  If I put the ISY on the UPS then during a power failure the ISY would stay on but the PLM wouldn't as it's plugged directly into the outlet on the wall.  When power returns the PLM would be powering up after the ISY.

 

Should I put the ISY on the UPS or just leave it off to prevent the out of sequence powering up?

 

Also, is it ok to plug the PLM into the non-filtered outlet on the filter or is there some signal loss doing it this way?

Edited July 10, 201510 yr by zerop

Hi zerop,

 

It's really up to you. In the past 9 years, there has perhaps been a maximum of 10 (out of 10s of thousands) of ISYs that were impacted by a power surge/outage.

 

With kind regards,

Michel

Hi zerop,

 

It's really up to you. In the past 9 years, there has perhaps been a maximum of 10 (out of 10s of thousands) of ISYs that were impacted by a power surge/outage.

 

With kind regards,

Michel

 

 

Did I understand correctly that there may be problems with powering up the ISY before the PLM?

Hi zerop,

 

It depends on the number of seconds between the two events. ISY tries 3 times (a maximum of 20 seconds) to connect to the PLM on boot up.

 

With kind regards,

Michel

How about one of Tesla's battery packs, a whole house UPS!

I took a little different approach given my abilities and current needs. I have the ISY Series Controller on a shared UPS system which monitors the power to the circuit to the PLM.

 

If power is lost to the dedicated PLM circuit it will invoke a program to cycle the power to the ISY Series Controller. It has been programmed to delay the turn on sequence for 10 seconds.

 

A safety watch dog timer monitors the entire homes electrical system and compares the incoming POCO power vs the point of use outlet for the PLM and ISY.

 

If both agree the power (voltage) has been lost it will initiate the power cycle. This insures the ISY is always rebooted if the PLM has lost a (defined) power ability.

 

With respect to Tesla's Power Wall lots of us are eager to see this product come to market in 2016.

I must be one of the 10 since I had to reboot my ISY following a recent power outage. :  )