WS-12-250-DC does not wake up from Hibernation

[Perfectsim9]

Hello, I am having a very strange and somewhat random issue with my WS-12-250-DC labs. I am currently running two labs with similar results. All of which i have tried using every firmware from 1.3.6 to the current RC firmware. My first lab is running a WS-12-250-DC powering 5 Ubnt Rocket M5-GPS Radios with an average draw rate of 35watts. I am powering the WS-12-250-DC with either a Mean Well S-150-24 variable voltage converter or a Power Max 24V Charger / Converter. What i normally use for power setting are Warning: 25V Hibernate: 21V Wake up 24V. My logic behind this is when the site power e.g. running off of the charger / converter is turned off the system then runs on battery power. so while on AC the voltage sits @ 27.4 Volts and when the AC power is turned off the system drops to about 25 in a few min. This then lets us know that the site power is off. then the system will run on DC battery power a duration of hours (almost a day) and then goes to sleep. This all works fine and dandy no issues. What i am having an issue with is that the system very rarely if ever wakes up when the AC fed charger kicks back in again. for this setup i have tried removing the DC breaker or Fuse from battery to battery connections, i have tried 3 different chargers, 3 different battery combinations and 2 different Netonix Switches all with the same results. I am having the same issue with the variable voltage rectifier which only seems to cause an issue when i leave the voltage at about 21.1 to 21.2 volts for a while and then drop below 21 volts. Sometimes i simple crank it back up to 29 volts and sometimes it wakes back up most of the time 8 out of 10 times nothing. If i drop and raise the voltage rapidly e.g. 29V to 19V let it go to sleep and then apply 19V again it turns back on. I have 2nd lab identical but powering 4 Mikrotik routers as well doing the same exact thing. two separate builds in two separate buildings one on a table one in an enclosure. One theory i have is that while the Netonix switch is running on battery power and you apply a draw to the battery's that as soon the draw is removed the battery's recover a small amount of voltage and this would cause the Netonix an issue e.g. 21.0Volts on draw and then bounces up to 22.4Volts when no draw is applied and then the Netonix is looking at the current hibernate state voltage of 22.4 volts which is above the hibernate voltage thus it is not trying to wake up again. I though i would rule this out with the variable voltage rectifier if that was the case but no luck. The results the same the system will hibernate but will not wake up. I would simply run the system at 21.2 volts and then very slowing drop below 21 volts, let it site for a while and then crank it back up to 29 volts. Same results as when running of battery power. Any help would be greatly appreciated. I hate to admit that i have spend over 100 Hours on this lab and if i cannot get this resolved we will have to scrap our Netonix builds.

[Dave]

Perfectsim9

Thanks for your post.

All I can say is hmmmm, strange..i tested this many times & it always works, but you seem to be getting weird results.

We are thinking about it & will get back to you.

In the mean time, can you please post up the Status page for me showing firmware versions?

Dave

[sirhc]

I hate to admit that i have spend over 100 Hours on this lab and if i cannot get this resolved we will have to scrap our Netonix builds.

I think our reputation on fixing reported bugs speaks for itself? This is obviously a software issue and can be resolved. A temporary work around would be not not have the switch hibernate but instead simply turn off all the POE ports. I understand that this means the switch will be drawing several watts verses less than 1 watt when we fix the hibernation/wakeup issue (if we find something).

We are looking into your reported issue at this point and will post our findings as soon as we find something and post a new firmware.

[Perfectsim9]

thank you, can you give me an example how you set that up?

[Dave]

using lab supplies

[sirhc]

thank you, can you give me an example how you set that up?

Setup for ports to power off at voltage levels? That is on the same Tab as the Hibernate Wakeup (right below it)?

[Dave]

please post the power tab page with your settings & the status page showing firmware versions, thanks.

[Dave]

If you want, we can take this off line & communicate via e-mail, let me know.

[BaldwinCo]

Hello,

For what it is worth, I wanted to use the hibernate function at a solar only location and did a little testing with a variable DC power supply. We just ran a few tests with warning at 21 and hibernate at 19 and back on at 21 and it worked occasionally as we swept the voltage across the ranges. But given it did not work consistently, I set the hibernate to 16 and hope I never get there.

I have swapped out all of my ToughSwitch Pro and I am extremely happy with Netonix.

For the DC solar applications, I am halving my power because I can remove the inverter and the PV System monitoring hardware.

Thank You

[Dave]

BaldwinCo

Thanks for your post. I think part of the issue is when people are testing in the lab, using lab power supplys, and turning voltages up & down, they are not really replicating how fast (really slow actually) the battery voltage would be changing in the real world.

Our firmware was designed with a certain slow change of voltages, not the sudden change you get when changing a lab supply.

We are currently working on firmware to try & cover this sort of rapid voltage changes people are testing with in labs.

Dave