I run a pool controller.
[LIST]
[*]Raspberry pi 5
[*]atlas carrier board with temp, ph, Orp, humidity, pressure
[*]Sequent super watchdog
[*]Sequent megabas - Building Automation hat- flow switch, enclosure temp sensors (3)
[*]Sequent 8 relay - Chlorine Pump, Muriatic pump
[*]24 volt power supply connected to BOTH mega base and watchdog
[/LIST]
Ran all winter (in my house), and set up outside and run for couple of months. Area is shaded. It is hitting high 90’s this week. Enclosure temp running about 20 degrees over ambient. At these temps, I have even seen the pi hit throttle temp 80C. Mega base has climbed to 72C. Watchdog runs cool, don’t know relay temp as none given.
I have seen megabas hit 72C and down again, but It seems that when pi throttles, Sequent cards seem to stop functioning. Relays do not respond, megabase io sensors do not respond. Watchdog seems ok. Atlas board still functions. Pi eventually cools at throttle speed, but sequent cards still don’t respond. Reboot does not restore function. Shutdown restart will eventulally correct issue. I have restarted on battery, and was surprised the megabase responded (no 24v supply).
Do I need the current direct 24v connection to both watchdog and megabase? Could this be an issue?
Is the throttling causing the lock up of sequent cards? Or is it just temp?
Is there a max operating temp for sequent cards?
Is there a way to throttle these cards?
Is there a way to shutdown/restart/reboot the sequent card while connected to operational rpi?
Thinking about adding fan cards to both pi and megabas. But can’t add to relay as I can only add 2.
Looking for suggestions.
