Renewable Energy Questions/Discussion > Automation, Controls, Inverters, MPPT, etc
Just got my new 48v/15kw powerjack
dochubert:
Today changing out that control board.
Note in the pic below that there is nothing plugged into the 2 pin plug next to the plug for the rainbow cable from the mainboard, bottom left of control board.
What's not plugged in here is that ground wire that should connect to the neg battery terminal. Powerjack forgot to install one. I failed to notice that it was missing till now. Did that contribute to the hi voltage event/failure? Probably.
Pulled the old control board and noted that resistor 117-1 is blown out on the source board. Nothing else obvious so will probably get a new source board and lfdriver and test it out... someday.
In the first of the above pics, note the blown resistor 117-1 and two ribbon cable connectors for two mainboards. The replacement board (second pic) shows only one connector. I guess powerjack must have known I was going to use only one mainboard (I didn't tell them!).
So changed control boards and made sure of connections, including that ground connector plugged in. Crossed my fingers, connected to batteries, and turned it on. It runs!
Good sinewave. Not going to put this one on the house till I'm reasonably sure it won't blow my stuff up again. Loaded it with a 1500w heater plugged into the 110v receptacle and a 200w 220v heater plugged into the 220v receptacle. Ran that for about 3 hours. Voltage drifted about 2 or 3 volts.
Not as rock steady as I would like but not spiking high. Tomorrow I will run a cord out to my freezer in the garage and run it along with the heaters for a few hours. Something besides resistive loads.
dochubert:
Forgot to mention that the frequency drifted a bit too. 59.7 to 60.34hz is what I noticed. Usually don't see that with powerjacks. Frequency is usually always steady - 60 point 1. Or 59.9. Whatever, but steady. Not changing/drifting. Maybe I should change that charger/output board too.
It's a thought.
I still want to know what those dip switches do. I want to know before I change the charger boards out. Hate having to guess on this stuff.
The smaller charger boards used on other model inverters have no dip switches. It's nice to have a choice but would like to know what the choice is! (and how to set the dip switches properly.)
Pete:
Well done Doc, maybe powerjack are actually a disparate group of back yard electronics assemblers. They seem to just build what they feel like, not much standardisation.
Anyway glad to see you got it running.
Hope it runs for many years now
Pete
dochubert:
Thanks Pete,
I'm not satisfied with it yet, though. Ran it some today loaded with my freezer and an 800 watt heater and a 400 watt heater. Voltage wasn't too bad but seemed less steady today than yesterday so shut it down after only a few minutes. If I can get some dip switch settings from Sean, I want to change that charger board too.
After losing another shipment of my parts today, hoping he'll be helpful about the settings.
solarnewbee:
Hey Doc,
Quick note, before it blew stuff up, did you set the hertz? Dumb question but the Navy and all that. Led bulbs don’t like 50 if they’re made for 60. Press of a button is all it takes as you already know but I don’t remember if you mentioned discussing it. If it’s working don’t diddle with it 😝.
I’ll hit you back soon
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