Author Topic: testing the egs002 inverter board  (Read 36010 times)

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Offline ClockmanFrance

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Re: testing the egs002 inverter board
« Reply #420 on: January 19, 2017, 03:19:39 AM »
Hi lighthunter,

Pj do a modular board for their 15000W, ie they have sub boards for the 4 x 6off FET,s.

The 8000W PJ board, only 4 caps, was originally there early 15000W board, and is what I designed our New Power board around. But this early PJ board needed careful assembly and good soldering, something sometimes that PJ was lacking with QC.

I have a couple of 15000 PJ's with the FET sub boards. These seem to work well if the PCB's are conformal coated. PJ boards seem to come covered in solder splatter and flux remains. So all need washing and coating properly.
We discussed on here, somewhere, that the PJ resistor ladders with humidity, etc, tended to wander a bit.

One of my 15000W PJ boards OzInverter sits outside in a cupboard attached to a shed, so it gets everything.
However, that particular OzInverter never gets switched off.

If I recall, 'Oztules' got good results when he did a swap out on a PJ board, and replaced the PJ control board with a OzControl board with the 8010 chip, and modified a PJ Power board.
 

Offline lighthunter

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Re: testing the egs002 inverter board
« Reply #421 on: January 19, 2017, 05:10:56 PM »
Great info! yeah the never shuting off idea would eliminate condensation and temperature drift issues and no doubt there are many off-grid systems that run 24/7.
Thanks for your valuable ideas.
LH

Offline IoniCCC

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Re: testing the egs002 inverter board
« Reply #422 on: February 12, 2017, 09:47:19 PM »
Ross... I thought that too.
On one of them I was frugal with the caps for testing... and after a few hours at 3kw, the 2 caps I  did use were very hot. Then used four, and they barely got warm.... not a linear thing somehow.


.........oztules

@oztules, i get a problem with my EGS002. My board always blinking twice, even i short pins 1 and 2 to the ground. Any idea?

Thanks.

Offline Madness

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Re: testing the egs002 inverter board
« Reply #423 on: February 13, 2017, 01:43:09 AM »
2 blinks is over current as per the manual "Overcurrent:Blink twice, off for 2 seconds, and keep cycling"


Online oztules

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Re: testing the egs002 inverter board
« Reply #424 on: February 13, 2017, 04:24:23 AM »
Yes 2 blinks is current.... measure the voltage between pin 3 and 14 on the 8010. it should be zero if you have shorted 1 to 2 on the 002 board.

You may have an earthing problem there somewhere, or the 8010 chip is toast if there is no potential between 3 and 14 on the 8010, and the thing still flashes twice.

If the voltage on pin 14 is over .5 volts with respect to pin 3 ( gnd) it will trigger an over current condition. It it triggers and is less than .5v... the chip is gone.


...........oztules

Flinders Island...... Australia

Offline IoniCCC

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Re: testing the egs002 inverter board
« Reply #425 on: February 13, 2017, 07:37:31 AM »
Hey Oztules! , Thanks to reply.

I measure the pin 3 and 4, and get 4.65v. Okay. Then, i propositally short these pins, and try to power up the egs again. It worked!

But, i cant find the reason why the pin 3 has no ground.

Anyway, thanks for the advice.

Offline IoniCCC

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Re: testing the egs002 inverter board
« Reply #426 on: February 13, 2017, 08:06:11 AM »
I revised all grounds on the circuit, and i cant undestand why the pin 14 has 4,65v. If i short this pin directly with the ground, the board starts.

any ideias, guys? ;(

Offline IoniCCC

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Re: testing the egs002 inverter board
« Reply #427 on: February 13, 2017, 08:37:26 AM »
Finally! I have checked out the resistor through this line, in this case R33 and R7, and R7 has a problem with this solder.

I soldered r7 again, and voilá, it worked again! Thanks everyone!

Offline IoniCCC

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Re: testing the egs002 inverter board
« Reply #428 on: February 13, 2017, 10:16:30 AM »
I have one more question :

Can i replace FR107 for UF4007?

Online oztules

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Re: testing the egs002 inverter board
« Reply #429 on: February 13, 2017, 02:13:37 PM »
yes. use the uf4007.

Good you found the cause, and learnt a bit more about how it works..... thats the best thing about failure :)


...............oztules
Flinders Island...... Australia

Offline IoniCCC

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Re: testing the egs002 inverter board
« Reply #430 on: February 13, 2017, 02:54:04 PM »
Greetings, oztule!

You have any formula to calculate the capacitor for low pass filter LC, on the output?

Offline ss1

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Re: testing the egs002 inverter board
« Reply #431 on: April 06, 2017, 02:51:57 PM »
 :) ;) :D Soon upload AD files ...

Online oztules

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Re: testing the egs002 inverter board
« Reply #432 on: April 06, 2017, 03:30:07 PM »
Nice..... have you built it yet?

........oztules
Flinders Island...... Australia

Offline ss1

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Re: testing the egs002 inverter board
« Reply #433 on: April 06, 2017, 03:41:13 PM »
Nice..... have you built it yet?

........oztules


Sent to manufacture. After test i will report :)

Offline ss1

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Re: testing the egs002 inverter board
« Reply #434 on: April 20, 2017, 01:04:05 PM »
PCB's are here ... But not tested yet ...   8) I found a mistake like you see in the third pic. R22 goes directly to base of Q3