Morning 

I Have a 7.2 Axpert /Kodak Card that have over 6 years service behind it at 70% capacity all the time

This unit stop to detect the battery even after it starts up from the battery it flashed the battery as faulty with 0Vdc 

After investigation found C116,C132,C78,C79,C95 faulty also replaced U5

Now inverter starts up and stays on but have a error 32 constantly

 

Any Ideas 

thank you

 

 

Could you have forgotten to replace some cable(s) associated with the display's comms wires?

Perhaps some problem with the little comms board inside the inverter, especially capacitors and optos.

Possibly fuses or capacitors inside the display.

Thanks for the replay

i Have tested 4 Control card all the same Change out all three cables to display that included power communication and the on of button Have changed the 485 cable from

the duplex card inside the lid to the display 

Does the u5 %v Voltage regulator 7805 have something to do with the communication card processor ??

The Display was working fine before changing out that regulator and caps

Thank you

 

Morning Coulomb

I have Sorted out the The Error 32 That u5 voltage regulator was the issue After replacing it again The system started up normally. One question I do have is how does c116 that was blown interfere with the battery voltage reading that showed 0 v   At the start of the repair  the original issue with this Inverter was not detecting battery at all reading on display for battery also showed 0 V but it did manage to start up from battery with no Error codes

 

 

On 2023/10/23 at 2:48 PM, BancoSolar said:

One question I do have is how does c116 that was blown interfere with the battery voltage reading that showed 0 v

@BritishRacingGreen has reported that a lack of -12 V power affects the measurement op-amps, and the battery voltage is the most important of these. It's because the measurement op-amps use +12 V and -12 V rails; the type of inexpensive op-amps used can't operate right down to zero volts input. However, usually the lack of -12 V results in measuring too high of a battery voltage. I guess there must be some mechanism whereby the measurement can end up zero.

Morning Coulomb

Thanks for the response

make sense

Perhaps you can assist with another card that i am looking at

5Kw Card Starts up normally then shuts down AC output 5 sec After 5 Sec Restarts ac Output and shuts down ac Output again but in a shorter time interval

the more it starts and shuts down the shorter the time interval What I have tested and found is that the TX9 shutdown and loses incoming voltage but in the way a

cap will discharge slowly dropping out I Am busy looking at U10 But doesn't want to start stripping everything as this is a new card received from Voltronic via our suppliers

Only Battery Connected

No Load connected

If AC connected It charges Battery as normal and functions normal until you need to use the battery only

 

any ideas before i start removing components

 

thanks

 

 

 

4 hours ago, BancoSolar said:

this is a new card received from Voltronic via our suppliers

Triple check that the battery voltage isn't collapsing. When the DC-AC converter starts, there is a sudden surge of power draw; if you are testing with a tiny battery or weak power supply, it may be that the battery voltage collapses with the load. The newness of the board has to count for something.

I wonder if it's old stock, so that capacitors could have dried up even though the board has seen no active use. Perhaps check a few chips and/or the PCB for date codes.

4 hours ago, BancoSolar said:

any ideas before I start removing components

Check U10 pin 7 (Vcc), and U10 pin 1 (compensate input, pulled low to reduce output). U10 pin 6 (output), Q36 drain. From the results of these measurements, you should be able to plan another series of tests before components come off. Assuming that the battery is OK, I would suspect the control circuit pulling the compensate input low; if so, check U7 and surrounding components.

Morning 

Swapping out U7 Solved the issue of restarting 

Inverter running now 5 hours on test bench at 50% capacity all looks good

 

Thanks You