You don’t need to open the cable,
See in this photo how the gold pin contact at #7 is missing?
You can remove it with a small flat head screw driver. It comes out quite easily.
You can see some minor damage on the plastic part just below the pin groove, that was where the flat head was placed, and then some pressure applied to pry out the gold pin.
Ok Thanks
Hi Guy
With pin 7 disconnected, does this have any side effects?
Will the cerbo still communicate with the inverter?
Do I leave the cable with pin 7 disconnected as a permanent connection?
Thanks
Hi,
PIN 7 communicates a signal that the inverter is allowed to turn on or not. There are low level reasons that this has a dedicated pin, like for low powered BMS safety states where the inverter should be really off as much as possible to prevent a phantom discharge load from further draining an already flat battery that has no other method to protect itself.
In this case, for some reason that method is not behaving itself, and either the GX device is not sending, or the inverter is not receiving the conditions it wants to allow it to turn on.
All other communications are handled completely differently on other pins. This cable with a removed pin 7 will the be the (semi)permanent connection, unless we are able to further resolve why this might be occurring.
But in all cases till now, it resolves the situation without any real drawbacks.
Ok, Thanks for the explanation.
I tried removing the pin on the molded cable, but the pin would not come out.
I have made a new cable with pin 7 disconnected, so I will test this and see how it goes.
If possible please let me know if Victron comes up with a fix for this issue.
Thank you
Hi Guy
I have an update on removing Pin 7 from the VE bus cable.
I noticed a problem that when you use the cable with pin 7 removed for programming,
a low battery alarm comes on and shuts down the inverter.
Have Victron been able to solve this problem?
Thanks
Is Victron aware of the problem of the inverter not turning back on when connected to a Cerbo ?
How do you make Victron aware of a software/firmware/hardware fault with one its products?
