You need the isolator to be included. You have not misunderstood. The device is actually a FET isolator and not a voltage sensitive relay. A VSR works in a slightly different way.
I have the same question, but the answer from Yachtbird doesn’t quite clarify the question. Can someone provide a diagram showing the alternator, two (or three) batteries, the isolator and the charger?
I want to change my Philippi board charger to an IP22 30/3. The wiring diagram for this is not clear to me. Don 't understand why - and +1B AND B+ and B- are connected to my starter batterie and only +2 ist connected to the second service batterie. + of this batterie is brigded to the
first service batterie. This might have to do with the unknown function of this charger.
The wiring diagram of my engines show this
You can see that the 2 service batteries are brigded with +
The IP 22 do I just have to connect to starter + / - and the second service with +? Or separatly service one and service two wih the + ?
You got two engines, two alternators and two (sets of) starter batteries? Are those completely separate electrical systems or are their negatives common? Is there a house battery (maybe thats what you mean with service battery?)
For an isolated case you would need two separate, single output chargers.
For a common negative case you can use a triple output charger, but be aware that only the main output has active control over the output voltage. So in the schematic above, the battery on the left is monitored and the defines the charging algorithm of the charger. They also should all be the same chemistry. The other two outputs just follow this. Personally i would also use two separate chargers as well
Hi, Karl here, thank you for your answer. I have seen the wiring diagram for IP22. First I would like to know how to upload photos? I did it from my iphone and it didn’t work. I would like you to show the wiring diagram of my old Philippi charger. It is a miracle for me, but it was working with two engines (alternators). It seems, that the technik of marine chargers where the starter battery was charged first and after automatically the two others is not implemented in my new charger IP22. I m afraid that the complicated wiring of my old charger has to do with that. That’s why I’m hesitating to install the IP22 using the simple wiring shown in the diagram.
The producer of my former Charging tool told me that 2 of the cables ± are going to the 1. Batterie are only measuring lines. In modern charge they are obsolete. But now I connected the IP22 and only the first Battery is shown in the connecting app. I still have connected the 2. nd + with the 2nd Battery. From there it is bridged to the first Battery. Seems that does not work.Like to show you the wiring diagram. Unfortunately the upload of Photos still does not work from my iphone. Any idea how I can make it work?
Thats normal, thats what i tried to explain above. Its a single charger with two additional outputs, it measures only the main battery. The other two are just along for the ride
I guess the negative poles of both main and second battery are connected together. Then the second output should charge as well. But again, if the main battery is full and the charger has changed into float, then the second wont get much current
I dont know, im using android, maybe raise a new thread about that in the community feedback section
