I'm installing a Victron Multiplus 12v/3000 and I am unclear on some of the setup/config issues.
My first question is about battery
capacity. My current/old IC unit (Xantrex SW2012) requires you to configure the total battery
bank capacity, in AH. The Victron does not appear to have that setting. Why is that? What was the Xantrex using that information for which is not required by the Victron?
Second, it seems like you either have to use the DIP switch config, or the software
config option (via some sort of USB/RJ45 cable which I do not have) - but I do have the Digital Multi Control Panel
. But the manual for that indicates you can only set a few config options via the control panel
. Is that correct? So, either DIP switch or software
, there is no way to configure all the options via the control panel? However, section 3.4 of the manual (titled "3.4 Configuration with a VE.Net panel") says "With VE.Net all parameters are accessible, with the exception of the multi-functional relay and the VirtualSwitch" - which seems to imply that the digital multi control panel could be used to configure all the options and avoid the dip switches (the reason I am going on about this is because once wired up and mounted, access to the circuit board and DIP switches is going to be super difficult.
Third, Absorption time and Adaptive Charging
Characteristic. It seems like the Victron has 2 options - fixed absorption time (4 or 8 hours) or "Adaptive Charging" absorption. Is this right? I'm thinking the fixed Absorption time could lead to disaster, keeping the batteries
at 14.4 for 8 hours, regardless of SOC? So I'm thinking to enable Adaptive Charging
. This leads to my question - how does it determine Absorption duration when the Adaptive option is enabled? Also, the fine print says if you enable adaptive charging, then the abosorption setting is the MAX - my assumption is I should set this to 8 hour max to give the system the most flexibility, with the assumption it will end absorption sooner if its algorithm supports that.
Fourth, "Converter Voltage" - DS2 (other settings) has 2 options, 115vac and 120vac. Which should I choose? My boat
is strictly US wired - shore power
is nominally 120v and my genset also puts out around 120v (118 more realistically). I am assuming I should set this to 120v. But the fact that this option even exists makes me wonder why? Why would anyone want to set the inverter
to output 115v instead?
limitation AC Input and how it interacts with the potentiometer on the remote
control panel. Supposing I config the AC input current
limit to 30a which is what we get from shore power
. Does that mean I can then use the pot on the control panel to dial that down to 25 or even 20amps? (I'm not going to get into the reason why I might want to do that for now) - but my assumption here is that this is how it works. I could not raise the limit via the dial on the remote
control above 30amps (since that is what I will set via the dip switches) but I can dial it down lower. Is this correct?
Sixth, AES (Automatic Economy Switch) - should I enable this or not? I cannot find much info about what this does, except it only works with a stand alone multi (I will have only 1, so stand alone) - and I understand that it basically reduces power
usage, which sounds like a good thing. But there have to be some drawbacks or there would be no option for this! What is the downside?
I will note, typically when not at the dock
, anchored out or sailing, I will leave the inverter
off to reduce power
draw, unless we are actually going to use an AC appliance, of which we have few like a microwave oven
, a vacuum, a coffee grinder, a rice maker, and a couple of other small appliances
. So, I find it no problem to just leave the thing off unless it is needed. I find my current inverter uses about 2 amps when enabled, when no loads are being used. I don't know what the Victron "overhead" is, but it can't be zero, so I will probably continue to disable it in practice when not in use. The reason I describe all this is because I wonder if the AES option has something to do with load sensing and whether this setting will be relevant based on the way I use the inverter.
Thanks very much, I know there are some experienced installers here who work
with Victron regularly and I really appreciate your input.
I have been disappointed so far with the Victron documentation
, I find it is less than thorough, compared to the Xantrex documentation
(of course, I am replacing my Xantrex with the Victron, so obviously I have concluded a good manual is no substitute for a quality piece of equipment).
Also, I have not been able to find any Victron forum - does such a thing exist?
Thanks again for your help, everyone!