Guess I read this a bit differently than others
The way I read it is that the new controller has optional voltage sense capability, while the older model required the user to connect the sense wires
From my perspective voltage sense is a very nice feature
Easily compensating for a few hunderd milli volt losses experienced in larger cables with high currents - small systems say 15amp and below might not need it
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February 25, 2013 - Someone on another forum asked what the differences are between the new MPT-3048 controller and the older 3024 models. Here's a summary of the highlights:
•Will support 12/24/36/48v battery banks
•100v max Voc PV limit
•Battery sense wires are now optional (the 2nd gen 3024 required them)
•Auto fault resolution (faults will not require the user to restart the controller)
•Reverse battery and input short protection
•User-upgradable firmware
•Auto pass-thru on startup after initial setup (will power down/up and start charging without any user interaction after initial setup)
•More extensive data logging and more real-time data accessible with the PC connection and software utility
•Historical data log accessible via PC
•Master-slave option for two controllers
•Modified MPP tracking algorithm with new triggers for sweep and user-adjustable options
•Real-time data always remains on display now, even during sleep
•Adjustable battery temperature compensation
•Adjustable current limiting
•User-adjustable calibration
•Slightly larger and heavier physically, more robust thermal design
I'll have a full spec sheet out on the 3048 controller soon ... it's on the long list of things to do, but not toward the top quite yet. I'll post a link to it here as soon as it's available.
