LiFePO4 what should be the setting on my charge controller/inverter for LBCO?

Schneideer/xantrex has a default setting of 48 volts for the LBCO. Will discharging to this voltage level hurt my LiFe PO4 Fortress battery, or reduce the life cycles? Fortress recommends 50.5 volts, but that is not an option on my equipment.
Comments
And welcome to the club, the LBCO is an issue I'm sure will be addressed sooner or later by Schneider as they are working in conjunction with other battery manufacturers which require a higher value. Perhaps there will be a firmware update in the near future to address this, but for now it appears 48V is the maximum. The value is still safe, what voltage dose the BMS cut off discharge? Actually I'm in the same boat but never get so low to be of concern.......yet.
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
50.5 volts / 16 cells = 3.1 volts per cell = shallower but more cycles,
48.0 volts / 16 cells = 3.0 volts per cell = deeper but fewer cycles
Total Energy = sum of all ( kWhrs per cycle x number of cycles )
What is the net difference in total ( sum of all ) kWhrs generated between the two depths of discharge?
Contact Fortress and ask them exactly how this deeper discharge will affect the number of cycles and net kWhrs generated.
You should not worry at all that your LBCO is 48.0V, your system will hardly ever see it (unless you didn't spec it properly) and when it does it will result in approximately zero damage to the battery cells. The BMS in your Fortress battery most likely has 2.5VPC as its low-voltage cut-off (40.0V) so at 3.0VPC (48.0V) LBCO you won't even come close to that number.
I have toured many Lithium battery factories and have many years of experience in this field working with LFP technology.
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Ohmmu 100Ah LiFePO4 Group 31 Batteries x 20 (25kWh)
Sharp 170W x 27 + YingLi 230W x 16 (8.3kW)