by flboy » Sun Dec 16, 2018 5:26 pm
OK, this is what I need to enter into my MT50 Controller for my Epever Tracer MPPT 40 Solar Charge Controller. The M50 allows the following and this is what I entered.
Battery Type - Flooded
Battery aH - 430aH (installed)
Temp Comp Coeff - .18a I am assuming is for 6 2V Cells... or .003a I set for 3mA or .003a.
Over Vol. Disc.: default for Flooded 16v
Charge Limit: default for Flooded 15V
Over Volt. Rec default for Flooded 15v
Equal Charge: default for Flooded 14.8 (did not change to the 15V.. should I? Is it important in this case)
Boost Charge: I think Boost = Absorption in this case? default for Flooded 14.6V
Float Charge: default for Flooded 13.8V (in range)
Boost Rec.: default for Flooded 13.1V
Lov Volt Rec.: default for Flooded 12.6V
Under Volt Rect.: default for Flooded 12.2 V
Under Volt. Warn: default for Flooded 12V
Low Volt disconnect Voltage. :default for Flooded 11.1V
Discharge Limit: default for Flooded 10.6V
Equalize Time: Link only mentions a max time. Left at default of 120 minutes.
Boost Time: Link for Absorption only mentions a max time. Left it at default of 120 minutes.
The following from the link does not correlate exact , but I can make sense of it. I did not change the Equalization voltages as noted above. Should I? Is that important in this case?
******************* From Link ***************************
At 12V:
Max Charge Current = 30% or less of Ah capacity (20 hour)
Absorption Voltage = 14.4V - 14.7V
Absorption End Point = Current change over 1 hour period of less than 0.1A
Max Absorption Time = 12 Hours
Float Voltage = 13.8V - 14.1V
Float End Time = No Limit
Equalization = 15.0V to 15.3V
Equalization End Point = Current change over 1 hour period of less than 0.1A
Max Equalization Time = 12 Hours
Temp Compensation = -.018V for every degree °C rise above 25C
***********************************
Anyone have the same controller and setup. What parameters are you using? Except for the parameters I can correlate, I am using the defaults for remaining limits/parameters based on defaults for the Flooded lead acid batteries.