MidNite Solar MNROSIE7048M, Owner'S Manual

Page: 31 / 57

MNROSIE7048 MANUAL
31| P a g e 1 0 - 4 3 2 - 1 R E V : -
•
Ending Amps –
Amp setpoint at which the batts are fully charged. Commonly 1 – 3% of
the bank’s (20 -hr) Ah rating. The Rosie will go to Float when the Absorb Timer counts down
to 0 or when Ending Amps is reached, whichever occurs first. Using Ending Amps is a better
way to charge the batt bank properly and fully.
•
Battery Capacity -
Enter the bank’s 20 -hr, Ah rating. If the bank consists of parallel
strings, multiple the 20-hr rating of one battery by the number of parallel strings.
•
Amp Hour Efficiency
– Set to Auto and will consider the Batt Chemistry type selected.
Or manually program a specific %. Most Flooded batts start at 80%; Sealed/Gel batts at
95%; Lithium
– 94%.
•
Chemistry -
Loads up typical, default charging voltages for the selected chemistry. Useful
if the batt specs are unknown.
•
Max Charge -
This limits the Rosie’s DC amps to the batt bank. Check the batt specs. If
the max charging amps for one batt is 50A, for example, and you have one string of batts,
then the max is 50A. If you have two strings, then the max is 100A (2 x 50A). Internal PCB
temps will limit (reduce) the charging amps starting at 75C.
•
Master Whizbang Jr.
–
If using multiple CANBUS-connected MidNite devices, this tells
the system which one is connected to the WBJr.
o
Battery – Only one WBJr in system monitoring current to/from the battery bank.
o
Additive – If more than one WBJr in the system, the SOC% readings are
amalgamated.
o
3
rd
Party – Stand-alone current monitoring.
•
Charge Timers –
Count-down timers for Absorb, EQ, and Float; count-up timer for Time-
in-Float.
•
Min/Max Temp Comp –
Sets low and high voltage caps that the Rosie will not exceed
when temperature compensating the batteries. When the batts are cold, T-comp raises the
charge (i.e., Absorb) voltage setpoint. The Max Temp Comp setting comes into play here.
Conversely, when the batts are warmer than the reference temp, the Rosie will lower the
set charge voltages.
•
EQ Temp Comp –
Turns ON or OFF T-comp during the EQ cycle. Be mindful of an
elevated batt bank voltage in the winter when equalizing. This high batt voltage may
exceed the DC IN voltage limit on some inverters. Max DC IN for the Rosie is 65V.
•
Temp Comp mV/Deg C –
This is called the Temp Coefficient Factor. Commonly at
-5mV. Check with your batt manufacturer. Set to 0mV for Lithium batts; Lithium does not
want T-comp from the Rosie
– the BMS handles T-comp.
•
Temp Comp Ref –
Commonly 25C but check with the battery manufacturer. This is the
neutral or reference temp at which the Rose T-comps around. If batts are colder than the
Ref Temp, then the Rosie will elevate the charge voltage. If warmer, then it will lower the
charge voltage.