Bogart Engineering SC-2030 Technical Manual

Vol
ts
Amp
s
Bulk
Absorb
Float
Time counting (P14) runs during
absorb stage
Time counting temporarily stops whenever battery Volts
is less than P1.
Hours
Total battery system capacity P3
10-10,000 amp hours
(P1) Absorb Volts
10-35Volts
(P20) percentage overcharge amp-hr =
1-20% of previous day's amp hour discharge.
(P14) Max over voltage time
allowed: 0.1-10.0 hours
(P16) Float Volts
10-35 volts
(2) Absorb, charges at constant voltage= (P1)
The FIRST time after TM-2030 is powered: runs until either amps<P2 value OR until P14 Max time is reached.
For all times AFTER the first: runs until (amps<P2 AND that P20 percentage overcharge is reached) OR (until
P14 Max time is reached.)
Three stage charge control: Figure 2. This is closer to how most good conventional controllers charge lead
acid batteries--except that this controller also has the capability (if desired) to return a specified number of amp
hours to the batteries (compared to the most recent discharge) before going into "float". Also, it has been
considered best suited for AGM or Gel type lead acid batteries--however recently some manufacturers are
recommending the four stage profile (next page) for AGM type batteries. Liquid electrolyte batteries can usually
benefit from four state solar charging (Figure3).
To select three stage charge control, set program P21 (finish amp value in %) to "OFF." Then for charging, set these program
values: P1, Aabsorb volts. P14, max absorb time. P16, float volts and optionally P20 (% overcharge amp hours.)
To properly monitor "percent full", also set these program values: P2: charged setpoint amps (amps =P2% times P3), P3:
battery system capacity.
(3) Float, which holds charging to a lower float voltage (P16) until the voltage
declines below 12.4V for 12V systems (or 24.8V for 24V systems) or %Full
goes below 98% followed by available solar charge resource. This stage may
not occur every day in systems that are charged with only a solar resource, and
then discharged during daily periods of solar absence.
3 state charging profile
(AGM or Gel batteries)
Figure 2
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