Bogart Engineering SC-2030 Technical Manual

(4) Float, which holds charging to a lower float voltage (P16) until the voltage
declines below 12.4V for 12V systems (24.8V for 24V systems) or % full goes
below 98% followed by available solar charge resource.
(2) Absorb, charges at constant voltage (P1). Terminates when
charging amps decline to (P2) % of capacity P3.
(1) Bulk, charges battery at maximum rate until the batteries
reach "absorb voltage" (P1).
Four stage charge control: Figure 3. This method has four stages, having an additional final higher voltage
"finish absorb" stage, also with optional capability to deliver a measured additional amp hour overcharge
(compared with the most recent discharge amount). It is suited to do a more thorough charging of liquid
electrolyte lead acid batteries--and recently some companies are also suggesting this for AGM type
batteries. This can better maintain their capacity.
Ch
arg
ing
Vol
ts
Ch
argi
ng
Am
ps
(P1 )Absorb Volts
10-35Volts
Total battery system capacity P3
10-10,000 amp hours
(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
Absorb stage terminates when
"Charged " setpoint amps =
When P21 not OFF, Max
finish volts = P15 value
When P21 is OFF, Max
finish volts = P1 value
4 state charging profile
for liquid electrolyte batteries
Figure 3
Bulk
Absorb
Finish Absorb
Float
Time counting (P14) starts here when P21 is not “off”.
Starts here when P21 is "off".
(Time counting temporarily stops whenever batt Volts is less
than P1. Resets to 0 when “charged.”
Hours
To select four stage charge control, program P21 (finish %amp value of P3) must NOT be "OFF." Then for charging, set these
program values: P1: Absorb volts. P2: Absorb end amps value. P3: Battery system capacity, amp-hours. P14: Max absorb time.
P15: Max finish charge volts, P16: Float volts. P21: Max finish charge amps and optionally P20: % Amp hours overcharge.
When these values are properly set, the TriMetric will also correctly measure "% Full"
(P16) Float Volts
10-35 volts
15 of 16
(2) Finish Absorb, limits current to (P21 % of capacity P3) amps but allows voltage
to continue to rise to up to (P15) volts.
The FIRST time after TM-2030 is powered up: terminates when amps has met V/A criteria
at least once OR until P14 Max time is reached.
For all times AFTER the first: terminates when (amps has met V/A criteria at least once
AND P20 percentage overcharge is reached) OR until (P14 Max time is reached).