Bogart Engineering SC-2030 Technical Manual

Bogart Engineering
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to P15 voltage.
P22: The "charge profile" entry program: simultaneously programs all of above eight values based on system volt-
age and the battery type selection. See Table 4, page 16 to see the eight values actually programmed for each
profile.
6.5. What determines when SC-2030 goes into float:
these are also shown in graphs on page 14 and 15.
For the “3 state” profile: Timer starts counting with P14 time when goes into “Absorb” state.
The first time after the charger is turned on. Goes into float when (Amps drops below P2*P3) OR (Timer expires.):
After the first time: (Amps drops below P2*P3) AND (% overcharge>P20)} OR (Timer expires with P14 time.):
For the “4 state” profile: Timer starts counting with P14 time, as shown on 4 state charging profile, page 15.
The first time after the charger is turned on: Goes into float when (Amps drops below P2*P3) OR (Timer expires.):
After the first time: {(Amps drops below P2*P3 at least once during Absorb) AND (% overcharge>P20)} OR (Timer
expires with P14 time.):
6.6. Battery Equalization: how to initiate or terminate the process.
TM-2030 ver. 2.2 or higher. Equalization is a process of overcharging a battery that in the past may have been
undercharged. Undercharging can cause “sulfation” of the battery which will cause it to lose some capacity to hold
energy. Equalization is an overcharge that can help restore the damage done by under charging. For example, you might
want to do this if a reading with a hydrometer of the specific gravity of the battery electrolyte is lower than what the
battery manufacturer recommends.
Description of what the SC2030 does (with TM-2030) when equalization is invoked: First, it will attempt to charge the
battery until it reaches the “Absorb” voltage that has been set in program P1. Then it stays in “Absorb” until the
charging amps drop below 5% of the P3 (“amp hour”) programmed value. Next it switches to a “current regulate” stage
that limits the current (in amps) to a maximum value of 5% of the P3 programmed value while allowing the voltage to
rise no higher than the P15 value. It counts the total time for step 3, and when 2 hours have accumulated it goes into
“float”, thus terminating the equalization. If the P1, P3 or P15 values are not what you want, temporarily change them
during equalization. For longer times, repeat the process. IMPORTANT: If P8 is being used to limit battery voltage, it
may nullify the benefit of equalization unless you adjust it higher than the P15 value.
How to initiate or terminate the equalization process: 1. Use the SELECT button to observe the “Days Since Equalize”
display. This is one of the “Extra data” items shown at the bottom portion of the front panel label of the TM2030. The
display will show “dSE” (Days Since Equalized) alternating with a number of days. 2. Hold the RESET button down for
about 5 seconds to reset the Days to 0.0. If they are already 0.0, then this step need not be taken. 3. With 0.0 showing
in display, push RESET again for about 5 seconds—it will show “Equ”. This initiates the equalization described above.
If it is desired to terminate the process, use SELECT to again get to this display, which will be show “Equ” unless the
equalization step has ended push the RESET button for 5 or so seconds and it will go to “0.0” thus terminating the
equalization. To lengthen the process, you may then restart at any time.
Warranty and customer service
Limited warranty
The SC-2030 Solar Charge Controller is warranted for three years against any manufacturing defect. Any controller not
meeting the specification or rated performance shall be replaced or repaired, at Bogart Engineering’s discretion, provided it
has not been subjected to abuse or misapplication. For warranty service, please email [e-mail]. A
return merchandise authorization is required for all merchandise to be returned to Bogart Engineering.
How to obtain customer service
Please review our support page before attempting to contact us. Our distributors are able to answer simple
questions about Bogart Engineering products. For technical support, send an email to bogart@bogartengineering
and someone will assist you.
www.bogartengineering.com