V.
Regulator Operation
The MC-612 regulator’s microprocessor controlled charging system uses a sophisticated, multi-stageprofile to
deliver maximum charging output, while protecting the batteries from overcharging damage. When the regula-
tor is first turned on, the processor performs a quick one-second self diagnostic assessment. Following that
diagnostic, the MC-612 initiates a charge program as follows:
1.
Start Delay - Factory set at one second. Can be user-adjusted to a maximum of 200 seconds in the regulator’s advanced
programming mode. See Advanced Programming section for adjustment instructions.
2.
Soft Ramp - Slowly increases voltage to bulk preset levels based on battery program selected.
3.
Bulk Charge - The most aggressive of the charging stages. Voltage is held at a pre-set level, specified by battery pro-
gram selected, for a set time period. Factory-set bulk time is 30 minutes.
4.
Calculated Bulk Charge - Holds voltage at bulk level for six minutes, then calculates battery condition by comparing
existing voltage, time at voltage, and field percentage to target values. If values are met, the regulator advances to the
next stage. If values are not met, the regulator extends the bulk charge time by an additional six minutes and com-
pares real-time to target values. This will re-occur until all values are met.
5.
Ramp to Absorption.
6.
Absorption Charge - Regulator continues to control the alternator’s output voltage for an additional 30 minutes, typi-
cally at two-tenths of a volt less than bulk voltage (based on battery program presets).
7.
Calculated Absorption Charge - Holds voltage at absorption level for six minutes, then calculates battery condition by
comparing existing voltage, time at voltage, and field percentage to target values. If values are met, the regulator
advances to the next stage. If values are not met, the regulator extends the absorption charge time by an additional
six minutes and compares real-time to target values. This will re-occur until all values are met.
8.
Ramp to Float.
6.
Float Charge - Regulator continues to control the alternator’s output voltage for an additional 30 minutes, typically at
a volt less than bulk voltage (based on battery program presets). Regulator will hold voltage to float level for two hours
(time duration is user-adjustable). After that initial fixed time period, the regulator can respond to increased charg-
ing demand by reverting to absorption voltage. After six hours of continuous operation, the regulator will automati-
cally revert to absorption voltage through calculated absorption and back to float charging stage.
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Summary of Contents for Max Charge MC-612
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