Installation Manual

© 2014 Magnum Energy, Inc.Page 33
Setup
CAUTION: The C/5 or C/20 charge rate settings are not requirements on how to set
your battery charge rate. For specifi c charge rate requirements, refer to your battery
manufacturer.
CAUTION: If multiple inverter/chargers are used on a single battery bank, ensure that
the total charge rate from all inverter/chargers is limited to the maximum charge rate
needed for your battery bank. The Max Charge Rate setting only limits the charging on
each inverter/charger individually, not on all inverter/chargers.
• 03F Max Charge Time – This setting is a safety feature that ensures abnormal conditions
will not cause the charger to hold batteries at a high voltage for a prolonged period of time.
This menu sets a maximum time the charger is allowed to operate in either the Bulk, Absorp-
tion, or Equalization charge modes. If the charger reaches the maximum charge time setting,
it will transition to the fi nal charge stage as set in the SETUP: 03G Final Charge Stage menu.
The “OFF” selection can be used if there is an application where 25.5 hrs is not long enough.
Default setting: 12.0 Hrs
Range: OFF, 0.1-25.5 Hrs
Note: If “CC/CV Controlled” displays on this menu’s screen, you will not be able to adjust the
settings as “CC/CV” has been selected as the battery type from the 03C Battery Type menu.
CAUTION: If using “OFF”, the batteries can be held at a high voltage for an extended
time. Monitor the batteries to ensure they are not overcharged.
Info: If the time the charger has been in Bulk, Absorption, or EQ charge modes exceeds
the Max Charge Time setting, the ME-ARC’s CHG LED blinks and “Max Charge Time”
scrolls across the LCD display.
Info: The Max Charge Time safety feature uses the time accumulated under the METER:
03A Charge Time display to determine how long the charger has been in the Bulk,
Absorption, or EQ charge modes.
Where should I set my Max Charge Time? To ensure a complete charge cycle is accomplished,
adjust the Max Charge Time setting to a time period that will normally be longer than the settings
in the following SETUP menu items: 03D Absorb Done Time/Amps/SOC. The Max Charge Time
setting has priority over these menus and will stop the charge cycle once that setting is satisfi ed.
Example: The Max Charge Time setting is 6 hours, but the Absorb Done Time setting is 8 hours.
After six hours in the Absorption charge cycle, the charger transitions to the fi nal charge stage.
• 03G Final Charge Stage – This setting determines what charge stage(s) occurs after the
Absorption Charge stage has fi nished.
Default setting: Multi
Range: Multi, Float, Silent
Note: If “CC/CV Controlled” displays on this menu’s screen, you will not be able to adjust the
settings as “CC/CV” has been selected as the battery type from the 03C Battery Type menu.
◊ Set Final Charge Stage = Multi – The Multi setting (which is short for “Multi-Stage”),
transitions from the Absorption charge stage to the Float charge stage. Once in the Float
stage for four hours with no DC load on the batteries, the charger will enter the Full Charge
stage (i.e., Battery Saver mode). In Full Charge mode, the charger automatically stops charg-
ing but is still on and actively monitoring the battery voltage. The charger will remain in the
Full Charge stage until the battery voltage drops below 12.7 VDC for 12-volt batteries, 25.4
VDC for 24-volt batteries, and 50.8 VDC for 48-volt batteries—at which time it will return to
the Float stage. The charger will continue to cycle between Float and Full Charge as long as
incoming AC is available. See Figure 3-12.
Note: These battery voltages are the fully charged voltages of a battery at rest.