Mm-Rc Remote Only; Bulk (Yellow); Absorb (Yellow); Float (Green) - Magnum Energy MM Series Installation And Operation Manual

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MM-RC Remote Only

The MM-RC provides three additional charging LED indicators to provide
information on the operation of the battery charger. Monitor these
indicators for at least 10 seconds to determine the charger status.

BULK (yellow) -

• On (solid) - Bulk Charging; the charger is delivering maximum current
to the batteries. The charger will remain in Bulk charge until 14.6 VDC*
is achieved (determined by the Battery Type selection**).
• Blinks On (1 time every 4 seconds) - Charger Back-off; charger
current is reduced. This occurs if: 1. The internal temperature is very
hot (the charger reduces the charge rate to maintain temperature);
or 2. The AC input voltage has fallen below 85 VAC (the charger
reduces the charge rate to help stabilize the incoming AC voltage).
• Off - charger is not in Bulk charge mode.

ABSORB (yellow) -

• On (solid) - Absorb Charging; the charger is in constant voltage
stage and begins after the bulk voltage has been reached. The DC
charging current will start to taper down in order to maintain the Bulk
voltage setting. The Absorb Charging time is 120 minutes
(determined by the Battery AmpHrs selection**).
• Blinks On (1 time every 4 seconds) - Charger Back-off; charger
current is reduced. This occurs if: 1. The internal temperature is very
hot (the charger reduces the charge rate to maintain temperature);
or 2. The AC input voltage has fallen below 85 VAC (the charger
reduces the charge rate to help stabilize the incoming AC voltage).
• Off - charger is not in Absorption charge mode.

FLOAT (green) -

• On (solid) - Float Charging; at the end of the Absorb Charging time,
the charger reduces the charge voltage to maintain the batteries at
13.4* VDC (determined by the Battery Type selection**).
• Blinks On (1 time every 4 seconds) - Charger Back-off; charger
current is reduced. This occurs if: 1. The internal temperature is very
hot (the charger reduces the charge rate to maintain temperature);
or 2. The AC input voltage has fallen below 85 VAC (the charger
reduces the charge rate to help stabilize the incoming AC voltage).
• Blinks On (2 times every 4 seconds) - Full Charge; this mode
monitors the battery voltage to determine when to continue charging.
After four hours in the Float Charge mode, the charger turns off and
goes to Full Charge mode. If the battery voltage drops to 12.9 VDC,
the charger will automatically initiate another Float Charge.
• Off - charger is not in Float Charge mode.
* These voltage settings are based on the BTS being disconnected; if
connected, these voltage settings will increase or decrease depending
on temperature around the BTS - this ensures correct charging.
** These settings are preset in the inverter (see Table 5, Inverter
Default Settings), but can be changed by the ME-RC50 remote.
©2006 Magnum Energy Inc.
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Appendix A - Remote Control and Monitoring
33