Magnum Energy MM612 Inverter - Manual (Page 29)

©
2010 Magnum Energy, Inc.
Charge Mode (not available on all models)
Some MM Series models are equipped with a multi-stage battery
charger feature. This includes an automatic 4-stage charging process:
Bulk, Absorb, Float and Full Charge; and a manual charge stage:
Equalization (the ME-RC50 is required to enable Equalization charge).
The automatic 4-stage charge process provides complete recharging
and monitoring of the batteries without damage due to overcharging.
Constant
Current
Reduced
Current
Reduced
Voltage
Bulk volts
‘Adj
Charge
Rate’
Setting
Increased
Voltage
Constant
Voltage
Monitored
Voltage
No Current
Time
Float
volts
Monitored
Current
Absorb Time
(d etermined b y
the ‘Ad j Batt
Amp H rs’ setting)
Bulk
Charging
Absorb
Charging
Float
Charging
DC
Voltage
DC
Current
Full
Charge
Goes to Full
Charge after 4
hours in Float
Charge
Bulk and Float voltage settings are
determined by the ‘Battery Type’ selection
Figure 12, Automatic 4-Stage Charging Graph
Protection Mode
The inverter is protected against fi ve fault conditions, and in normal
usage it will be rare to see any. If there is a situation the inverter can’t
handle, then it will shut down and attempt to protect itself, the battery
bank, and your appliances. If there is a condition that causes one of
the following fi ve faults to be enabled, refer to the Troubleshooting
section to diagnose and clear the fault.
• Low Battery - Whenever the battery voltage falls to a low level (10
VDC, default setting) for more than one minute, the inverter will
shut down to protect the batteries from being over-discharged.
• High Battery - In the event the battery voltage exceeds a high
voltage level (15.5 VDC), the inverter will automatically shut down
— along with all connected loads — to protect the loads from un-
regulated AC output voltage.
• Overload - While inverting, the AC and DC sides are monitoring the
current levels. In the event of a short-circuit or overload condition,
the inverter will shut down.
• Over-temperature - If internal power components begin to exceed
their safe operating temperature level, the inverter will shut down to
protect itself from damage.
• Internal Fault - The inverter continually monitors several internal
components and the processor communications. If a condition oc-
curs that does not allow proper internal operation, the inverter will
shut down to protect itself and the connected loads.
3.0 Operation
23