Sensata MAGNUM ENERGY MM Series, Руководство пользователя

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© 2016 Sensata Technologies
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Operation
Constant Current Reduced Current
Reduced Voltage
Absorb Volts
‘Adj Charge
Rate’ Setting
Increased Voltage Constant Voltage
Monitored Voltage
No Current
Time
Float Volts
Monitored Current
(per the ‘Adj Batt
AmpHrs’ setting)
DC
Voltage
DC
Current
Goes to Full
Charge after 4
hours in Float
Charge
Absorb and Float voltage settings are
determined by the ‘Battery Type’ selection
Full Charge Float Charging
Absorb Charging
Bulk Charging
Absorb Time
Figure 3-1, Automatic 4-Stage Charging Graph
Battery charging – The MM1212/MM1212-G Series models are equipped
with an active Power Factor Corrected (PFC) multi-stage battery charger.
The PFC feature is used to control the amount of power used to charge the
batteries in order to obtain a power factor as close as possible to 1 (or unity).
This causes the battery charger to look like a resistor to the line (forces the
charge current wave shape to mirror the voltage wave shape). This feature
maximizes the real power available from the AC power source (shorepower
or generator), which translates into less power wasted and a greater charging
capability than most chargers available today.
When an AC power source is connected to an inverter that has a battery
charger, the inverter monitors the AC input for acceptable voltage. Once
the inverter has accepted the AC input, the AC transfer relay will close and
charging will begin. Once charging, the DC voltage is monitored to determine
the charging stage. If the DC voltage is low (
≤ 12.9 VDC), the charger begins
bulk charging. If the DC voltage is high (>12.9 VDC), the charger skips the
initial Bulk/Absorb Charging stages and goes directly to
fl oat charging.
The multi-stage charger can use up to fi ve different charging stages to help
monitor and keep the batteries healthy. The fi ve stages include an automatic
4-stage charging process (Bulk, Absorb, Float, and Full Charge), and a manual
Equalization (EQ) charge stage. The automatic 4-stage charge process provides
complete recharging and monitoring of the batteries without damage due to
overcharging (see Figure 3-1). The Equalization stage (requires the ME-RC50
remote) is used to stir up strati
fi ed electrolyte and reverse any battery plate
sulfation that might have occurred.
While charging, the unit may go into Charger Back-off protection which
automatically reduces the charge current to the batteries. This is caused by:
1.
The internal temperature is too hot—the charger automatically reduces
the charge rate to maintain temperature; or,
2. The AC input voltage falls <85 VAC—the charger reduces the charge
current to zero to help stabilize the incoming AC voltage; or
3. FET temperature.