LMP1218-PWM Master Power Unit User Manual
IDM Technologie
5
The LMP1218-PWM can be configured to charge Lithium battery.
3.3
Power Supply Mode
If no battery is attached to LMP1218-PWM unit, it will work as a power supply automatically with
a 12.8VDC output.
3.4
PWM Solar charger controller
LMP has a built-in PWM charger for the service battery.
²
Max open voltage is 25VDC
²
Max supply current is 15A
3.5
Voltage Charging Relay (VCR )
LMP1218-PWM Master Power Unit has a built-in voltage charging relay (VCR), which can get
power from alternator to supply the system whilst the engine is running.
LEAD ACID BATTERY -- When the motor battery reaches 13.4VDC with threshold time delay, the
VCR will be engaged to allow power from alternator to supply the system. VCR will continue
being engaged until the motor battery’s voltage drops under 12.8VDC.
LiFePO4 LITHIUM BATTERY -- When the motor battery reaches 14.0VDC with threshold time
delay, the VCR will be engaged to allow power from alternator to supply the system. The VCR will
continue being engaged until the motor battery’s voltage drops under 13.5VDC.
The VCR will be disengaged when the auxiliary battery’s voltage reached 14.8V.
NOTE: If vehicle is fitted with a smart charging system (Variable Voltage or Temperature
Compensating), the VCR charge system may not function correctly and a DC-DC Charging
system is recommended
Please consult your local dealer or installer for further information.
3.6
Battery Low Voltage Protection (BLVP)
LMP1218-PWM master power unit has a built-in low voltage protection relay. It will disconnect
the load once the battery voltage drops below the threshold voltage. The default setting is
10.8VDC.
3.7
Manual Battery Switch
The LMP1218-PWM unit offers a convenient way to switch off the output of the auxiliary battery
