Installation Guide

P.
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8
Diagnose * – Only for Lithium battery type, subjected to the Lithium battery initial voltage then
determine going to Soft start or Bulk charge; if the Lithium battery is protected by BMS,
the controller will automatically send the signal periodically to the battery terminal to
activate the BMS against protection.
Soft start - When batteries suffer an over-discharge, the controller will softly ramp the battery voltage
up to 10V for 12V battery, 20V for 24V battery.
Bulk Charge - Maximum current charging until batteries rise to Absorption level.
For Lead crystal battery type, the charge controller will deliver two step level of Bulk
charge, when the first level rises the battery voltage up to14.4V, then switch into the
second level of the 50% of the first bulk charge rate, until the Lead crystal battery
voltage up to 14.7V.
Absorption - Constant voltage charging and battery is over 85% for lead acid battery; a Li-ion
battery, LiFePO4 battery and LTO battery will close fully charging after absorption
stage, the absorption voltage level will reach 12.6V for Li-ion battery, 14.4V for
LiFePO4 battery; 14.0V for LTO battery. 14.7V for Lead crystal battery.
Equalization * - Only for WET battery or Calcium battery type, when the battery is deeply drained
below 10V or every 28 days cycle, it will automatically run this stage to bring the internal
cells as an equal state and fully complement the loss of capacity. (Lead crystal, Li-ion,
LiFePO4, LTO, Gel and AGM battery do not run Equalization charge)
Float Charge or Re-Bulk charge - Battery is fully charged and maintained at a safe level.
A fully charged Lead acid battery (Crystal, GEL, AGM, WET battery) has a voltage of
more than 13.8 Volts; if the lead acid battery voltage drops to 12.8V at float mode, it will
return to Bulk charge; Li-ion,LiFePO4 and LTO battery have no float mode; If a Li-ion
battery voltage drops to 12.0V after absorption stage, it will return to Bulk charge; if a
LIFePO4 battery voltage drops to 13.4V, or LTO battery voltage drops to 13.2V after
Absorption stage, they will return to Bulk charge. (voltage x 2 for 24V use)
LED INDICATION
LED indications
LCD
Display
LCD
B
ackligh
t
LE
D Color
ORG BLUE BLUE BLUE BLUE GREEN WHITE
Soft start charging ON ON FLASH OFF OFF OFF
Normal
Display
ON
Bulk charge (charged capacity <
25%)
ON ON FLASH OFF OFF OFF
Bulk charge (charged capacity <
50%)
ON ON ON FLASH OFF OFF
Bulk charge (charged capacity <
75%)
ON ON ON ON FLASH OFF
Absorption charging ON ON ON ON ON FLASH
Float charging ON OFF OFF OFF OFF ON
Solar weak (At dawn or dusk) FLASH OFF
Subject to battery voltage
In the night OFF OFF OFF
Solar good, VB < 5V ON OFF OFF OFF OFF OFF b03 /
bLv
FLASH
Subject to battery voltage
Battery good, solar reverse FLASH OFF P02/prc FLASH