Limu Computer Technology LMS4810 Manual page 7

Abnormal phenomenon
Though there is sufficient sun-
shine, charge indicator light is
off.
Load indicator light blinks
slowly.
Load indicator light blinks
quickly.
When load is closed, it shows
sufficient energy;When load is
opened, it enters low-voltage
protection mode.
Status shows full-charge soon
after charge process is started.
Voltage parameter
Over 14.6V
14.4V 16.8V
ChRet 13.2V
EQU 14.4V
Bulk 14.0V
ABS 14.2V
Float 13.8V
Close 11.0V
10.0V 12.0V
ClsRet 12.4V
10.8V 12.6V
Coeff -0.021V
Parameters
Light-control start threshold(PV)
Light-control start delay
Light-control termination delay
Load overcurrent threshold
photovoltaic panel is disconnected or connected inversely.
Load is overcurrent.
Load is in short circuit
Bad connection of battery or wire diameter is too small.
Overvoltage or overcurrent of charge
Tab 3. Faults and Solutions
12V 24V
29.2V
28.8V 33.6V
26.4V
28.8V
28.0V
28.4V
27.6V
22.0V
20.0V 24.0V
24.8V
21.6V 25.2V
-0.042V
Tab 4. battery voltage parameters
LMS2410 LMS2420
5V/10V
13A 26A
Tab 5. Threshold parameters
Possible cause
48V Remark
58.4V Maximum charge voltage
57.6V 67.2V
52.8V When charge return voltage and battery voltage is
lower than this set value, controller will enter Direct-
charge.
57.6V Equilibrium charge
56.0V Direct-charge
56.8V Voltage of constant voltage charge
55.2V Floating voltage
44.0V Low-voltage protection voltage. When battery volt-
age is lower than this value,
40.0V 48.0V controller closes the load and enters into protection.
49.6V Low-voltage return voltage. After entering into
43.2V 50.4V low-voltage protection,battery voltage will resume
this set value and open the load again.
-0.084V Single battery temperature compensation voltage
range: -3.5mV
LMS2430 LMS4810
10S
60S
39A 13A
LMS series intelligent solar controller — 7/8
Solution
Check if photovoltaic panel is
intact and polarity is correct.
Check if the load is normal.
Check if the load is normal or
connection is in short circuit.
Check connection wire of bat-
tery or replace it with larger
wire diameter.
Check if maximum charge cur-
rent setting fits the maximum
charge current of battery. If
necessary, modify charge cor-
recting voltage to lower down
charge voltage.
-0.5mV
LMS4820 LMS4830
15V
26A 39A