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Solar charge controller Smart-MPPT Li series User Manual

Page 3 of 5 pages

  Smart-MPPT Li series controller with advanced light 
control function. The modes of lighting can be based on 
customer needs.

7. Output Function

7.2

 

Dusk to Dawn 

(

D2D

)

Dusk to Dawn(D2D)

Light on

Light off

D/N Thr

D/N Thr

Sunset

Sunrise

D/N Dly

If “Time1” of “DC 5-Stage” is set to “D2D”,the 
controller works in dusk to dawn mode.

!

1.

Smart-MPPT

 Li series controller is set to D2D mode, 

the corresponding dimming setting is still valid.                          
2. If “Time1”is set to D2D mode, “Time4” can not be 
set to T0T mode.

7.3 Five-stage Night Mode

Time1 Time2

Time5

Time3 Time4

Light on

Light off

D/N Thr

D/N Thr

Sunset

Sunrise

D/N Dly

You can set the Time 1-5 and Dim 1-5 with S-Unit.

7.4 T0T mode can set the load on time before 
morning coming

(

)

D/N Thr

Time1

Time

2

Time5

Time3

T0T

Light on

Light off

D/N Thr

Sunset

Sunrise

D/N Dly

If "Time4" of the S-Unit is set to "T0T", this mode is T0T mode.

* If “Time4”is set to T0T mode, “Time1” can not set to D2D 
mode.

8.LVD, LVR, Threshold

7.1 Standard(24H)

Light On

D/N Thr

D/N Thr

Sunset

Sunrise

If “Time1” of “DC 5-Stage” is set to “24H”and 
sent to the controller successfully, the controller ’s 
load will always be open.

8.3 Day/Night Threshold, Day/Night Delay

The controller recognizes day and night based on the solar array 
open circuit voltage. This day/night threshold can be modified 
according to local light conditions and the solar array used.
Day/Night threshold setting range: 3.0~20.0V.

8.1Low Voltage Disconnect(LVD)

!

1.  Day/Night threshold voltage should be set around 

0.22 times of open circuit voltage.                              
2.Day/Night threshold voltage of load disconnect is 1V 
higher than the setting data, means the load will disconnect 
when the solar voltage at 4.0~21.0V.                                     
3.The controller has an automatic day/night threshold 
adjustment function. If the lowest voltage of solar array is 
higher than the setting day/night threshold, the load has no 
output in first night, 24 hours later the controller can 
automatically adjust the day/night threshold to meet the 
requirements of lighting at night.

8.2Low Voltage Reconnect(LVR)

Low voltage reconnect setting range: 9.6~31.0V.

Low Voltage Disconnect 

9.0~30.0V

setting range: 

Sunset

Dusk

Sunrise

Dawn

3.0~20.0V

4.0~21.0V

!

 1.If the controller goes into low voltage disconnect,

 

it 

will restore only when the battery being recharged to the 
recovery voltage.                                                      

2.

"LVR"should be higher than "LVD" at least 0.6V.            

3.SMR-MPPT0875 Li Series:                                                  

Low Voltage Disconnect

 setting range: 9.0~15.0V.            

16

Low voltage reconnect setting range: 9.6~

.0V.

 In the evening, when the solar array open circuit 
voltage reaches the setting day/night threshold, you 
can adjust the day/night delay time to make the load 
turn on a little later.
Day/Night delay time setting range: 0~30min.

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