PowerTech MP3743 User Manual Download Page 9

9

set to 4 hours by default); c. 

After

 clock 2 

executing,

 the load is always o

n

 u

nti

l PV>10.

5V,

 

so the loop is repeated) 
(8. TO mode: Set the load 

ti

mer 

on/off

 

time;

 the 

setting

 

range

 is 0-24 hours. 

a. for example

,

 the default s

etting:

 

turn

 o

n

 load at 18:00

,

 tu

rn

 o

 load at 6:00. The 

program

 auto

matically

 tur

n

on/off

 the load at set 

tim

e). 

Remark: The load switch mode of items 6-8 is OFF by default. Please turn it on as 
needed, and set the required 

ti

me 

c. 

Press and hold MENU to enter the parameter se

tting

 

interface

:

 

1. Press MENU to switch am

ong

 the 8 

in

terfaces i

n

 

sequence.

 2 Press MENU to 

cancel

 

the data that has 

been

 modi

ed but 

hasn

’t 

been

 saved. 

d. Restore the default se

tti

n

g

s: 

first

 press and hold the MENU 

button,

 then turn on the 

power of the 

battery,

 and the FFFF icon will be displayed on the screen. 

2.

UP 

button

 

description

 

Enter

 the parameter 

setting

 

interface:

 press: UP 

/

 

(time

 plus 1 

/

 

voltage

 plus 0.1V); press 

and

 hold: (

ti

me 

/

 load vol

tage)

 values 

can

 be accumulated. 

Press i

n

 default 

interface

 

aft

er power-

on

: switch 

among

 

(batt

ery 

voltage/current),

 (load 

voltage/current)

 

and

 (PV 

voltage/current

). 

3.

Down bu

tton

 

description

 

Enter

 the parameter 

setting

 

interface

 

and

 press: DOWN 

/

 

(time

 

minus

 1 

/

 

voltage

 

minus

 0.1V); press 

and

 hold: 

(time

 

/

 load 

voltage)

 value 

can

 be reduced 

cumulatively.

 

Press i

n

 default 

interface

 

aft

er power-

on

: Switch 

among

 

batt

ery curre

nt,

 load c

urrent,

 

and

 PV curre

n

t. 

4.

Enter 

button

 

description

 

Press: a. 

In

 the parameter 

setting

 

in

terface: 

enter

 to modify parameters 

/

 c

onfi

rm the 

modification

 

b. 

In

 the 

battery

 

voltage

 

int

erface: load ON

/OFF

V. Wire diameter requirements: 

Battery

 output 

line:

 30A MAX) 6AWG--10AWG; at least 10AWG copper 

wire,

 less tha

n

 2m. 

PV 

input

 

line:

 8AWG--10AWG; professio

n

als 

can

 select the appropriate 

electronic

 li

ne

 

according

 

to the actual output PV 

voltage.

 

 

Summary of Contents for MP3743

Page 1: ...1 12V 24V 30A MPPT Solar Charge Controller for Lithium or SLA Batteries MP3743 User Manual ...

Page 2: ...t picture 4 5 III Description of basic functions 5 6 III Description of LCD screen 7 8 IV Operation of machine buttons and function introduction 8 9 V Wire diameter requirements 9 VI Electrical parameters 10 VII Troubleshooting 11 VIII Specifications 11 ...

Page 3: ...rger 12 24V battery it will damage the internal discharge circuit if the voltage exceeds 33V so do not use batteries over 36V or else it may damage the charger 4 The maximum open circuit voltage of PV is 100V Do not exceed the range during use or else the charger may be damaged 5 Do not touch the heat sink in the process of product operation to avoid hot hands It is recommended to use the product ...

Page 4: ...ter OK button 5 Green LED light off when no charging flashing during charging stay on when fully charged 6 Red LED light off when no error error alarm when the light is long on lithium battery only has 12V gear other gear flashing red light error 7 2 5V 3A USB output 8 LCD screen Remark The operations of panel items 1 4 are explained below 8 6 7 5 4 3 2 1 ...

Page 5: ...l input a The maximum open circuit voltage of PV is 100V b PV integrates anti reverse reverse connection alarm E8 no charging please eliminate the fault c 12V battery PV input voltage range is 16 80V d 24V battery PV input voltage range is 32 80V 2 Battery output function a Identify 12 24Vbattery automatically the maximum charging current is 30A b Anti reverse connection E1 alarm 3 Load output fun...

Page 6: ...t external analog resistance 100K 10 C 3 12V battery charging temperature 20 C 5 C 13 5 0 3 VDC test external analog resistance 39K 30 C 4 24V battery floating charge temperature 0 C 40 C 28 2 0 3 VDC test external analog resistance 430K 20 C 5 24V battery floating charge temperature 0 C 20 C 5 C 27 6 0 3 VDC test external analog resistance 100K 10 C 6 24V battery floating charge temperature 20 C 5 C...

Page 7: ...ntering the setting parameters and turn off when exit D WIFI icon WIFI ON OFF optional default ON F Battery level icon display the corresponding icon according to the battery voltage I Load icon turn on when the load is turned on synchronized with the load switch ON J Connector three up corresponding to PV middle corresponding to battery down corresponding to load K Currently identified battery ty...

Page 8: ...n Switch among ery voltage load voltage PV voltage and me interface in turn b Press and hold MENU to enter the parameter interface Then press to switch among the 8 interfaces in turn 1 type selec on S STD default level L LI A AGM 2 WIFI switch ON OFF default ON 3 Load undervoltage range of 12V b ies 10 11 5V default 10V s range of 24V b ies 20 23V default 20V 4 Load undervoltage recovery range of ...

Page 9: ...d on the screen 2 UP button description Enter the parameter setting interface press UP time plus 1 voltage plus 0 1V press and hold time load voltage values can be accumulated Press in default interface after power on switch among battery voltage current load voltage current and PV voltage current 3 Down button description Enter the parameter setting interface and press DOWN time minus 1 voltage m...

Page 10: ...3 4A Max Standby current Battery input 12V Separate MPPT charger 60 mA MPPT charger WIFI module 160 mA Protective function PV battery input high low voltage protection Yes PV battery reverse connection protection Yes Load overcurrent short circuit protection Yes Temperature protection Yes 90 C Mechanical dimensions Length X width X height mm 238 177 63 Weight 1 5 KG General data Operating temperat...

Page 11: ...00V E7 Over temperature protec stop charging when heat sink temperature 90 C resume when temperature 60 C E8 PV reverse conne on please correct ery over and under voltage range Capacity 12V 24V low voltage pr LCD display E2 8 18V Capacity 12V 24V Over voltage protec on LCD display E5 15 31V Remark Please eliminate the fault according to the error code If the machine s does not respond the error is...

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