PowerTech MP3745 - Basic Functions Description; PV Input and Voltage Specifications; Battery Charging Functions; Load Output and Protection

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(Fig.2)
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9.Externaltemperatureprobe
10.RJ45port,connectedtotheremotecontrolboardthroughthenetworkcableand
synchronizedwiththeLCDscreen(thisportisreservedandtheremotecontrolboardisoptional)
11.PV+(connectedtothepositiveelectrodeofthesolarpanel)
12.PV‐(connected
tothenegativeelectrodeofthesolarpanel)
13.B+(connectedtothepositiveelectrodeofthebattery)
14.B‐(connectedtothenegativeelectrodeofthebattery)
15.L+(connectedtothepositiveelectrodeoftheload)
16.L‐(connectedtothenegativeelectrodeoftheload)
III.Descriptionofbasicfunctions
1. PV(solarpanelinput):
a. ThemaximumopencircuitvoltageofPVis135V.
b. PVintegratesanti‐reverse(reverseconnectionalarmE8,nocharging,pleaseeliminate
thefault).
c. 12Vbattery,PVinputvoltagerangeis16‐108V;24Vbattery,PVinputvoltagerangeis
32‐108V
d. 36Vbattery,PVinputvoltage
rangeis48‐108V;48Vbattery,PVinputvoltagerangeis
64‐108V.
2. Batteryoutputfunction
a. Identify12//24/36/48Vbatteryautomatically;themaximumchargingcurrent
is:12/24V/50A,36V/35A,48V/25A.
b. Anti‐reverseconnection(E1alarm).
3. Loadoutputfunction(defaultOFF).
a. Ratedmaximumoutputcurrent50A(12/24/36/48V).
b. Overcurrentprotection>55A.
c. Shortcircuitprotection(E4alarm;pleaseeliminatethefault).
d. Loadoutputover/undervoltageprotection,recoveryvoltage;refertothesetvoltage.
4. Over‐temperatureprotection
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