EPEVER PWM-VS1024AU AU Series Solar Charge Controller User Manual

: June 4, 2024
: EPEVER

Table of Contents

Overview
Product Features
Wiring
Operation
Protections
Troubleshooting
Disclaimer
Technical Specifications
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EPEVER PWM-VS1024AU AU Series Solar Charge Controller

※ Thank you for selecting ViewStar AU series solar charge controller. Please read this manual carefully before using the product.

Overview

Thank you for selecting the ViewStar AU series common positive solar charge controller. The VS-AU controller is a PWM charge controller with built in LCD display that adopts the most advanced digital technique. The multiple load control modes enable it can be widely used on solar home system, traffic signal, solar street light, solar garden lamp, etc. The features are listed below:

Adopt high quality components of ST,IR and Infineon, make sure product using lifespan
Terminals have UL and VDE certification, the product is more safer and more reliable
Controller can work continuously at full load within the environmen temperature range from -25 to 55 ℃
3-Stage intelligent PWM charging：Bulk, Boost/Equalize, Float
Support 3 charging options: Sealed, Gel, and Flooded
LCD display design, dynamically displaying device’s operating data and working condition
Double USB design, the power supply charge for electronic equipment
With humanized button settings, operation will be more comfortable and convenient
Multiple load control modes
Energy statistics function
Battery temperature compensation function
Extensive Electronic protection

Product Features

①	LCD	⑤	Battery Terminals
②	MENU Button	⑥	Load Terminals
③	RTS Port	⑦	SET Button
④	PV Terminals	⑧	USB Output Ports※

※ USB output ports provide the power supply of 5VDC/2.4A and have the short circuit protection

| Optional Accessory:
Name: Remote Temperature Sensor
Model: RTS300R47K3.81A
Acquisition of battery temperature for undertaking temperature compensation of control parameters, the standard length of the cable is 3m (length can be customized). The RTS300R47K3.81A connects to the port
③ on the controller.
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NOTE: Unplug the RTS, the temperature of battery will be set to a fixed value 25ºC.

Wiring

Connect components to the charge controller in the sequence as shown above and pay much attention to the “+” and “-”. Please don’t insert the fuse or turn on the breaker during the installation. When disconnecting the system, the order will be reserved.
After power on the controller, check the LCD on. Otherwise please refer to chapter 6.Always connect the battery first, in order to allow the controller to recognize the system voltage.
The battery fuse should be installed as close to battery as possible. The suggested distance is within 150mm.
The VS AU series is a positive ground controller. Any positive connection of solar, load or battery can be earth grounded as required.

**| NOTE: Please connect the inverter or other load that it has the large start current to the battery rather than to the controller, if the inverter or other load is necessary.**
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Operation

Button Function

Button	Function
MENU button

Browse interface
Setting parameter

SET button|

Load ON/OFF
Clear error
Enter into Set Mode
Save data

LCD Display

Status Description
Item| Icon| Status
---|---|---
PV array| | Day
| Night
| No charging
| Charging
| PV Voltage, Current ,Power
Battery| | Battery capacity, In Charging
| Battery voltage. current, temperature
| Battery type
Load| | Load ON
| Load OFF
| Load Voltage, Current, Load mode
Browse interface

NOTE：

When no operation, the interface will be automatic cycle, but the follow two interfaces not be display.
Accumulative power zero clearing: Under PV power interface, press SET button andhold on 5s then the value blink, press SET button again to clear the value.
Setting temperature unit: Under battery temperature interface, press SET button and hold on 5s to switch.

Fault Indication
** Status| Icon| Description
---|---|---
Battery over discharged| **| Battery level shows empty, battery frame blink, fault icon blink
Battery over voltage| | Battery level shows full, battery frame blink, fault icon blink
Battery Overheating| | Battery level shows current value, battery frame blink, fault icon blink
Load failure| ****| Load overload ①,Load short circuit

① When load current reaches1.02-1.05 times 1.05-1.25 times, 1.25-1.35 times and 1.35-1.5 times more than nominal value, controller will automatically turn off loads in 50s, 30s,10s and 2s respectively

Load mode setting

Operating Steps:
Under load mode setting interface, press SET button and hold on 5s till the number begin flashing, then press MENU button to set the parameter, press SET button to confirm.

| Timer 1| | Timer 2
---|---|---|---
| Light ON/OFF| | Disabled
| Load will be on for 1 hour since sunset| | Load will be on for 1 hour before sunrise
| Load will be on for 2 hours since sunset| | Load will be on for 2 hours before sunrise
| Load will be on for 3～13 hours since sunset| | Load will be on for 3～13 hours before sunrise
| Load will be on for 14 hours since sunset| | Load will be on for 14 hours before sunrise
| Load will be on for 15 hours since sunset| | Load will be on for 15 hours before sunrise
| Test mode| | Disabled
| Manual mode (Default load ON)| | Disabled

NOTE: Please set Light ON/OFF, Test mode and Manual mode via Timer1. Timer2 will be disabled and display “2 n”.

Battery Type

Operating Steps

Under Battery Voltage interface, press SET button and hold on 5s then enter into the interface of Battery type setting. After choosing the battery type by pressing MENU button, waiting for 5s or pressing SET button again to modify successfully.

Battery Type

NOTE: Please refer to the battery voltage parameters table for the different battery type.

Protections

Protection	Conditions	Status
PV Reverse Polarity	When the battery is correct connecting, the PV can be
reversed.	The controller is not damage
Battery Reverse Polarity	When the PV is not connecting, the battery can be

reversed.
Battery Over Voltage| The battery voltage reaches to the OVD| Stop charging
Battery Over Discharge| The battery voltage reaches to the LVD| Stop discharging
Battery Overheating| Temperature sensor is higher than 65℃| Output is OFF
Temperature sensor is less than 55℃| Output is ON
Controller Overheating| Temperature sensor is higher than 85℃| Output is OFF
Temperature sensor is less than 75℃| Output is ON
Load Short Circuit| Load current ≥2.5 times rated current One short circuit, the output is OFF 5s； Two short circuit, the output is OFF 10s；
Three short circuit, the output is OFF 15s； Four short circuit, the output is OFF 20s；
Five short circuit, the output is OFF 25s； Six short circuit, the output is OFF| Output is OFF
Clear the fault: Restart the controller or wait for one night-day cycle (night time>3 hours).
Load Overload| Load current ≥2.5 times rated current 1.02-1.05 times, 50s,
1.05-1.25 times, 30s
1.25-1.35 times,10s
1.35-1.5 times 2s| Output is OFF
Clear the fault: Restart the controller or wait for one night-day cycle (night time>3 hours).
Damaged RTS| The RTS is short-circuited or damaged| Charging or discharging at 25℃

Troubleshooting

Faults	Possible reasons	Troubleshooting
The LCD is off during daytime when sunshine falls on PV modules properly	P
array disconnection	Confirm that PV wire connections are correct and tight
Wire connection is correct, LCD not display

Battery voltage is lower than 9V
PV voltage is less than battery voltage

|

Please check the voltage of battery. At least 9V voltage to activate the controller
Check the PV input voltage which should be higher than battery’s

Interface blink| Battery over voltage| Check if the battery voltage is higher than OVD point (over voltage disconnect voltage), and disconnect the PV.
Interface blink| Battery over discharged| When the battery voltage is restored to or above LVR point (low voltage reconnect voltage), the load will recover
Interface blink| Battery Overheating| The controller will automatically turn the system off. But while the temperature decline to be below 50 ºC, the controller will resume.
Interface blink| Over load or Short circuit| Please reduce the number of electric equipments or check carefully loads connection.

Disclaimer

This warranty does not apply under the following conditions:

Damage from improper use or use in an unsuitable environment.
PV or load current, voltage or power exceeding the rated value of controller.
The controller is working temperature exceed the limit working environment temperature.
User disassembly or attempted repair the controller without permission.
The controller is damaged due to natural elements such as lighting.
The controller is damaged during transportation and shipment.

Technical Specifications

Item| VS1024AU| VS2024AU| VS3024AU| VS3048AU| VS4524AU| VS4548AU| VS6024AU| VS6048AU
---|---|---|---|---|---|---|---|---
Nominal system voltage| 12/24VDC Auto| 12/24/36/48VDC Auto| 12/24VDC

Auto

| 12/24/36/48VDC

Auto

| 12/24VDC

Auto

| 12/24/36/48VDC

Auto

Battery input voltage range| 9V～32V| 9V～64V| 9V～32V| 9V～64V| 9V～32V| 9V～64V
Rated charge/discharge current| 10A@55℃| 20A@55℃| 30A@55℃| 45A@55℃| 60A@55℃
Max. PV open circuit voltage| 50V| 96V| 50V| 96V| 50V| 96V
Battery type| Sealed(Default) / Gel / Flooded
Equalize Charging Voltage※| Sealed:14.6V/ Gel: No/ Flooded:14.8V
Boost Charging Voltage※| Sealed:14.4V/ Gel:14.2V/ Flooded:14.6V
Float Charging Voltage※| Sealed/Gel/Flooded:13.8V
Low Voltage Reconnect Voltage※| Sealed/Gel/Flooded:12.6V
Low Voltage Disconnect Voltage※| Sealed/Gel/Flooded:11.1V
Self-consumption| ≤9.2mA/12V;≤11.7mA/24V; ≤14.5mA/36V;≤17mA/48V
Temperature compensation coefficient| -3mV/℃/2V（25℃）
Charge circuit voltage drop| ≤0.29V
Discharge circuit voltage drop| ≤0.16V
LCD temperature range| -20℃～+70℃
Working environment temperature| -25℃～+55℃(Product can work continuously at full load)
Relative humidity| ≤95%, N.C.
Enclosure| IP30
Grounding| Common Positive
USB output| 5VDC/2.4A(Total)
Overall dimension| 142x85x41.5mm| 160×94.9×49.3mm| 181×100.9×59.8mm| 194×118.4×63.8mm| 214×128.7×72.2mm
Mounting dimension| 130x60mm| 148x70mm| 172x80mm| 185x90mm| 205x100mm
Mounting hole size| Φ4.5mm| Φ5mm| Φ5mm| Φ5mm
Terminals| 4mm2/12AWG| 10mm2/8AWG| 16mm2/6AWG| 16mm2/6AWG| 25mm2/4AWG
Net weight| 0.22kg| 0.35kg| 0.55kg| 0.58kg| 0.76kg| 0.88kg| 1.02kg| 1.04kg
※ Above the parameters are in 12V system at 25 ℃ , twice in 24Vsystem, triple in 36V system and quadruple in 48V system.