Thank you for selecting the EPEVER RTU 2G A solar wireless collector. Please read this manual carefully before using the product. Please keep this manual for future reference.
GPRS Transmission Terminal - EPEVER RTU 2G A
1. Important Safety Instructions
- Read the instructions and warnings in the manual carefully before installation.
- The product should be situated away from rain, exposure, dust, vibration, corrosion, and intense electromagnetic environments.
- Please avoid water and other liquids entering the product.
- Never use the product in sites where electrostatic discharge could occur, and avoid placing the antenna close to a metal object.
- DO NOT disassemble or attempt to repair the product.
- Power supply: DC 9~60V or 5V, it can be customized according to customers' requirements.
- Enable GPRS service for the SIM card before installation.
2. Overview
The EPEVER RTU 2G A is a new wireless data transmission terminal based on the GPRS network. With a GSM/GPRS SIM card, connected devices can easily access the EPEVER cloud server to realize remote, wireless, and networked communication. The EPEVER RTU 2G A is suitable for EPEVER solar controllers, inverters, and inverter/chargers.
Features:
- Extensive network coverage and flexible networking.
- Low operating costs (charged by network flow).
- Adopts a non-standard DB9 male terminal.
- Embedded with Modbus RTU protocol.
- Automatic restore after disconnection.
- Supports RS485 communication.
3. Appearance
The device features an antenna port (labeled 1), a hole for viewing indicators (labeled 2), a DB9 male connector (labeled 3), and fixing screws (labeled 4).
DB9 Pin Definition
The pin definition of the terminal (DB9 female) connected to the DB9 male terminal is as follows:
| Item | Terminal | Definition |
|---|---|---|
| 1/2 | NC | Floating |
| 3 | VCC2 | Power2 (12V/200mA) |
| 4 | GND2 | Power GND2 |
| 5 | GND1 | Power GND1 |
| 6 | NC | Floating |
| 7 | RS485-A | RS485-A |
| 8 | RS485-B | RS485-B |
| 9 | VCC1 | Power1 (5V/400mA) |
Indicators
You can observe the indicators' color and status through the hole (labeled 2).
| Name | Color | Status | Instruction |
|---|---|---|---|
| Network indicator (LED2) | Red | On solid | Correct power supply |
| Network indicator (LED2) | Red | Slowly flashing (5s) | Unregistered GPRS network / Registered GPRS network successfully |
Note:
The EPEVER RTU 2G A supports 5~18V DC power. While a larger transient current is needed when the wireless network sends data, it is suggested to adopt a power adapter of DC 5V/500mA or above.4. Parameter Configuration
- Connect the DB9 terminal (labeled 3) to the PC through a DB9 to USB adapter. Note: Connect an external power adapter to the DB9 female terminal to supply the EPEVER RTU 2G A.
- Insert the SIM card and power on the EPEVER RTU 2G A. For detailed SIM card installation, refer to chapter 6, Installation.
- Open the configuration tool on the PC and click the "connect" button to connect the EPEVER RTU 2G A successfully.
- Click the "Read" and "Write" buttons to configure the parameters.
- After configuring, power on the product again to make the modified parameters take effect.
Common Configuration Parameters:
| Parameters | Configuration |
|---|---|
| Server Info | No modifications are recommended. |
| APN | Different countries have different APNs. Please ensure the APN is correct. Products will not connect to the Internet with a fault APN. China APN: CMNET. |
| APN User | Enter it according to the actual settings. |
| APN Key | Enter it according to the actual settings. |
| Baud | Set it according to the connected controller or inverter. |
5. System Connection and Applications
The EPEVER RTU 2G A can be applied to solar street light systems and other applications. Through a GPRS signal, users can easily monitor operating status and modify related parameters on the Cloud platform.
Networking Methods:
According to different applications, the cloud platform provides two networking connection methods: "one-to-one" and "one-to-more." Controllers can be added to the system conveniently and flexibly using these methods. Users can remotely control or real-time monitor the controllers through the cloud platform.
One-To-One Connection
A diagram shows a single EPEVER RTU 2G A connecting to a controller, which then connects to a cloud platform (accessible via Web, APP, Screen, Data Centre).
One-To-More Connection
A diagram shows multiple EPEVER RTU devices (RTU 2G A, RTU 4G A, WIFI 2.4G RJ45 A, TCP 2.4G A, LORA) connecting to controllers, which then connect to a cloud platform.
After adding the device to the Cloud platform successfully, log in to the cloud platform at https://iot.epsolarpv.com to remotely monitor the real-time condition or set parameters.
Note:
For new accounts, devices need to be manually added in the EPEVER cloud before monitoring.6. Installation
Step 1: Install the SIM Card
- Purchase a SIM card and activate the GPRS service.
- Undo the three screws from the EPEVER RTU 2G A. Push the shell upward and take out the circuit board.
- Take out the small SIM card and insert it into the card slot correctly. The SIM card should be inserted in the indicated direction.
After successful installation, reinstall the product shell.
Step 2: Install the silicone pad
Tear off the silicone pad's adhesive and stick the silicone pad to the DB9 terminal of the EPEVER RTU 2G A.
Step 3: Install the antenna
Connect the 4G antenna to the antenna port of the EPEVER RTU 2G A.
Step 4: Connect the controller
Connect the EPEVER RTU 2G A to the controller's COM port through a DB9 adapter.
Caution:
As a wireless terminal, keep the antenna away from the human body as far as possible during the operation process.7. Specifications
| Item | Specifications |
|---|---|
| Network type | GPRS class12 |
| Coding method | CS1-CS4 (Comply with SMG31bis) |
| Frequency | GSM850/EGSM900/DCS1800/PCS1900MHz |
| GPRS transmission rate | 85.6kbps |
| Network protocol | TCP/UDP/FTP/PPP/DNS |
| SIM card voltage | 3V/1.8V |
Antenna connector: 50Ω IPX connector
Serial port level type: RS485
Serial port baud: 9600~115200bps
Power: DC: 9~60VDC or 5VDC
Power consumption: Communication: <200mA/5V; Idle: <40mA/5V
Environment temperature: -40~85°C
Humidity: 0~95% (Non-condensing)
Electromagnetic compatibility: Electrostatic discharge immunity test, level 3; Anti-interference test, level 3
8. Troubleshooting
| Faults | Solutions |
|---|---|
| LED indicator OFF | 1. Check whether the power supply is correct. 2. Check whether the power supply's poles are connected inversely. The EPEVER RTU 2G A is equipped with anti-reverse protection. Reverse connection does not cause fatal damage but affects regular use until the correct connection is restored. |
| Network indicator ON solid (after power on) | After power is on, the network indicator should be solid within 60 seconds. If it still cannot flash after 60 seconds, please check: 1. Check whether the SIM card is inserted correctly. 2. Check whether the GPRS service is activated. |
| Network indicator ON solid again after running for a while | 1. Check whether the server status is normal. 2. Check whether the SIM card is loose or has arrears. |
| Smoke emits with a pungent smell | The actual voltage exceeds the rated voltage, causing internal components to burn out. Contact the supplier immediately and send the unit to the manufacturer. |
| Unregister on the network | 1. Check whether the SIM card is inserted correctly. 2. Check whether the SIM card has activated the GPRS service. 3. Check whether the input power is sufficient. Input power should be 12VDC/0.2A or 5VDC/0.2A. |
| Parameters can't be configured | 1. Check whether the connection to the PC is correct. 2. Check whether the serial port selection is correct. |
9. Dimension
The device dimensions are approximately: Height 101.2 mm, Width 92.3 mm, Depth 39 mm. The DB9 connector area has dimensions of 56 mm x 64 mm with a depth of 26 mm and a protrusion of 3.2 mm.
