Photovoltaic inverter interface converter combined with 698 protocol converter to achieve information collection of inverter power generation and consumption

1 Product Overview

The DAQ-GP-485PIA photovoltaic interface adapter (hereinafter referred to as the adapter) is designed by our company for the latest requirements of State Grid Corporation of China in the field of photovoltaic power  generation. The photovoltaic interface adapter is a device that works in conjunction with a photovoltaic protocol converter to achieve inverter power generation and electricity consumption information collection. Support photovoltaic inverter manufacturers such as Jinlang, Guliwat, Goodway, Huawei, Ottai, Sunshine Power, Chint, Sanjing, Shouhang, Magray, Elsevier, and Hewang. Used for switching between single inverter power consumption information collection system and manufacturer cloud platform dual master login. Expand the original communication RS485 port of the inverter into two channels. While ensuring that communication on the manufacturer's cloud platform is not affected on one channel, connect the other RS485 port to the photovoltaic protocol converter to enable both main stations to collect and issue control commands normally.

The switching structure adopts ARM microcontroller MCU control to achieve channel selection. By default, the manufacturer's RS485 communication channel is selected. When communicating with the protocol converter, a switching command is sent to switch to the power grid's RS485 channel. After communication is completed, it is then switched to the manufacturer's communication channel. The adapter should adopt a unified main structure, and achieve communication and control of inverters with different interfaces by replacing the aviation plug wires that match the inverter interface.

2 Service philosophy

Our company solemnly promises:

You are not only purchasing products, but also providing meticulous and thoughtful technical support services!!! (=^ _ ^=)

This product only requires ordinary workers to connect and install it on site! No debugging required!

We provide free remote guidance, remote configuration and debugging services, and send data to the cloud platform specified by the user.

Free Internet of Things solution consulting service!

3 Execution standards

DL/T698.31-2010 "Electric Energy Information Collection and Management System Part 3-1 Technical Specification for Electric Energy Information Collection Terminals - General Requirements"

DL/T698.35-2010 "Electric Energy Information Collection and Management System Part 3-5 Technical Specification for Electric Energy Information Collection Terminals - Special Requirements for Low Voltage Centralized Meter Reading Terminals"

Q/GDW1375.3-2013 "Type Specification for Power User Electricity Information Collection System Part 3: Collector Type Specification"

Q/GDW1374.2-2013 Technical Specification for Power User Electricity Information Collection System Part 2: Technical Specification for Centralized Meter Reading Terminal

Object oriented Communication Protocol for Electricity Information Collection

State Grid Shandong Electric Power Company Technical Specification for Solidified Distributed Photovoltaic Communication Protocol Converter Communication Interface Adapter

Technical specifications for low-voltage power line broadband carrier communication interconnection and intercommunication series

4 Product characteristic parameters

4.1 Structural characteristics

Installation method: guide rail type

Material: PC plastic (shell)

Size: 90mm * 80mm * 74mm

4.2 Electrical characteristics

Power supply method: DC5~24V

Working power consumption: less than 5W

4.3 Work Environment Characteristics

Temperature -25 ℃~70 ℃, extreme temperature -40 ℃~70 ℃

Relative humidity: 10%~100% (without condensation)

4.4 Communication characteristics

Use RS485 for communication. The default baud rate for RS485 interface communication is 9600bps, with no checksum, 8 data bits, and 1 stop bit. It can adapt to the speed of the inverter 485 interface and achieve automatic serial port matching.

5. On site installation

5.1 Installation form

                                                 On site installation diagram

               The converter adopts a rail type installation, which is convenient and reliable to install

5.2 Port Definition

Interface 1: Install the original inverter 4G module (acquisition rod) in this position.

Interface 2: Install the aviation plug to the original safety device (adapter including 1.5 meters of cable) of the corresponding photovoltaic inverter 4G module (acquisition rod).

Interface 3: Connect to the RS485 interface of the corresponding photovoltaic protocol converter (the adapter includes a 1.5 meter cable).

5.3 Installation and wiring precautions

Common issues with RS485 cable wiring:

The RS485 line of the adapter is reversed from the RS485 line of other devices;

Short circuit between adapter RS485 line A and line B; The aviation plug is not installed properly.

Names and content items of harmful substances in 6 products

7 Transportation and storage

This product should not be subjected to severe impact during transportation and unpacking. Inventory and storage should be stored on racks in their original packaging conditions, with a stacking height of no more than 5 layers. The storage area should be clean, with an ambient temperature not exceeding -45 ℃ to+85 ℃ and a relative humidity not exceeding 75%. The air should be free of corrosive gases and mold.

8 Precautions

If one of the following situations occurs, although it is within the warranty period, free repair will not be provided:

1. Product malfunction or damage caused by improper or incorrect use.

2. Product malfunction or damage caused by unauthorized modification or improper repair.

3. Product malfunction or damage caused by human factors.

4. Product malfunction or damage caused by force majeure such as earthquakes, fires, floods, or other factors.

When the product malfunctions, please contact our customer service as soon as possible. Thank you for your cooperation!