INVT GD20-0R4G-S2 User Manual

Goodrive20 inverters
Communication protocol
105
CRC CHK high bit 14H
END T1-T2-T3-T4
The RTU response command is:
START T1-T2-T3-T4
ADDR 01H
CMD 08H
High bit of sub-function code 00H
Low bit of sub-function code 00H
High bit of data content 12H
Low bit of data content ABH
CRC CHK low bit ADH
CRC CHK high bit 14H
END T1-T2-T3-T4
7.3.1.4 Command code: 10H, continuous writing
Command code 10H means that if the master writes data to the inverter, the data number depends on the
“data number” in the command code. The Max. continuous reading number is 16.
For example, write 5000(1388H) to 0004H of the inverter whose slave address is 02H and 50(0032H) to
0005H, the frame structure is as below:
The RTU request command is:
START T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR 02H
CMD 10H
High bit of write data
00H
Low bit of write data
04H
High bit of data number
00H
Low bit of data number
02H
Byte number 04H
High bit of data 0004H 13H
Low bit of data 0004H 88H
High bit of data 0005H 00H
Low bit of data 0005H 32H
Low bit of CRC C5H
High bit of CRC 6EH
END T1-T2-T3-T4 (transmission time of 3.5 bytes)
The RTU response command is:
START T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR 02H

INVT GD20-0R4G-S2 Specifications

General

Model	GD20-0R4G-S2
Power	0.4kW
Frequency Range	0-400Hz
Protection Level	IP20
Operating Temperature	-10°C to +40°C
Storage Temperature	-20°C to +60°C
Input Voltage	Single-phase 220V
Output Voltage	3-phase 220V
Output Voltage Type	AC
Control Method	V/F control, Sensorless vector control
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat, Short circuit
Humidity	5% to 95% (Non-condensing)
Altitude	1000 m

Summary

Safety Precautions

Safety Definitions and Warnings

Defines safety terms like Danger, Warning, Note, and explains warning symbols.

General Safety Guidelines

Outlines essential safety rules for operating and maintaining the inverter.

Installation and Commissioning Safety

Covers safety procedures during delivery, installation, and initial startup.

Maintenance and Scrapping Safety

Details safety measures for component replacement and end-of-life disposal.

Product Overview

Quick Start-up Guide

Steps for unpacking, application confirmation, and environmental checks.

Installation Guidelines

Mechanical Installation Environment

Specifies requirements for installation site, temperature, humidity, and altitude.

Installation Methods

Standard Wiring Procedures

Details main circuit and control circuit wiring diagrams and terminal connections.

Layout Protection

Keypad Operation Procedure

Keypad Introduction and Display

Keypad Operations and Parameter Modification

Details how to navigate menus, modify parameters, and set passwords.

Function Parameters

Basic Function Group (P00)

Covers fundamental parameters like speed control, run command, and frequency settings.

Start-up and Stop Control (P01)

Parameters related to motor starting, stopping, DC braking, and acceleration/deceleration.

Motor Parameters (P02)

Vector Control Parameters (P03)

Input Terminals Configuration (P05)

Settings for digital and analog input terminals, pulse inputs, and virtual terminals.

Output Terminals Configuration (P06)

PID Control Parameters (P09)

Simple PLC and Multi-step Speed Control (P10)

Protective Parameters (P11)

Safety and protection settings like phase loss, overvoltage, current limits, and overload alarms.

Fault Tracking

Routine Maintenance Intervals

Fault Solution Guide

Provides troubleshooting steps, fault codes, possible causes, and solutions.

Communication Protocol

Modbus Protocol Overview

RS485 Communication

Details the 2-wire RS485 interface, wiring, and transmission characteristics.

RTU Communication Frame Format

ASCII Communication Frame Format

Command Code and Data Illustration

Explains RTU and ASCII command codes (03H, 06H, 08H, 10H) and data structures.

Example of Writing and Reading

Appendix C Peripheral Options and Parts

Braking Components