This document describes the features and characteristics of the AW-RP20-3P product, including support for RS232 and RS485 interfaces, and operating voltage of 9~18V.
The AW-RP20-3P is an active, optically isolated, lightning‑proof RS232/RS485 signal converter. It electrically isolates the computer’s RS232 serial port from RS485 bus devices, allowing high‑speed data transfer while protecting the computer from bus interference and surge voltages.
The manual details installation steps, wiring diagrams, power requirements, and technical parameters such as transmission speed, isolation voltage, operating temperature, and dimensions, enabling users to set up the converter safely and efficiently. This manual is written in Chinese.
| Power supply voltage | 9 V ~ 18 V DC |
|---|---|
| Maximum power current | 90 mA |
| RS‑232 interface | DB9 connector |
| RS‑485 channels | 3 independent channels |
| Transmission speed | 300 ~ 115.2 kbps |
| Maximum transmission distance per channel | 1200 m (no repeater) |
| Isolation voltage | 3500 VRMS / 500 VDC continuous |
| Operating temperature | -40 °C ~ 50 °C |
| Dimensions | 86 mm × 59 mm × 20 mm |
Each RS‑485 channel can transmit up to 1200 m without a repeater.
It operates from a 9 V to 18 V DC supply and draws up to 90 mA.
The converter provides three fully isolated RS‑485 channels.
The isolation voltage is rated at 3500 VRMS and 500 VDC continuous.