Isolated RS232 to RS485 Converter

This converter realizes active isolation conversion between RS232 and RS485 and adopts a 2500V isolation voltage DC-DC isolation power supply. Serial port power theft technology is not used, and the communication signal adopts high-speed optocoupler isolation.

The RS232 and RS485 interfaces have 3-level lightning protection, which meets the GB/T17626.5 (IEC61000-4-5) standard for short-circuit current waves of 10/700μs and open-circuit peak output voltage of 6KV with an internal resistance of 40 ohms. The communication distance can reach up to 1800 meters, making it widely used in complex industrial systems.

● RS232-RS485 with self-adaptive baud rate ranging from 300 to 256K.

● The device is powered by a DC-DC power supply with an isolation voltage of 2500V, communication signals are isolated using high-speed optocouplers to prevent serial port power theft and improve device compatibility.

● RS232 and RS485 interfaces are protected by 3-level lightning protection that meets the GB/T17626.5 (IEC61000-4-5) standard, with a short-circuit current wave of 10/700μs and an open-circuit peak output voltage of 6KV and an internal resistance of 40 ohms.

● It has a wide input voltage range (DC5-70V) and can automatically detect the polarity of the DC power source. It also has built-in self-recoverable fuses and supports overload protection and reverse connection protection.

● It is compliant with industrial EMC requirements.

● It has strong anti-lightning capabilities, able to withstand lightning strikes, high voltage induction, and surge protection.

● It can be mounted on a DIN rail or wall.

● Working temperature: -40℃ to +85℃.

● The device has passed 100% burn-in testing.

● Serial Port

Standard:

    EIA/TIA-232 RS-232 (ITU-T V.28)

    EIA/TIA-485 RS-485 (ISO/IEC8284)

Serial interface:

RS-232: DB9 female connector

RS-485: 2/4-wires

Below: SG = Signal Ground

RS-232: TxD(DB9-2), RxD(DB9-3), SG(DB9-5)

Internal Circuit: RTS to CTS, DTR to DSR and DCD

RS-485 2 wires: A (corresponding to TX+), B (corresponding to TX-), SG

● LED Indicator Light

● Working Environment   

Working temperature: -40°C – +85°C

Storage temperature: -40°C – +85°C

Working humidity: 0% – 95% (no condensation)

MTBF: >100,000 hours