Product Introduction

ADM-2721 is a photoelectric isolation converter designed for industrial automation communication, which solves the problem of converting RS-232 interface signals into RS-485/422 signals. It supports a transmission rate of up to 115.2Kbps and uses photoelectric isolation technology on the RS-485 interface. It is built-inThree terminal full isolation, RS-232, RS-485/422 and power supply are isolated from each other,The 600W lightning surge protection circuit provides an isolation voltage of 1500V, which can effectively suppress lightning and ESD protection.The discrimination circuit used in the RS-485 working mode can automatically sense the direction of data flow and automatically switch to enable the control circuit, easily solving the problem of RS-485 transceiver conversion delay. The RS-485 interface has a transmission distance greater than 1000 meters and stable performance. Widely used in highway toll collection systems, road monitoring systems, and power collection systems, it is a high-performance and cost-effective data interface conversion product.

performance parameters

1. Compatible with RS-232, RS-485 TIA/EIA standards

2. Automatic data transmission and reception: RS-232 three wire (TXD, RXD, GND) communication

3. Input interface: RS-232 interface (industrial terminal block), delivery 3PIN line conversionDB9 headserial cable

4. Output interfaces: RS-485/422, RS-485 (T/R+, T/R -), RS-422 (T/R+, T/R -, RXD+, RXD -)

5. Communication speed: 300BPS-11.5KBPS

6. Working power supply: DC9-48V, DC12V@150MA (MAX) (Can be connected to 24V power supply)

7. Load capacity: Each RS485 can connect 256 devices

8. Communication distance: 1000 meters (1200BPS)

9. LED indication: power and data direction indication

10. Working mode: Asynchronous half duplex (RS-485), Asynchronous full duplex (RS-422)

11. Optoelectronic isolation: Three terminal full isolation, RS-232, RS-485/422 and power supply are isolated from each other, with an isolation voltage of 1.5KVrms/500VDC insulation,RS-485/422 provides 600W lightning surge protection and 15KV ESD protection

12. Electrical interfaces: RS-232 (industrial terminal block), RS-485/422 (industrial terminal block), power supply (industrial terminal block)

13. Transmission medium: twisted pair or shielded wire

14. Installation method: 35mm DIN rail installation

15. Structural dimensions: 103x72x27 (mm),Length x Width x Height (in millimeters)

16. Operating environment: -20 ℃ to 75 ℃, relative humidity of 5% to 95%