Product Introduction

ADM-2581 is an 8-port RS-485 bus division hub (HUB) designed specifically for industrial automation communication, to solve the networking of RS-485 bus star structure and meet the requirements of RS-485 large systems in complex electromagnetic field environments. Supports a transmission rate of up to 115.2Kbps, with an RS-485 interface using optoelectronic isolation technology and a 600W lightning surge protection circuit that provides 1500V isolation voltage to 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-485 TIA/EIA standards

2. Input interface: RS-485 interface, RS485+，RS485-

4. Output interface: 8-port RS-485 interface (T/R1+, -) to (T/R8+, -)

5. Communication speed: 300BPS-11.5KBPS

6. Working power supply: DC9-48V, DC12V@300MA (MAX) (Can be connected to 24V power supply)

7. Load capacity: Each RS-485 can connect 32 devices

8. Communication distance: 1000 meters (1200BPS)

9. LED indication: power and data direction indication

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

11. Optoelectronic isolation: isolation voltage of 1.5KVrms/500VDC insulation,isolationDC/DC module, RS-485 provides 600W lightning surge protection, 15KV ESD protection

12. Electrical interface: RS-485 (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%