Bộ Chuyển Đổi RS-232 Sang RS-485/422 Cách Ly Quang Điện, Chống Sét, Max 1.2Km (UT-217)

Giới thiệu

Compatible with the Recommended Standards of RS-232C,RS-485, UT-217 photoelectric isolation interface converter can convert the single-ended RS-232 signal into balance differenced RS-485 signal. The built-inphotoelectric isolator can provide an isolation voltage of as high as 2500Vrms

 

. Also, there is a rapid transient voltage suppression protector for protection of RS-485 interface with advanced TVS ( TRANSIENT VOLTAGE SUPPRESSOR ) technology adopted. Under normal conditions,the TVS tube is in the state of high resistance. However, when both ends of the TVS tube are hit by a transient high energy, the impedance at both ends can be depressed by the TVS at a very high speed, and after absorbing a high current, the voltage between the two ends is suppressed and kept at a pre-set value, therefore no damage is caused to the electrical components behind by the transient high voltage impact. The protector can effectively restrain lightning or ESD (electro static discharge) with a protection voltage of 600W on each line for lightning surge and surge voltage or transient over voltage possibly caused up by various reasons, and  at the same time, a high-speed transmission of RS-485 interface is ensured by the tiny capacitance between the poles. Through a DB9 female connector RS-232 interface is connected to other interfaces compatible with RS-232C standard, and for RS-485 interfaces RJ-45 and 4PIN connector is to be used for connection. The unique I/O circuit of the internal zero delay auto transceiver contained in the converter controls the data stream direction automatically without any handshaking signal ( for example RTS, DTR etc ). The converter is plug-and-play without any jumper settings needed for mode shift between full duplex half duplex ( RS-485 ). 

Feature

1. Compatible RS-232C and RS-485 standards of EIA/TIA.
2. Automatic data transceiver without external volume control signal (RTS).   
3. Baud rate: 300BPS-115.2KBPS.
4. A maximum connection of 32 pieces of RS-485 or RS-232 interface devices.
5. Communication distance: 1.2 KM (9,600BPS).
6. Power indicator light and double-color data traffic indicator light available for malfunction  indication.
7. Working modes: applicable for both asynchronous half duplex (RS-485)
8. Photoelectric isolation (an isolation voltage as high as 2.5KVrms /500VDC isolation), 600W lightning strike and grounding interference protection for each RS-485 line)
9. Electric interface: DB9 female connectors for connection from RS-232C and RJ-45 and 4-port terminal for RS-485 interfaces.
10. Transmission media: STP
11. Dimensions: 93mm×74mm×22mm.
12. Working environment: -25℃ to 70℃, relative humidity 5% to 95%.
13. Plug-and-play and universally applicable to all the existing communication software and hardware interfaces.
14. Supporting DOS/WIN95/WIN98/WIN2000/NT/XP and Linux, etc.

 

 

Download Datasheet : UT-217

Download Hướng dẫn: UT-217

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