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UT-520,External-powered,Serial Port Hub, Photoelectric Isolation, Asynchronous Half-duplex

Place of Origin: Zhejiang

Company Profile

Location: Shenzhen, Guangdong, China (Mainland)
Business Type: Manufacturer
Main Products: Protocol Converters

Product Detail

Model No.: UT-520

Product Description

  UT-520, External-powered, Serial Port Hub, Photoelectric Isolation, Asynchronous Half-duplex

 

 

Specifications:

Interface features

compatible with RS-485 standard of EIA/TIA

Electric interface

10-bit wiring post connector for both input and output ends of RS-485

Protection Grade

Impose a protection of 600W on each line of  RS-422 and RS-485 interfaces for lightning surge,

+/-15KV ESD protection

Isolation degree

an isolation voltage of 2,500 Vrms, 500VDC non-stop and DC/DC isolation module

Working mode

asynchronous half-duplex

Signal indication

5 indicator lights for Power (PWR), 2 for Send (TXD) and another 2 for Receive (RXD)

Transmission media

twisted-pair cable or shielded cable

Transmission rate

300-115.2K BPS

Dimensions

120mmX72mmX22mm

Working environment

-40 to 85, relative humidity 5% to 95%

Transmission distance

0-5,000meters (115,200bps-9,600bps)

 

Pin assignment of 2-port RS-485 input end

Wiring post

(PIN)

Signal definition

RS-485 half duplex cable

1

T/R+

RS-485(A+)

2

T/R-

RS-485(B-)

3

GND

Grounding cable

4

T/R+

RS-485(A+)

5

T/R-

RS-485(B-)

6

GND

Grounding cable

7

N/C

 

8

N/C

 

9

N/C

 

10

ETH

Ground 

 

Pin assignment of 2-port RS-485 output end

Wiring post

(PIN)

Signal definition

RS-485 half duplex cable

1

T/R+

RS-485(A+)

2

T/R-

RS-485(B-)

3

GND

Grounding cable

4

T/R+

RS-485(A+)

5

T/R-

RS-485(B-)

6

N/C

 

7

N/C

 

8

Eaeth

Ground

9

VCC

Power 9V-36V DC input

10

GND

Ground cable

 

Description:   

 

  Compatible with the Recommended Standard of RS-485, UT-520 photoelectric isolation data repeater can extend the communication distance of RS-485 BUS network and increase the number of RS-485 network equipments. The built-in photoelectric isolator and the DC/DC isolation module can provide an isolation voltage of as high as 2,500Vrms. Also, there are rapid transient voltage suppression protectors for the protection of 2-port RS-485 interfaces at both ends with the 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 2-port RS-485 interface is ensured by the tiny capacitance between the poles. For both input and output, wiring post connectors (PIN) are 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 to half duplex (RS-485).
      A reliable and stable point-to-point

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