I、 Product Overview
YT-602 is an RS-485 repeater, bus extension, and split hub (HUB) designed specifically to meet the requirements of RS-485 large systems in complex electromagnetic field environments. This product supports a transmission rate of up to 115.2KBPS. In order to ensure the safety and reliability of data communication, the RS-485 interface adopts photoelectric isolation technology to prevent lightning surges from being introduced into the converter and equipment. The built-in photoelectric isolator and 600W surge protection circuit can provide an isolation voltage of 2500V, effectively suppressing lightning and ESD, and effectively preventing lightning strikes and common ground interference, The power supply adopts an external switch power supply, which is safe and reliable, and is very suitable for outdoor engineering applications. In the RS-485 working mode, the discrimination circuit used can automatically sense the direction of the data flow, and automatically switch the enabling control circuit, easily solving the problem of RS-485 transmission and conversion delay. The RS-485 interface has a transmission distance greater than 1200 meters and stable performance. Widely used in highway toll collection systems, road monitoring systems, and power acquisition systems, it is a high-performance and cost-effective data interface conversion product.
YT-602 RS-485HUB provides star shaped RS-485 bus connection and extension. Each port has short-circuit and open circuit protection. Optoelectronic isolation of 2500V allows users to easily improve the RS-485 bus structure, divide network segments, and improve communication reliability. When lightning strikes or equipment malfunctions occur, the problematic network segment will be isolated to ensure the normal operation of other network segments. This performance greatly improves the reliability of existing RS-485 networks and effectively shortens network maintenance time. Reasonable utilization of 602RS-485HUB can help you design a unique and highly reliable RS-485 system.
II、 Performance parameters
1. Interface characteristics: The interface is compatible with EIA/TIA RS-232C and RS-485 standards
2. Electrical interface: RS-232C interface is a ten position terminal, RS-485 interface is a ten position terminal
3. Transmission medium: twisted pair or shielded wire
4. Working mode: asynchronous half duplex
5. Working power supply: 9-30V DC/300MA
6. Signal indication: Five signal indicator lights: power supply (PWR), transmission (TD), reception (RD), fault (E1-E2)
7. Isolation degree: Isolation voltage 2500VRMS500VDC continuous DC/DC module
8. Transmission rate: 115.2K-300BPS9, protection level: RS-232 interface ± 15KVESD protection RS-485 interface 600W lightning surge protection per line
10. Transmission distance: 0-5 kilometers (115.2K-300BPS)
11. Size: 102MM * 72MM * 26MM
12. Operating environment: -40 ℃ to 85 ℃, relative humidity of 5% to 95%
III、 Product List
1. One YT-602 two-port RS-485 repeater and hub;
2. One DC12V standard power supply;
3. One RS-232 wiring terminal;
4. One power adapter;
5. One user manual.
IV、 Warning and protection of RS-485 port failure
RS-485 port fault warning and protection is an effective method to solve the problem of connecting multiple RS-485 devices and enhancing their reliability. YT-602 has two lower computer ports, and each port has short-circuit protection function and can operate in shutdown mode. When any RS-485 port is short circuited, it will only affect the RS-485 bus system where it is located and will not affect the normal operation of the RS-485 system connected to other interfaces. Users can quickly determine the faulty port and other connected faulty devices based on the fault warning indicator light.
V、 Power supply, grounding, and lightning protection
The YT-602 converter can use a DC power supply device for power supply, with a supply voltage of DC9V-30V and a minimum current of 200mA. The randomly equipped power supply is a 12 volt DC power supply, and the red line of the power adapter is positive, while the white line is negative. Also, pay special attention not to reverse connect the power ground and signal ground. The ground at the output end cannot be connected to the ground at the input end.
All RS-485 interfaces of YT-602 have 600W lightning protection, which can effectively suppress lightning and ESD. In theory, users should be reliably grounded to ensure communication safety during use! However, in practical applications, it is difficult to achieve zero resistance (low resistance) grounding, and instead, grounding is prone to lightning strikes. So it is recommended that users do not connect to ground in actual use unless there is significant interference and normal communication cannot be achieved without grounding. If grounded, it must also be a single point grounding.
Tel：0755-84664023、84660949 Fax：0755-84660949-816
