YOKOGAWA YNT511D fiber optic bus repeater

YOKOGAWA YNT511D fiber optic bus repeater

Product Overview

The YOKOGAWA YNT511D fiber optic bus repeater is a core transmission equipment designed by Yokogawa Electric in Japan specifically for high reliability bus communication in the field of industrial automation. It is mainly used for signal relay and expansion in industrial bus networks. Its core function is to achieve the regeneration, amplification, and forwarding of fiber optic bus signals, effectively extending the bus transmission distance, and possessing excellent electrical isolation and anti-interference capabilities. It can completely isolate electrical interference between bus segments, ensuring the stability and integrity of data transmission in complex industrial environments. This device adopts industrial grade hardware design, adapts to various fiber optic transmission specifications and bus topologies, supports point-to-point, chain type and other networking methods, does not require complex parameter configuration, plug and play, greatly simplifies the expansion and maintenance process of industrial bus networks, and is a key component for bus network extension in harsh industrial scenarios such as petrochemicals, power, metallurgy, etc.

Specification parameters

The YOKOGAWA YNT511D fiber optic bus repeater relies on precise hardware parameter design to meet the demanding operational requirements of industrial scenarios. The core specifications are as follows:

-Basic information: Model YNT511D, manufacturer YOKOGAWA (Yokogawa Electric), product type is fiber optic bus repeater, country of origin is Japan;

-Compatible bus types: compatible with mainstream industrial bus protocols, can seamlessly integrate into the bus architecture of control systems such as Yokogawa Centum CS and Centum VP;

-Fiber interface parameters: Supports multi-mode/single-mode fiber options, common interface types are ST/SC/FC (can be configured as needed); The typical transmission distance of multimode fiber can reach 2km (common multimode fiber specifications such as 50/125 μ m and 62.5/125 μ m), and the typical transmission distance of single-mode fiber can reach 20km (common single-mode fiber specifications such as 8.3/125 μ m and 9/125 μ m);

-Bus rate adaptation: Supports full rate adaptation from 9.6Kbps to 12Mbps, with fully transparent data transmission and nanosecond level low signal delay, without affecting the original communication efficiency of the bus;

-Power parameters: Designed with a wide voltage DC power supply, the typical supply voltage is DC10~36V, supporting dual power redundancy backup (optional), power isolation voltage up to DC1500V, with 1A reverse protection function; Low power consumption, fanless design, relying on natural heat dissipation through metal casing;

-Environmental adaptability: The working temperature range is -10 ° C~60 ° C, and the relative humidity is 0~95% RH (without condensation); Has excellent resistance to electromagnetic interference and meets industrial EMC related standards;

-Physical and protective parameters: Adopting a corrugated high-strength metal shell with a protection level of IP30; The installation method is 35mm industrial standard DIN rail installation; The external dimensions are approximately 120mm x 80mm x 60mm (length x width x height), with a weight of approximately 0.5kg (subject to actual supply);

-Protection function: The electrical interface has 1500W lightning and surge protection for each line, 15KV static protection, and self recovery overcurrent protection function; Built in fiber optic link status monitoring and fault alarm function.

Performance characteristics

The YOKOGAWA YNT511D fiber optic bus repeater integrates the core technology of Yokogawa Electric's industrial communication field and has multiple performance advantages for adapting to harsh industrial scenarios:

-Long distance transmission and signal regeneration: Through fiber optic signal regeneration and amplification technology, effectively breaking through the distance limitations of industrial bus cable transmission, multi-mode fiber can transmit up to 2km and single-mode fiber can transmit up to 20km, ensuring the integrity and stability of signals during long-distance transmission;

-Strong anti-interference and electrical isolation: using optoelectronic isolation technology to completely isolate electrical interference and ground loop interference between different bus segments, avoiding the impact of electromagnetic interference, surges, etc. on bus communication, and adapting to industrial sites with high temperature and strong electromagnetic interference;

-Full rate adaptation and transparent transmission: Supports full range bus rate adaptation from 9.6Kbps to 12Mbps, without the need for manual configuration of rate parameters; Transparent transmission of data, without changing the original bus data format and communication protocol, perfectly compatible with existing bus devices;

-Flexible networking and plug and play: supports various network topologies such as point-to-point and chain type, and can achieve cascading relay of multiple network segments (up to 20 nodes can be cascaded); No need for complex software configuration, plug and play, greatly simplifying network deployment and debugging processes;

-Comprehensive safety protection and status monitoring: equipped with multiple safety protection functions such as lightning protection, surge protection, anti-static, and reverse connection protection, reducing the risk of equipment damage; Equipped with rich LED status indicator lights, real-time display of bus communication status, fiber link status, and power status, built-in relay alarm output, convenient for operation and maintenance personnel to quickly troubleshoot faults;

-Industrial grade stable operation: Adopting high-strength metal casing and fanless low-power design, it has a wide temperature working range and high protection level, and can continuously operate stably in harsh industrial environments such as high dust, vibration, and strong electromagnetic interference. Its MTBF (mean time between failures) performance is excellent.

Working principle

The core working logic of YOKOGAWA YNT511D fiber optic bus repeater is to achieve optoelectronic conversion, regeneration amplification, and forwarding of industrial bus signals, while also completing electrical isolation between network segments to ensure long-distance and anti-interference communication. The specific workflow can be divided into three key stages:

Firstly, the signal reception and conversion process: when the bus signal is transmitted from the front-end network segment to the repeater, if it is an electrical signal, it is converted into an optical signal through the built-in photoelectric conversion module, and if it is an optical signal, it is directly received; The device performs preliminary filtering on the received signal to remove electromagnetic interference noise in industrial environments and extract pure and effective signals.

Secondly, in the signal regeneration and amplification process, the signal processing unit built into the repeater performs regeneration and shaping on the attenuated signal during long-distance transmission, restoring the original waveform and amplitude of the signal. At the same time, the signal strength is increased to a range that meets the transmission standards through an amplification circuit, ensuring that the signal does not experience distortion or loss during subsequent transmission. During this process, the device uses optoelectronic isolation technology to completely electrically isolate the input and output network segments, blocking the conduction of ground loop interference and electrical noise, and ensuring the stability of signal transmission from the root.

Finally, in the signal forwarding stage, the processed signal is forwarded to the next level network segment through a fiber optic interface. Depending on the topology of the network, point-to-point direct transmission or chain type cascaded transmission can be achieved; At the same time, the equipment monitors the real-time status of the fiber optic link, signal transmission status, and power status. If any faults are found (such as fiber breakage, signal abnormalities, power failures, etc.), they will be immediately displayed through LED indicator lights and trigger relay alarm outputs, and promptly feedback to the operation and maintenance personnel. The entire work process does not require manual intervention and is fully automated for signal processing and transmission, ensuring the continuous and stable operation of the bus network.

Precautions

To ensure the stable operation of YOKOGAWA YNT511D fiber optic bus repeater, extend the service life of equipment, and ensure personnel safety, the following matters must be strictly followed during installation, operation, and maintenance:

-Preparation before installation: Before installation and operation, it is necessary to carefully read the product user manual, familiarize oneself with the installation requirements, electrical parameters, and safety specifications of the equipment; After opening the box, it is necessary to check whether the appearance of the equipment is intact, confirm that the accessories inside the packaging (such as installation brackets and instructions) are complete, and if there is any damage or missing, contact the authorized dealer of Yokogawa Electric in a timely manner;

-Environmental adaptation requirements: It is strictly prohibited to install and use equipment in environments that are humid, rainy, exposed to sunlight, or contain flammable and explosive gases or vapors; Avoid installing equipment in locations with high levels of dust, strong vibrations, and strong electromagnetic interference. If unavoidable, protective shielding measures should be taken; Ensure that the working environment temperature and humidity of the equipment are within the specified range, and avoid equipment failure caused by exceeding environmental parameters;

-Fiber optic connection specification: When connecting fiber optic cables, the equipment power should be disconnected first, and a special tool should be used to clean the fiber optic end face to avoid end face contamination that affects transmission quality; The fiber optic connection needs to adopt a cross connection method, that is, the TX end of device A optical port is connected to the RX end of device B optical port, and the RX end of device A optical port is connected to the TX end of device B optical port; After the connection is completed, check whether the fiber optic connector is firmly locked to avoid signal interruption caused by looseness;

-Power connection specifications: A DC10~36V DC power supply that meets the specifications must be used for power supply. If dual power redundancy is configured, it is necessary to ensure that the voltage of the two power supplies is consistent and the polarity is correct; When connecting the power supply, it is necessary to strictly distinguish between the positive and negative poles and prevent reverse connection of the power supply; It is recommended to use an independent power supply unit to ensure stable power supply voltage and avoid damage to equipment caused by voltage fluctuations;

-Installation and heat dissipation: Installed using 35mm standard DIN rails to ensure secure installation and avoid equipment loosening due to vibration during operation; Adequate heat dissipation space should be reserved around the equipment to avoid close contact with other heating devices and ensure smooth natural heat dissipation;

-Fault handling specifications: When the device indicator light displays a fault or the bus communication is abnormal, the fault type (power failure, fiber link failure, bus failure) should be determined by the status of the indicator light first, and then the power should be disconnected for troubleshooting; It is strictly prohibited to disassemble equipment or plug in or unplug fiber optic cables or power supply cables without power off; Troubleshooting should be carried out by operation and maintenance personnel with professional qualifications to avoid expanding the scope of the fault due to misoperation;

-Maintenance and Cleaning: Regularly inspect the appearance of the equipment and clean the surface dust (it is recommended to use a dry cloth to wipe, and the use of abrasives or solvents is strictly prohibited); Check if the fiber optic connectors, power cables, and bus cables are secure. If aging or damage is found, they should be replaced promptly; Unauthorized personnel of Yokogawa Electric are strictly prohibited from dismantling the equipment casing or modifying the internal structure of the equipment.