YOKOGAWA AIP578 optical link transceiver

YOKOGAWA AIP578 optical link transceiver

Product Overview

The YOKOGAWA AIP578 optical link transceiver is a core transmission device designed by Yokogawa Electric in Japan specifically for high reliability optical communication scenarios in the field of industrial automation. Its core function is to achieve bidirectional conversion and long-distance transmission of electrical and optical signals in industrial control systems, providing stable optical link support for the V net/IP network architecture of Yokogawa CENTUM CS/VP and other distributed control systems (DCS). This device adopts an industrial grade high stability design, adapts to multi-mode fiber optic transmission media, and has excellent anti electromagnetic interference capability and link monitoring function. It can effectively break through the distance limitations and interference problems of traditional electrical signal transmission, and is widely used in communication connections between dispersed equipment and central control systems in industrial sites. Its modular structure design balances installation convenience and maintenance flexibility, supporting seamless adaptation with Yokogawa AIP series control modules, YNT series repeaters and other equipment. Through standardized interfaces and simple parameter configurations, it can quickly integrate into existing systems and is a key communication component to ensure data transmission integrity and continuity in complex industrial environments.

Specification parameters

The YOKOGAWA AIP578 optical link transceiver matches the stringent requirements of industrial optical communication with precise technical parameters, and all core parameters have been verified in industrial grade environments. The specific details are as follows:

-Basic information: The model is AIP578, the manufacturer is YOKOGAWA (Yokogawa Electric), the product type is industrial grade optical link transceiver, the country of origin is Japan, the core adaptation system is Yokogawa CENTUM CS/VP distributed control system, and the adaptation network is V net/IP network;

-Optical parameters: compatible with multimode fiber (MMF), fiber interface type is SC (square connector, plug-in design); The typical transmission wavelength is 850nm (short wavelength), the emission optical power range is -18~-11dBm, the reception sensitivity is ≤ -27dBm (error rate ≤ 1 × 10 ⁻¹ ²), and the maximum transmission distance can reach 2km (based on 50/125 μ m multimode fiber);

-Electrical interface parameters: The electrical signal interface is an RJ45 Ethernet interface, supporting the 100Base TX Ethernet standard; The data transmission rate is 100Mbps (full duplex mode), supporting automatic negotiation function, which can automatically match the link rate and duplex mode; Equipped with MDI/MDI-X automatic crossover function, no need to manually switch jumper wires;

-Power parameters: The power supply voltage is DC 24V ± 10%, and the typical power consumption is ≤ 3W. It has reverse connection protection function to prevent equipment damage caused by reverse connection of the positive and negative poles of the power supply;

-Environmental adaptability parameters: operating temperature range of 0 ° C~50 ° C, storage temperature range of -20 ° C~70 ° C; relative humidity adaptability range of 0~95% RH (non condensing); Can withstand vibration intensity of 10~55Hz, 0.3mm amplitude (sine wave, X/Y/Z direction, 30 minutes each), and impact intensity of 10G (11ms, half sine wave, X/Y/Z direction, 3 times each);

-Physical and installation parameters: Adopting a compact modular design, the external dimensions (length x width x height) are approximately 80mm x 120mm x 40mm (excluding installation accessories), with a weight of approximately 0.3kg; the installation method is 35mm industrial standard DIN rail installation, suitable for dense layout inside the control cabinet;

-Safety and electromagnetic compatibility parameters: comply with international safety standards such as IEC 61010-1 and UL 61010-1; Electromagnetic radiation (EMI) meets the EN 55022 Class A standard, and electromagnetic immunity (EMS) meets the EN 55024 standard. It has good electromagnetic shielding performance and can resist electromagnetic interference generated by industrial field frequency converters, motors, and other equipment.

Performance characteristics

The YOKOGAWA AIP578 optical link transceiver integrates the core technology of Yokogawa Electric's industrial communication field, and has multiple core performance advantages to meet the needs of industrial optical transmission scenarios, comprehensively ensuring the stability and reliability of optical link communication

-High stability optical signal transmission: Using high-quality optical transmission and reception components, combined with an 850nm short wavelength multi-mode transmission scheme, it has stable transmission optical power and excellent reception sensitivity, and can achieve error free data transmission within a range of 2km, effectively breaking through the distance limitation of traditional electrical signal transmission (usually 100Base TX electrical signal transmission distance ≤ 100m);

-Strong anti electromagnetic interference: Through photoelectric isolation and full metal shell shielding design, it completely isolates electromagnetic interference, ground environment interference and other issues in industrial sites, avoiding data loss and errors caused by interference during electrical signal transmission, especially suitable for industrial scenarios with high temperature and strong electromagnetic interference (such as metallurgy, power, petrochemicals, etc.);

-Convenient link adaptation and plug and play: Supports 100Mbps full duplex transmission, with automatic negotiation and MDI/MDI-X automatic crossover functions, without the need to manually configure speed and duplex mode, nor to distinguish between crossover and straight through lines. Once connected, the link adaptation can be automatically completed, greatly simplifying the installation and debugging process;

-Complete link monitoring and alarm function: Built in optical power monitoring and link status detection circuit, which can intuitively feedback the device's working status through the LED status indicator lights on the front of the device (power light, electrical port chain street light, optical port sending light, optical port receiving light, alarm light); When faults such as abnormal optical power and link interruption occur, the alarm light will light up in a timely manner, making it easier for operation and maintenance personnel to quickly locate the fault point;

-Industrial grade reliable operation: using industrial grade electronic components and rigorous production processes, it has a wide temperature working range and good anti vibration and anti impact performance. It can operate continuously and stably in industrial environments with high dust and humidity fluctuations, with an average time between failures (MTBF) of over 100000 hours;

-Flexible system adaptation and expansion: Modular design can seamlessly adapt to various control modules and repeaters of Yokogawa CENTUM CS/VP system, supporting cascading expansion of transmission distance for multiple devices (requiring fiber optic repeaters); The compact size and DIN rail installation method can effectively save control cabinet space and meet the dense layout requirements of industrial sites.

Working principle

The core working principle of YOKOGAWA AIP578 optical link transceiver is to achieve bidirectional conversion between industrial Ethernet electrical signals and optical signals, and complete long-distance and anti-interference data transmission through optical media. Its workflow mainly includes four key links: electrical optical conversion, optical signal transmission, optical electrical conversion, and link monitoring. Each link works together to ensure the integrity and stability of data transmission:

Step 1: Electro optical conversion (sender). When the electrical signal (100Base TX Ethernet signal) from the central control system or field equipment is transmitted to the AIP578 transceiver through the RJ45 interface, it first passes through the internal signal filtering circuit to filter out electromagnetic interference noise in the electrical signal; Subsequently, the filtered electrical signal enters the light emission driving circuit, which drives the built-in LED light emission component to work, converting the high and low levels of the electrical signal into corresponding optical signals (850nm wavelength optical pulses), and outputting them to the multimode fiber link through the SC fiber interface.

Second step: Optical signal transmission. The optical signal is transmitted over long distances through a multi-mode fiber optic link. The AIP578 transceiver's optical transmission power and reception sensitivity parameters have been optimized to ensure that the optical signal can be accurately recognized by the receiving end even after attenuation within a range of 2km. At the same time, the transmission characteristics of multi-mode fiber optic can adapt to the complex wiring requirements of industrial sites.

The third stage: photoelectric conversion (receiving end). The optical signal transmitted through the remote fiber optic link enters the optical receiving component of the AIP578 transceiver through the SC interface, and the optical receiving component converts the optical signal into a weak electrical signal; Subsequently, the weak electrical signal undergoes signal enhancement through an internal amplification circuit, and is then restored to a standard Ethernet electrical signal through a shaping circuit. Finally, it is transmitted to the corresponding control equipment or central control system through an RJ45 interface, completing bidirectional data transmission.

Section 4: Link Monitoring and Protection. Throughout the entire working process, the built-in link monitoring circuit of the transceiver monitors key parameters such as power status, electrical port link connection status, optical transmission power, and optical reception power in real-time. When detecting situations such as light power below the threshold (receiving sensitivity), link interruption, power abnormality, etc., the monitoring circuit immediately triggers an alarm mechanism, lights up the alarm LED indicator, and can also provide fault information to the upper system through the reserved alarm interface (supported by some models); In addition, the reverse power protection circuit can cut off the circuit when the positive and negative poles of the power supply are reversed, avoiding damage to internal components of the equipment.