Yokogawa OpreX ™ STARDOM FCN-RTU Remote Terminal Unit

Yokogawa OpreX ™  STARDOM FCN-RTU Remote Terminal Unit

Product core positioning and applicable scenarios

1. Core functional positioning

FCN-RTU, as a remote monitoring unit of Yokogawa STARDOM series, integrates four core capabilities of "remote data acquisition, distributed control, multi protocol communication, and low-power operation and maintenance", filling the gap of traditional RTUs in complex control and system compatibility. The specific functions cover:

Data acquisition: Supports analog (4-20mA, RTD/TC temperature), digital (24V DC switch signal), and pulse (flow counting, speed) acquisition, with a measurement accuracy of ± 0.1% FS, and supports channel level fault diagnosis (such as disconnection and short circuit detection);

Remote control: equipped with basic logic control (interlock protection, sequence control) and PID regulation functions, it can independently achieve localized control of remote stations (such as pump station pressure regulation, valve start stop), reducing dependence on the central system;

Narrow bandwidth adaptation: Supports narrow bandwidth communication such as GPRS/4G/LTE, satellite, microwave, etc. The data transmission adopts the "incremental upload+compression protocol" to reduce data consumption (such as compressing a single data upload to less than 1KB);

High reliability design: Key components (CPU, power supply, communication module) support redundant configuration, wide temperature range (-40~+70 ℃), anti-corrosion (G3 coating optional), anti vibration (5g/10-500Hz), suitable for unmanned harsh outdoor environments.

2. Typical Applicable Scenarios

Oil and gas industry: Station monitoring of long-distance oil and gas pipelines (such as oil pumps, valves, pressure transmitters), supporting interconnection with Yokogawa CENTUM VP DCS or SCADA systems to achieve leak detection and remote start stop;

In the field of new energy: monitoring of box transformers and combiner boxes in wind farms/photovoltaic power plants, uploading data on power generation, temperature, voltage, etc. through 4G/LTE, supporting on-site reactive power compensation control;

Water treatment and pipeline network: Pressure pump stations and flow meter monitoring for urban water supply pipelines, or remote aeration tank level regulation for sewage treatment plants, adapted to the low-power operation needs of remote sites;

Industrial distributed sites: cross plant equipment monitoring (such as tank farms in chemical plants and mineral processing equipment in mines), achieving centralized management of multiple sites through fiber optic or wireless bridging.

Key technical specifications and performance parameters

1. Hardware core specifications

Category core parameters (universal model, specific module slightly different)

CPU module model: F3CU01 (single CPU)/F3CU02 (redundant CPU); Processor: ARM Cortex-A9 dual core 1GHz; Memory: 1GB DDR3 RAM+4GB eMMC flash memory

Power module input: 12-48V DC (wide voltage adaptation, supports solar charging+battery backup); Output: 5V DC 3A (system power supply)+24V DC 2A (field device power supply), doubling the total output when configured redundantly

I/O module type analog input (AI): 4-20mA/1-5V (8-channel, isolated), RTD (platinum resistance, 8-channel), TC (thermocouple, 8-channel);

Analog output (AO): 4-20mA (4-channel, isolated);

Digital I/O (DI/DO): 24V DC 32 channel (DI)/16 channel (DO, relay output);

Pulse input: frequency 0-1kHz (4-channel, used for flow counting)

Expansion capability supports connecting remote I/O modules through RS-485 or dedicated expansion bus, with a maximum of 256 I/O points supported by a single RTU; Can cascade 8 expansion units, with a maximum transmission distance of 1km (twisted pair)/5km (fiber optic)

2. Communication and control performance

Communication interface:

Wireless communication: optional GPRS/4G/LTE modules (supporting dual card redundancy), satellite communication modules (such as Inmarsat BGAN);

Wired communication: 1 channel of 10/100Mbps Ethernet (supporting redundancy), 2 channels of RS-485 (Modbus RTU), 1 channel of RS-232 (debugging/local communication);

Protocol support: Modbus RTU/TCP, DNP3.0 (cascade/master), IEC 60870-5-101/104, MQTT (Internet of Things platform docking), supporting Yokogawa proprietary protocol (STARDOM Link).

Control performance: The control cycle is adjustable from 10ms-1s and supports 8 priority tasks; Built in PID control block (supporting automatic/manual switching, disturbance free switching), logic control block (such as AND/OR/NOT, delay), can achieve complex interlocking through programming.

3. Environmental and compliance characteristics

Environmental adaptability: working temperature -40~+70 ℃ (wide temperature), storage temperature -40~+85 ℃; Relative humidity of 5%~95% (non condensing, supporting condensing environment); Anti vibration level 5g (10-500Hz, IEC 60068-2-6), anti impact level 50g (1ms, IEC 60068-2-27);

Protection and certification: The enclosure protection level is IP40 (standard)/IP65 (outdoor type, optional), supporting G3 anti-corrosion coating (EN ISO 12944-5); Compliant with CE, UL 508, ATEX Zone 2 (Ex nA IIC T4), IECEx certification, suitable for hazardous areas and outdoor scenes.