EJA110E Yokogawa

EJA110E Yokogawa Power Board

Product  Description：

Yokogawa Power Boards are highly specialized, industrial-grade power supply and distribution assemblies designed primarily for the company’s flagship Distributed Control Systems (DCS), such as the CENTUM series, and high-precision measurement instruments. These boards serve as the foundational energy management layer, converting raw facility power into highly stable, low-noise DC voltages required by sensitive control cards, processor units, and field I/O modules. Engineered for mission-critical industrial environments, they prioritize continuous uptime, advanced diagnostic feedback, and exceptional electrical isolation.

Product Parameters

The technical configuration of a Yokogawa Power Board focuses on strict voltage regulation, isolation capabilities, and heat management:

• Input Voltage Options: Universally designed to accept wide ranges of power inputs, including 100V-120V AC, 220V-240V AC at 50Hz/60Hz, or industrial 24V DC battery backup lines.

• Output Voltage Precision: Delivers highly regulated DC voltage rails, such as 5V DC for logic processing and 24V DC for field loop power, maintaining a ripple and noise threshold below 0.5 percent.

• Insulation Resistance: Features high galvanic isolation, typically rated at 2000V AC or higher for 1 minute between the primary AC input, secondary DC outputs, and the chassis ground.

• Hold-Up Time: Built-in energy storage capability allows the board to maintain full output voltage for at least 20 milliseconds during temporary AC power sags or brownouts.

• Current and Power Rating: Varies by system scale, with individual boards rated from 50W for modular instruments to over 500W for high-density DCS node nests.

• Efficiency and Cooling: Designed for high efficiency, often exceeding 88 percent at full load, utilizing natural convection or optimized airflow paths to eliminate the need for failure-prone onboard fans.

Product Advantages

Yokogawa Power Boards are distinguished in the automation market by their focus on system availability and signal integrity:

• Ultra-High Reliability and MTBF: Built with premium, industrial-grade components that offer an exceptionally high Mean Time Between Failures, ensuring decades of continuous operation without interruption.

• Advanced Noise Filtering: Incorporates sophisticated electromagnetic interference filters that suppress external high-frequency voltage spikes and prevent internal switching noise from corrupting analog control signals.

• True Redundancy Integration: Designed to easily pair with a second power board in a hot-swappable, parallel-redundant configuration, ensuring that if one board fails, the backup takes over instantly without a system reboot.

• Comprehensive Onboard Diagnostics: Equipped with hardware status contacts and digital feedback lines that transmit real-time data regarding voltage health, temperature limits, and degradation alerts to the central control room.

• Environmental Protection: Features premium conformal coating as a standard to protect circuits from conductive dust, moisture, and corrosive gases common in chemical and refining environments.

Product Applications

These power boards are deployed at the core of heavy industries where power failure can result in catastrophic operational losses:

• Petrochemical and Refining: Powering central processing units and safety instrumented systems (SIS) in oil refineries and chemical plants to maintain continuous, safe process loops.

• Power Generation: Supplying reliable electricity to the control infrastructure of thermal, nuclear, and hydroelectric power plants where grid synchronization control must never fail.

• LNG and Offshore Platforms: Serving as the robust power core for monitoring and control equipment on offshore drilling rigs and liquefied natural gas processing facilities.

• Pharmaceutical and Food Production: Ensuring clean and uncorrupted power for batch control systems where a momentary power drop could ruin an entire production run.

• Iron and Steel Mills: Operating reliably inside control cabinets subjected to high ambient temperatures and severe electrical noise from nearby blast furnaces and heavy machinery.

Important Precautions

To preserve the longevity of the hardware and maintain site safety, the following operating guidelines must be strictly enforced:

• Safe Capacitance Discharge: The high-capacity capacitors on the power board retain dangerous levels of electrical energy even after the main power feed is disconnected. Always wait at least 5 minutes and verify with a voltmeter before handling or removing the board.

• Proper Grounding Architecture: The ground terminals of the power board must be connected to a high-quality, dedicated instrument earth ground. Poor grounding can compromise the board's noise filtering capabilities and cause intermittent system errors.

• Load Balancing: In redundant configurations, ensure that both power boards are properly seated and calibrated so they share the load evenly, preventing premature aging of a single unit.

• Enclosure Environment: While the board is designed for industrial use, it must be installed in an environment free of dripping water and exceeding the specified ambient temperature limits. Ensure that the cabinet ventilation slots are never blocked.

• Tightening Torque: When securing power input wires to the terminal block, follow the exact torque specifications. Loose wiring creates high electrical resistance, leading to localized heat generation and potential fire hazards.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

Please make an inquiry for more models：

Yokogawa VI702

Yokogawa EJX-530A

Yokogawa CP451-10

Yokogawa EC401-10

Yokogawa ALE111-S00

Yokogawa AFV10D

Yokogawa UT55A-040-11-00

Yokogawa ADV151

Yokogawa ANB10D

Yokogawa AAI143-S

Yokogawa AAI543-S

Yokogawa ADV551

Yokogawa SAI143-H63

Yokogawa PW301

Yokogawa AAI543-H00

Yokogawa EB401-10

Yokogawa UM-330-00

Yokogawa R/475-HP1EKLUGMT/S

Yokogawa UT55A-132-11-00

Yokogawa EC401-51

Yokogawa NFAI143H

Yokogawa NFDV151

Yokogawa NFPW444-10

Yokogawa NFAP135

Yokogawa NFSB100-S50

Yokogawa NFLR121

Yokogawa CP401

Yokogawa FLXA21-D-P-D-AB-C1-NN-A-N-LA-N-NN/UM

Yokogawa ADV151-P50

Yokogawa YTA610-JA1A2DK/X2/KU2

Yokogawa ADV151-P00

Yokogawa YTA110-EA4DN/KU2

Yokogawa VF701

Yokogawa SNT501

Yokogawa SDV541-S63

Yokogawa SDV144-S63

Yokogawa YS1700

Yokogawa EC401-50

Yokogawa RCCF31

Yokogawa SCP451-11

Yokogawa SCP461-51

Yokogawa SSC60D SCP461-51

Yokogawa 45TIT8055 YTA610

Yokogawa YTA320-FA2DB/KS15/S2

Yokogawa PW482-50

Yokogawa S9129FA

Yokogawa ADV551-P10

Yokogawa YHC5150X

Yokogawa YTA110-EA4DB

Yokogawa PW401-S2

Yokogawa SAI-143-H63

Yokogawa 436103

Yokogawa SAI143-H33

JUSTWELL PTE. LTD. sells new and discontinued products, and purchases such specialty products through independent channels. JUSTWELL PTE. LTD is not an authorized distributor, distributor, or representative of the featured products on this website. All product names/images, trademarks, brands, and logos used on this website are the property of their respective owners. Product descriptions, descriptions, or sales with these name images, trademarks, brands, and logos are for identification purposes only and do not imply any association or authorization with any rights holders.

This article is from the official website of JUSTWELL PTE. LTD. If reprinted, please attach this link: https://justwellltd.com .com

JUSTWELL PTE. LTD

Our main products include DCS control system spare parts, PLC system spare parts, and robot system spare parts. Our advantageous brands include Allen Bradley, Bently Nevada, ABB, HIMA, Reliance, Bender, National Instruments, Emerson Ovation, Honeywell, Siemens, Allen Bradley, ICS Triplex, FOXBORO, Schneider, GE Fanuc, Motorola, HIMA, Prosoft, and other imported industrial components. Our main products serve a wide range of electronic, metallurgical, chemical, and power plants Industries such as steel mills, rubber, cement, machinery and equipment, and construction.