{"product_id":"arm55d-000-br3-yokogawa-32-channel-dry-contact-relay-board","title":"ARM55D-000\/BR3 | Yokogawa | 32-Channel Dry Contact Relay Board","description":"\u003ch3\u003e\n\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eARM55D-000\/BR3\u003c\/strong\u003e is a multi-channel mechanical relay interface board developed by Yokogawa for use within CENTUM VP distributed control systems. It acts as an intermediary between digital I\/O modules and field wiring, enabling safe signal handoff through physical relay isolation.\u003c\/p\u003e\n\u003cp\u003eDesigned for 24 VDC dry contact signals, this relay board enhances system reliability by separating control electronics from field-side disturbances such as noise, voltage transients, or wiring faults. Its construction and terminal layout are optimized for long-term industrial operation where signal integrity and maintainability are critical.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eCore Functions and Design Characteristics\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eARM55D-000\/BR3\u003c\/strong\u003e relay board provides 32 independent relay channels, each using a mechanical contact to ensure true galvanic separation. This architecture is particularly suitable for safety-related or electrically noisy installations where solid-state isolation alone is insufficient.\u003c\/p\u003e\n\u003cp\u003eRelay outputs are routed via robust screw terminals, allowing direct connection to field devices without additional interface components. The board is engineered to integrate directly with Yokogawa digital I\/O modules using compatible signal cable assemblies.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\nModel: \u003cstrong\u003eARM55D-000\/BR3\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\nManufacturer: Yokogawa Electric Corporation\n\u003c\/li\u003e\n\u003cli\u003e\nProduct Type: Mechanical Relay Interface Board\n\u003c\/li\u003e\n\u003cli\u003e\nRelay Channels: 32 dry contact inputs\n\u003c\/li\u003e\n\u003cli\u003e\nRated Control Voltage: 24 VDC\n\u003c\/li\u003e\n\u003cli\u003e\nMaximum Contact Current: 650 mA per channel\n\u003c\/li\u003e\n\u003cli\u003e\nIsolation Method: Mechanical relay (galvanic isolation)\n\u003c\/li\u003e\n\u003cli\u003e\nTerminal Type: M4 screw terminals\n\u003c\/li\u003e\n\u003cli\u003e\nCompatible Signal Cables: AKB331 series\n\u003c\/li\u003e\n\u003cli\u003e\nCompatible I\/O Modules: ADV151, ATD5A digital I\/O modules\n\u003c\/li\u003e\n\u003cli\u003e\nSystem Compatibility: CENTUM VP, Yokogawa FIO architecture\n\u003c\/li\u003e\n\u003cli\u003e\n​Weight: 3.20 lbs\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eSystem Compatibility and Integration\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eARM55D-000\/BR3\u003c\/strong\u003e is designed to operate seamlessly within Yokogawa’s ARM relay board ecosystem. It supports standard digital input and output signal handling when paired with compatible CENTUM VP I\/O modules, ensuring predictable signal behavior and simplified system diagnostics.\u003c\/p\u003e\n\u003cp\u003eIts mechanical relay design makes it suitable for both standard and redundant I\/O configurations, depending on the control system architecture.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eTypical Application Scenarios\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThis relay board is commonly deployed in process control environments requiring reliable discrete signal isolation, including chemical processing units, oil and gas facilities, power generation plants, and continuous manufacturing lines. It is especially useful where field wiring is exposed to electrical interference or where additional protection for controller I\/O is required.\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary role of the ARM55D-000\/BR3?\u003c\/strong\u003e\r\nIt provides electrical isolation and signal switching between Yokogawa digital I\/O modules and external field devices using mechanical relays.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this board suitable for safety-critical signals?\u003c\/strong\u003e\r\nYes, mechanical relay isolation makes it appropriate for applications where physical separation is required, subject to system design and compliance requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used with non-Yokogawa systems?\u003c\/strong\u003e\r\nThe board is mechanically and electrically designed for Yokogawa CENTUM VP platforms; use outside these systems is not recommended without engineering validation.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52761989054749,"sku":"ARM55D-000","price":9.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/5387\/3181\/files\/ARM55D-000-1_1000_a398b962-5f5d-463d-b1c1-6aace919155d.jpg?v=1787221933","url":"https:\/\/www.6gcontrols.com\/products\/arm55d-000-br3-yokogawa-32-channel-dry-contact-relay-board","provider":"6G Controls","version":"1.0","type":"link"}