{"product_id":"arm15a-000-s1-yokogawa-centum-vp-32-channel-relay-board","title":"ARM15A-000 S1 Yokogawa CENTUM VP 32-Channel Relay Board","description":"\u003ch2\u003eYokogawa ARM15A-000 S1 CENTUM VP Relay Board\u003c\/h2\u003e\n\u003cp\u003eConfigured for dry contact signal isolation and switching in CENTUM VP systems, the \u003cstrong\u003eYokogawa ARM15A-000 S1\u003c\/strong\u003e (\u003cstrong\u003eARM15A-000\u003c\/strong\u003e Relay Board) provides direct physical\/electrical execution. The hardware converts field-side dry contact inputs into isolated digital logic levels across 32 channels, preventing voltage transients and common-mode electrical noise from entering DCS processing modules.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eARM15A-000 S1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e482.6 mm x 132.5 mm x 138 mm (19-inch rack, 3U height)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC, approx. 0.32 A (Internal power supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Capacity\u003c\/td\u003e\n\u003ctd\u003e32 dry contact inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Detection Threshold\u003c\/td\u003e\n\u003ctd\u003eON LE 150 Ohm, OFF GE 200 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Type\u003c\/td\u003e\n\u003ctd\u003eMechanical relays (Galvanic isolation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstand Voltage\u003c\/td\u003e\n\u003ctd\u003e1.5 kV between field terminals and chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Power Supply\u003c\/td\u003e\n\u003ctd\u003eDual 24 VDC redundant inputs, max 0.3 A per line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Modules\u003c\/td\u003e\n\u003ctd\u003eADV151 (32-point DI), ADV161 (64-point DI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Cables\u003c\/td\u003e\n\u003ctd\u003eAKB331, AKB337 cable series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Galvanic Signal Isolation\u003c\/h3\u003e\n\u003cp\u003eThe ARM15A-000 S1 relay board incorporates channel-to-channel isolation and high-level galvanic field-to-system barriers to prevent ground loops across field loop wiring. Designed to operate alongside 4-20 mA HART loop protocol analog cards and discrete I\/O modules, the unit uses mechanical relays to clean dry contact signals before passing them to ADV151 and ADV161 digital input modules via AKB331 interface cables. Dual 24 VDC power feed terminals provide internal line redundancy to maintain uninterrupted channel switching during a power source failure.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the input resistance thresholds for channel state detection on the ARM15A-000 S1?\u003c\/p\u003e\n\u003cp\u003eA: The board detects an ON state when field contact resistance drops to 150 Ohm or lower, and registers an OFF state when resistance equals or exceeds 200 kOhm.\u003c\/p\u003e\n\u003cp\u003eQ: How does the ARM15A-000 S1 connect to CENTUM VP digital input modules?\u003c\/p\u003e\n\u003cp\u003eA: The board interfaces with ADV151 (32-point) or ADV161 (64-point) digital input cards using AKB331 or AKB337 system cables connected to its rear terminal structures.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the ARM15A-000 S1 board directly into a standard 19-inch 3U rack or marshalling cabinet frame. Secure all panel mounting bolts to maintain chassis grounding integrity to the main enclosure earth bar.\u003c\/p\u003e\n\u003cp\u003eWire dry contact field inputs using M4 terminal connections. Torque terminal screws to standard electrical specifications to prevent loose contact faults under cabinet vibration. Connect dual independent 24 VDC power feeds to the designated redundant power input terminals to preserve power supply redundancy. Maintain a minimum separation distance between high-voltage power cables and low-voltage signal cables inside wire ducts to prevent electromagnetic interference.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43831863803994,"sku":"ARM15A-000 S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/4._50edf121-b465-46a5-b910-219b0263bbaf.jpg?v=1786497613","url":"https:\/\/www.spareoil.com\/products\/arm15a-000-s1-yokogawa-centum-vp-32-channel-relay-board","provider":"SpareOil Automation","version":"1.0","type":"link"}