{"product_id":"yokogawa-s9681db-0-centum-digital-i-o-terminal-board","title":"Yokogawa S9681DB-0 CENTUM Digital I\/O Terminal Board","description":"\u003ch2\u003eYokogawa S9681DB-0 Digital I\/O Terminal Board\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa S9681DB-0\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eS9681DB\u003c\/strong\u003e Digital I\/O Terminal Board, operates as a dedicated hardware component for field wiring termination and signal interconnection within CENTUM VP and CS3000 distributed control systems.\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\u003eS9681DB-0\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\u003e0.43 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e130 mm $\\times$ 142.5 mm $\\times$ 32.8 mm\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\u003eApprox. 2 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16 digital inputs (0 to 24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e32 digital outputs (0 to 24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eOpto-coupler isolation for noise immunity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN rail or panel mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation and Loop Protocols\u003c\/h3\u003e\n\u003cp\u003eThe board interfaces directly with field discrete loops while supporting associated I\/O modules that manage 4-20 mA HART loop protocol integrations across the control network. Opto-coupler isolation barriers safeguard internal logic circuitry against severe ground loops and common-mode electrical transients originating from field cabling. Furthermore, integrated cold junction compensation (CJC) blocks handle temperature-dependent analog inputs seamlessly when paired with multi-function I\/O cards.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can terminal blocks on the S9681DB-0 be rewired while active loop power is applied?\u003c\/p\u003e\n\u003cp\u003eA: Field wiring modifications require upstream loop power isolation to prevent accidental short circuits or controller fault trips.\u003c\/p\u003e\n\u003cp\u003eQ: How does the opto-coupler isolation protect the connected I\/O cards?\u003c\/p\u003e\n\u003cp\u003eA: Optical isolation decouples high-voltage field transients physically from the low-voltage control backplane bus.\u003c\/p\u003e\n\u003cp\u003eQ: What precautions should be observed when mounting the board on a DIN rail?\u003c\/p\u003e\n\u003cp\u003eA: Ensure the metallic rail is grounded properly to maintain electromagnetic shielding and surge dissipation integrity across the cabinet assembly.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that all connected field power sources are locked out before servicing terminal block connections.\u003c\/li\u003e\n\u003cli\u003eSecure the board firmly onto a standard DIN rail or panel mounting surface using appropriate locking brackets.\u003c\/li\u003e\n\u003cli\u003eRoute low-level signal cables separately from high-voltage power conduits to minimize electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eInspect all terminal screw torque ratings to ensure secure mechanical contact and low-resistance signal transmission.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":67691585273955,"sku":"S9681DB","price":360.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/912._69acbc6a-d8c2-4261-aa0e-f1c1236e0c7a.jpg?v=1791855850","url":"https:\/\/www.autocontrolglobal.com\/products\/yokogawa-s9681db-0-centum-digital-i-o-terminal-board","provider":"AutoControl Global","version":"1.0","type":"link"}