{"product_id":"yokogawa-sdv144-s53-s4-prosafe-rs-digital-input-module","title":"Yokogawa SDV144-S53 S4 ProSafe-RS Digital Input Module","description":"\u003ch2\u003eYokogawa SDV144-S53 S4 Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for high-integrity discrete signal acquisition in ProSafe-RS and CENTUM VP platforms, the \u003cstrong\u003eYokogawa SDV144-S53 S4\u003c\/strong\u003e (\u003cstrong\u003eSDV144\u003c\/strong\u003e Digital Input Module) provides direct physical\/electrical execution. This 16-channel module accepts no-voltage dry contact inputs from emergency shutdown pushbuttons, position limit switches, and process interlocks. Operating on a 24 VDC field voltage architecture, the module converts discrete state changes into system logic signals while maintaining full galvanic isolation between field loops and internal system buses.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSuffix \/ Option Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDesignation\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eTechnical Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSDV144\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eDigital Input Module (16-channel, 24 VDC, module isolation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-S\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eStandard operational specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e5\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnection \/ Protection\u003c\/td\u003e\n\u003ctd\u003eFor pressure clamp terminal block or MIL cable; no explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoating \u0026amp; Temperature\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 conformal coating with extended temperature range (-20 to 70 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS4\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStyle Code\u003c\/td\u003e\n\u003ctd\u003eRevision design style 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\/STB4D-10\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTerminal Block Option\u003c\/td\u003e\n\u003ctd\u003ePressure clamp terminal block with integrated surge absorbers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSDV144-S53 S4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndonesia \/ Japan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.36 kg (Net)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e130.0 mm x 32.8 mm x 107.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e290 mA max at 5 VDC (backplane), 140 mA max at 24 VDC (external field loop)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannel Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 discrete digital inputs (module isolation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Signal Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo-voltage dry contact\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eON State Threshold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eContact resistance \u0026lt;= 1 kohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOFF State Threshold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eContact resistance \u0026gt;= 100 kohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 mA +\/-20% at 24 VDC (0 ohm contact resistance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Input Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Response Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= 40 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDielectric Strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2000 VAC for 1 minute (channel-to-system)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConformal Coating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 class\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eGalvanic Isolation \u0026amp; Field Loop Diagnostics\u003c\/h3\u003e\n\u003cp\u003eThe module features optical galvanic isolation rated for 2000 VAC across 1 minute, preventing high-voltage transients on field wiring from reaching the internal system backplane. Designed for deployment in critical safety instrumented functions (SIF), the input detection circuitry continuously monitors loop integrity using internal diagnostic pulse testing to detect open-circuit field wire breaks and short circuits. Combined with the ISA Standard G3 conformal coating, the hardware maintains long-term component integrity in hydrogen sulfide and chlorine environments, maintaining contact detection accuracy without signal degradation across extended temperature spans.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What contact conditions determine an explicit ON or OFF state for this input module?\u003c\/p\u003e\n\u003cp\u003eA: The module registers an ON condition when field contact resistance is 1 kohm or lower. An OFF condition requires a field loop impedance of 100 kohm or higher at an input current level of 6 mA nominal.\u003c\/p\u003e\n\u003cp\u003eQ: How does the STB4D-10 terminal block enhance module protection?\u003c\/p\u003e\n\u003cp\u003eA: The STB4D-10 terminal block incorporates dedicated hardware surge absorbers across the connection terminals. This diverts field-induced voltage spikes away from the internal optocouplers and limits transient overvoltages to safe operating levels.\u003c\/p\u003e\n\u003cp\u003eQ: Is online replacement supported during normal system operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the unit supports hot-swapping inside the I\/O nest. Technicians must ensure that external 24 VDC field power loop connections remain grounded and secure during the replacement procedure to avoid transient field noise.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the module directly into an available slot inside the IOM nest. Secure the STB4D-10 pressure clamp terminal block using the front retention screws to ensure uninterrupted contact with the backplane connector. Verify that all field contact power wiring originates from an external 24 VDC supply capable of delivering at least 200 mA with a voltage stability within +20% \/ -10%.\u003c\/p\u003e\n\u003cp\u003eStrip signal wires to 6 mm and terminate them securely into the pressure clamp terminals. Route field input cables in separate, grounded cable trays positioned at least 300 mm away from high-voltage AC power lines to avoid inductive noise coupling. Connect all cable shields to the cabinet functional earth busbar using low-impedance clamps, keeping shield pigtails as short as possible to preserve high-frequency noise immunity.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":46226717638755,"sku":"SDV144-S53\/STB4S-10","price":360.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/888_8d08b7e9-65b5-4fa0-89db-1325ca4cedf4.jpg?v=1790060799","url":"https:\/\/www.autocontrolglobal.com\/products\/yokogawa-sdv144-s53-s4-prosafe-rs-digital-input-module","provider":"AutoControl Global","version":"1.0","type":"link"}