{"product_id":"emerson-ve4002s1t1b2-deltav-discrete-input-module","title":"Emerson VE4002S1T1B2 DeltaV Discrete Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eEmerson VE4002S1T1B2\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eVE4002\u003c\/strong\u003e Discrete Input Module, operates as a dedicated hardware component for monitoring isolated discrete 24 VDC field signals within DeltaV M-series Distributed Control System platforms.\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\u003eVE4002S1T1B2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEmerson (DeltaV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.86 lbs (0.39 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard M-series controller carrier slot footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e12 VDC at 75 mA typical (drawn from LocalBus backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e8 isolated discrete input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Barrier\u003c\/td\u003e\n\u003ctd\u003e1500 VDC optical isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTermination\u003c\/td\u003e\n\u003ctd\u003eSimplex terminal block assembly (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; Instrument Loop Integration\u003c\/h3\u003e\n\u003cp\u003eThe VE4002S1T1B2 is engineered to manage physical discrete state transitions while protecting systemic logic components from destructive field electrical conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-to-Channel Isolation Parameters:\u003c\/strong\u003e Each of the 8 discrete input channels features dedicated optical couplers tested up to 1500 VDC. This galvanic boundary blocks parasitic ground currents and high-energy transients, preventing field-side line disturbances from entering the core processing unit over the backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART and Fieldbus Coexistence:\u003c\/strong\u003e The module design features integrated noise filters that prevent digital contact switching spikes from coupling into adjacent analog carriers. This layout protects sensitive 4-20 mA HART loops and high-speed FOUNDATION Fieldbus segments from electromagnetic crosstalk when mounted on the same backplane carrier.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Does the VE4002S1T1B2 supply power directly to the dry contact field circuits?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e No. The VE4002S1T1B2 is a passive sensing interface. The 24 VDC loop excitation voltage must be supplied by an external power distribution bus or bulk supply routed through the input terminal block.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the procedure for replacing the module under live system conditions?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e The module supports hot-swapping under power. The field wiring remains permanently landed on the pluggable terminal block. To swap, loosen the retaining latch, slide the old card out of the carrier slot, insert the replacement card, and snap the terminal block back into position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What indicators are available to diagnose field-side loop faults?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e The card features front-panel status LEDs that show real-time logic states for each input channel. A dark LED indicates an open contact or lost loop voltage, while a lit LED indicates a completed 24 VDC circuit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Screw Torquing:\u003c\/strong\u003e When securing field wires to the simplex terminal block, strip the insulation back by 6 mm and torque the compression terminal screws to 0.5 Nm to prevent loose connections or micro-arcing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Carrier Mounting:\u003c\/strong\u003e Always verify that the carrier keying positions match the card slot requirements before insertion to prevent pin damage. Push the module until the lock tabs engage securely with the DIN-rail carrier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Continuity:\u003c\/strong\u003e Run all discrete field lines through shielded twisted-pair cabling. Ground the cable shields at a single dedicated instrument earth bar within the cabinet enclosure; do not ground them at the field switch housing.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EMERSON","offers":[{"title":"Default Title","offer_id":48167443235006,"sku":"VE4002S1T1B2","price":650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-10_11-00-25_cb002f49-808e-4617-90f3-d73679c4621d.png?v=1784174496","url":"https:\/\/www.autooiltech.com\/ar\/products\/emerson-ve4002s1t1b2-deltav-discrete-input-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}