{"product_id":"140dai74000-schneider-modicon-quantum-datasheet-technical-manual","title":"140DAI74000 Schneider Modicon Quantum Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eSchneider Electric 140DAI74000 Modicon Quantum Isolated Discrete Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSchneider Electric 140DAI74000\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e140DAI74000\u003c\/strong\u003e Discrete Input Module, operates as a dedicated hardware component for high-voltage alternating current signal sensing within Modicon Quantum automation system platforms. This hardware unit conditions raw alternating current voltages from field binary switches, limit contacts, or electrical interlocks, mapping those electrical states into a single internal 16-bit digital word for the central processing unit. By establishing physical isolation and electrical filtering on each sensing node, this module decodes field electrical potentials without introducing inductive spikes onto the common logic backplane bus.\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\u003e140DAI74000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSchneider Electric (Modicon)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eFrance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.48 kg (1.05 lbs) net \/ 0.80 kg gross packaging weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard single-slot Modicon Quantum module housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5.5 W maximum internal power dissipation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Channels\u003c\/td\u003e\n\u003ctd\u003e16 isolated discrete inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e230 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Current\u003c\/td\u003e\n\u003ctd\u003e2.6 mA per channel at rated voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Register Usage\u003c\/td\u003e\n\u003ctd\u003e1 input word mapped into memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGalvanic Isolation\u003c\/td\u003e\n\u003ctd\u003e1500 V RMS between field channel circuits and internal bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal Status Signaling\u003c\/td\u003e\n\u003ctd\u003e16 x green LED indicators for physical input tracking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e95 percent relative humidity non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Operating Altitude\u003c\/td\u003e\n\u003ctd\u003e5000 m (with appropriate factory thermal derating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL 508, CSA C22.2 No 142, IEC 61131-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003ci\u003eNote on input data discrepancies:\u003c\/i\u003e Standard reference documentation for the 140DAI74000 specifies a configuration of 16 isolated channels operating at 230 V AC, rather than 32 channels at 24 V DC.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and Signal Filtering\u003c\/h3\u003e\n\u003cp\u003eThis discrete input hardware block coordinates with the Quantum backplane to deliver real-time channel state updates without reducing the backplane bus communication velocity. Every 230 V AC channel includes an internal resistor-capacitor (RC) filter network coupled with an optocoupler circuit to eliminate high-frequency contact bounce and line transients. Once the incoming alternating current crosses the designated logical threshold, the optocoupler triggers internal logic gates to update the module 1 input word register. The backplane driver reads this register during the synchronous input scan, passing the status to the controller memory map without forcing the CPU to handle asynchronous interrupt overloads.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the physical and electrical consequences of mixing different AC phases across the input channels?\u003c\/p\u003e\n\u003cp\u003eA: Because the 140DAI74000 features individual channel-to-channel galvanic isolation rated for 1500 V RMS, wiring different electrical phases across adjacent sensing points is permitted. The isolation barriers prevent phase-to-phase short circuits and eliminate common-mode ground distribution issues across the module.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module handle short power interruptions or frequency variations on the 230 V AC sensing lines?\u003c\/p\u003e\n\u003cp\u003eA: The internal RC filter circuit acts as an integration network, requiring the AC wave to remain below the logical threshold for several milliseconds before a state transition is registered. This brief filtering window prevents minor voltage fluctuations or standard line frequency changes from triggering false state changes in the controller software.\u003c\/p\u003e\n\u003cp\u003eQ: Given that the Quantum line is discontinued, how can existing 140DAI74000 loops be migrated to an M580 platform?\u003c\/p\u003e\n\u003cp\u003eA: Schneider Electric recommends deploying Modicon X80 I\/O modules via an Ethernet Drop Adapter (such as a BMxCRA series module) to transition the application to an M580 PAC system. The software automatically maps the legacy Quantum discrete registers into modern structured variables without requiring rewiring of unmanaged field assets.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Power Isolation:\u003c\/strong\u003e Verify that the primary rack power supply module is fully turned off before inserting or extracting the input block to prevent the parallel backplane contacts from arcing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Block Screw Torque:\u003c\/strong\u003e Secure all field conductors into the removable terminal strip block, ensuring each terminal screw is tightened to a torque rating of 0.5 N-m to maintain low contact resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Voltage Separation:\u003c\/strong\u003e Route all 230 V AC field wiring in separate wiring trays away from low-voltage DC signals, communication cables, or analog loops to prevent high-frequency inductive cross-talk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Ventilation:\u003c\/strong\u003e Ensure that the control cabinet layout permits a minimum clearance of 80 mm above and below the Quantum chassis assembly to facilitate proper convection cooling.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Schneider","offers":[{"title":"Default Title","offer_id":43449730400346,"sku":"140DAI74000","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/193_4d45af07-e7dc-4e57-aee6-f2c765b6a203.jpg?v=1780542715","url":"https:\/\/www.spareoil.com\/ar\/products\/140dai74000-schneider-modicon-quantum-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}