{"product_id":"honeywell-2mli-d28a-64-point-digital-input-module","title":"Honeywell 2MLI-D28A 64-Point Digital Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell 2MLI-D28A\u003c\/strong\u003e is a \u003cstrong\u003ehigh-density 64-point digital input module\u003c\/strong\u003e built for the \u003cstrong\u003eMasterLogic-200 (ML200)\u003c\/strong\u003e PLC system. Supporting both \u003cstrong\u003esink and source-type DC 24 V inputs\u003c\/strong\u003e, this module delivers exceptional I\/O density for large-scale automation projects. With \u003cstrong\u003ephoto-coupler isolation\u003c\/strong\u003e, individual LED status indicators, and a wide operating temperature range, the 2MLI-D28A is engineered for demanding applications in production line control, safety interlocks, and facility monitoring.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e64 high-density digital input channels\u003c\/strong\u003e — maximum I\/O density per module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSink\/Source configurable\u003c\/strong\u003e DC 24 V inputs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfigurable response time:\u003c\/strong\u003e 1 ms to 100 ms (default 3 ms)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhoto-coupler isolation\u003c\/strong\u003e — AC 560 V rms \/ 3 cycles\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndividual LED indicators\u003c\/strong\u003e for all 64 channels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual 40-pin connectors\u003c\/strong\u003e for organized high-density wiring\u003c\/li\u003e\n  \u003cli\u003eWide temperature range: \u003cstrong\u003e−20°C to +60°C\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eUltra-compact — \u003cstrong\u003e150 g\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 2MLI-D28A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Digital Input Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e MasterLogic-200\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Channels:\u003c\/strong\u003e 64 points\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Type:\u003c\/strong\u003e Sink \/ Source (DC 24 V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Input Voltage:\u003c\/strong\u003e DC 24 V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage Range:\u003c\/strong\u003e DC 20.4 V – 28.8 V (ripple \u0026lt; 5%)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Input Current:\u003c\/strong\u003e Approx. 4 mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Resistance:\u003c\/strong\u003e Approx. 5.6 kΩ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOn Voltage \/ Current:\u003c\/strong\u003e ≥ DC 19 V \/ ≥ 3 mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOff Voltage \/ Current:\u003c\/strong\u003e ≤ DC 11 V \/ ≤ 1.7 mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResponse Time:\u003c\/strong\u003e Configurable 1–100 ms; default 3 ms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIsolation Method:\u003c\/strong\u003e Photo-coupler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIsolation Voltage:\u003c\/strong\u003e AC 560 V rms \/ 3 cycles\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIsolation Resistance:\u003c\/strong\u003e ≥ 10 MΩ\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommon Grouping:\u003c\/strong\u003e 32 points per COM (2 COM groups)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Consumption:\u003c\/strong\u003e Approx. 60 mA\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eStatus Indicators:\u003c\/strong\u003e LED for each input channel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Connection:\u003c\/strong\u003e 40-pin connectors × 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 kg\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e −20°C to +60°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e −40°C to +85°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 5% to 95% RH (non-condensing)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLarge-scale production line monitoring and control\u003c\/li\u003e\n  \u003cli\u003eSafety interlock systems and emergency stop circuits\u003c\/li\u003e\n  \u003cli\u003eFacility-wide status monitoring and alarm inputs\u003c\/li\u003e\n  \u003cli\u003eConveyor and material handling system control\u003c\/li\u003e\n  \u003cli\u003eHigh-density packaging and assembly automation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many inputs does the 2MLI-D28A provide?\u003c\/strong\u003e\u003cbr\u003eA: It provides \u003cstrong\u003e64 digital input points\u003c\/strong\u003e — the highest density in the MasterLogic-200 digital input lineup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How are the commons organized?\u003c\/strong\u003e\u003cbr\u003eA: The 64 points are grouped into \u003cstrong\u003etwo commons of 32 points each\u003c\/strong\u003e, allowing flexible wiring for different sensor groups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What connectors are used for field wiring?\u003c\/strong\u003e\u003cbr\u003eA: The module uses \u003cstrong\u003etwo 40-pin connectors\u003c\/strong\u003e. Pre-assembled breakout cables to terminal blocks are recommended for clean cabinet wiring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I mix sink and source sensors on the same module?\u003c\/strong\u003e\u003cbr\u003eA: \u003cstrong\u003eYes.\u003c\/strong\u003e Each 32-point COM group can be wired independently as sink or source, provided the external power connections are configured correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the module suitable for outdoor or cold environments?\u003c\/strong\u003e\u003cbr\u003eA: With an operating range of \u003cstrong\u003e−20°C to +60°C\u003c\/strong\u003e, it handles colder environments than standard 0–55°C modules. For extreme cold, verify additional enclosure heating.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Isolation:\u003c\/strong\u003e Ensure the MasterLogic-200 rack is completely powered down before installing or removing the module.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlot Placement:\u003c\/strong\u003e Insert the 2MLI-D28A into any available I\/O slot. Press firmly until the module locks into the backplane connector.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eConnector Attachment:\u003c\/strong\u003e Connect the two 40-pin connectors to the module front. Label cables clearly (e.g., \"COM1 — Inputs 0–31\" and \"COM2 — Inputs 32–63\").\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eField Wiring:\u003c\/strong\u003e Use breakout cables to route signals to terminal blocks. For each 32-point group, wire the COM terminal according to your sensor type (sink = 0 V, source = +24 V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResponse Time Configuration:\u003c\/strong\u003e In SoftMaster, set the input filter per channel or globally. Use 1 ms for high-speed applications and 10–100 ms for mechanical switch debouncing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Verification:\u003c\/strong\u003e Power on and activate each input. Verify that the corresponding LED illuminates and the PLC I\/O table reflects the correct state.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eChoose the \u003cstrong\u003e2MLI-D28A\u003c\/strong\u003e when you need \u003cstrong\u003emaximum digital input density\u003c\/strong\u003e (64 points) in a single module slot.\u003c\/li\u003e\n  \u003cli\u003eFor \u003cstrong\u003esmaller I\/O counts\u003c\/strong\u003e or simpler wiring, the \u003cstrong\u003e2MLI-D22A\u003c\/strong\u003e (16-point) or \u003cstrong\u003e2MLI-D24A\u003c\/strong\u003e (32-point) may be more cost-effective.\u003c\/li\u003e\n  \u003cli\u003ePlan \u003cstrong\u003ecable management carefully\u003c\/strong\u003e — 64 wires require organized routing. Use cable ducts and labeled breakout boards.\u003c\/li\u003e\n  \u003cli\u003eVerify that your \u003cstrong\u003epower supply capacity\u003c\/strong\u003e accounts for the ~60 mA module draw plus all connected sensor loads.\u003c\/li\u003e\n  \u003cli\u003eWhen mixing NPN and PNP sensors, clearly segregate wiring by COM group to avoid configuration errors.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53959477821624,"sku":"2MLI-D28A","price":157.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/2MLI-D24A_3.png?v=1787197731","url":"https:\/\/www.globalpetroparts.com\/products\/honeywell-2mli-d28a-64-point-digital-input-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}