{"product_id":"honeywell-2mli-d24a-32-point-dc-24v-digital-input-module","title":"Honeywell 2MLI-D24A 32-Point DC 24V Digital Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell 2MLI-D24A\u003c\/strong\u003e is a \u003cstrong\u003e32-point DC 24V digital input module\u003c\/strong\u003e for the \u003cstrong\u003eMasterLogic-200 (ML200)\u003c\/strong\u003e PLC system. It supports both \u003cstrong\u003esourcing (PNP) and sinking (NPN)\u003c\/strong\u003e input configurations, making it universally compatible with a wide range of sensors, switches, and field devices. With \u003cstrong\u003ephoto-coupler isolation\u003c\/strong\u003e and configurable input filtering, it delivers reliable digital signal acquisition in high-speed manufacturing and process environments.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e 32-Point Digital Input Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e MasterLogic-200 \/ ML200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Points:\u003c\/strong\u003e 32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Input Voltage:\u003c\/strong\u003e DC 24V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage Range:\u003c\/strong\u003e DC 20.4V to 28.8V (ripple rate \u0026lt;5%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Input Current:\u003c\/strong\u003e Approx. 4 mA per point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Type:\u003c\/strong\u003e Source\/Sink (configurable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn Voltage\/Current:\u003c\/strong\u003e DC 19V or higher \/ 3 mA or higher\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff Voltage\/Current:\u003c\/strong\u003e DC 11V or lower \/ 1.7 mA or lower\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\u003eResponse Time:\u003c\/strong\u003e 1 ms \/ 3 ms \/ 5 ms \/ 10 ms \/ 20 ms \/ 70 ms \/ 100 ms (CPU parameter selectable, default 3 ms)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation Method:\u003c\/strong\u003e Photo-coupler isolation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation Voltage:\u003c\/strong\u003e AC 560V rms \/ 3 cycles (altitude 2000m)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Method:\u003c\/strong\u003e 32 points \/ 1 COM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Connection:\u003c\/strong\u003e 40-point connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Consumption:\u003c\/strong\u003e 50 mA (from 5V internal bus)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 27.4 mm x 90 mm x 70 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. 0.1 kg (100 g)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to +55°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e32 high-density inputs in one slot\u003c\/strong\u003e — reduces module count by 50% compared to 16-point designs, lowering hardware cost and cabinet space\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal source\/sink compatibility\u003c\/strong\u003e — accepts both PNP and NPN sensors without wiring changes or module swaps, simplifying BOM management\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigurable input filtering\u003c\/strong\u003e — 1 ms to 100 ms response time selection via CPU parameters eliminates chatter from mechanical switches and reduces false counts from contact bounce\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e560V AC isolation\u003c\/strong\u003e — photo-coupler isolation protects the CPU and backplane from field-side voltage transients and ground loops\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact 27.4 mm width\u003c\/strong\u003e — high-density packaging enables up to 12 I\/O modules in a single 12-slot base\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAutomotive assembly line sensor aggregation (proximity, photoelectric, limit switches)\u003c\/li\u003e\n\u003cli\u003eConveyor system position and product detection\u003c\/li\u003e\n\u003cli\u003ePackaging machinery bag-present and gate-closed sensors\u003c\/li\u003e\n\u003cli\u003eWater\/wastewater pump status and level switch monitoring\u003c\/li\u003e\n\u003cli\u003eBuilding automation HVAC fan proof and filter status inputs\u003c\/li\u003e\n\u003cli\u003eMaterial handling crane limit and safety interlock inputs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify input polarity\u003c\/strong\u003e — confirm whether your field devices are sourcing (PNP) or sinking (NPN) and wire the COM terminal accordingly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall on de-energized base\u003c\/strong\u003e — align the module with the base connector and press firmly until the retention clips engage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect 40-pin field cable\u003c\/strong\u003e — use the Honeywell 40-point connector or terminal block adapter (TG7-1H40S) to wire field devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply 24V DC field power\u003c\/strong\u003e — connect a stable 24V DC supply (20.4–28.8V) to the COM and input terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigure response time\u003c\/strong\u003e — in SoftMaster, set the input filter to 1 ms for high-speed counting or 10–100 ms for mechanical switch debounce.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest each point\u003c\/strong\u003e — activate each sensor and verify the corresponding input LED illuminates and the CPU register updates.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 2MLI-D24A and 2MLI-D24B?\u003c\/strong\u003e\u003cbr\u003e\nA: The \u003cstrong\u003e2MLI-D24A\u003c\/strong\u003e supports \u003cstrong\u003eboth source and sink\u003c\/strong\u003e configurations. The \u003cstrong\u003e2MLI-D24B\u003c\/strong\u003e is \u003cstrong\u003esource-type only\u003c\/strong\u003e. The A variant offers greater flexibility; the B variant is lower cost for pure PNP applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this with AC input devices?\u003c\/strong\u003e\u003cbr\u003e\nA: \u003cstrong\u003eNo.\u003c\/strong\u003e This is a DC 24V input module. For AC inputs (110V or 220V), select \u003cstrong\u003e2MLI-A21A\u003c\/strong\u003e or \u003cstrong\u003e2MLI-A12A\u003c\/strong\u003e respectively.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum number of 2MLI-D24A modules per CPU?\u003c\/strong\u003e\u003cbr\u003e\nA: The \u003cstrong\u003e2MLI-CPUU\u003c\/strong\u003e supports up to \u003cstrong\u003e6,144 I\/O points\u003c\/strong\u003e. At 32 points per module, you can theoretically install up to 192 modules, limited by power supply capacity and base slot count.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this module support interrupt inputs?\u003c\/strong\u003e\u003cbr\u003e\nA: \u003cstrong\u003eNo.\u003c\/strong\u003e For high-speed interrupt or counter inputs, use the \u003cstrong\u003e2MLF-HO2A\u003c\/strong\u003e (pulse input) module or the CPU's built-in high-speed counter functions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What cable gauge is recommended?\u003c\/strong\u003e\u003cbr\u003e\nA: Use \u003cstrong\u003e0.3–0.75 mm² (22–18 AWG)\u003c\/strong\u003e stranded or solid copper wire. The 40-point connector supports up to 0.75 mm² per pin.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChoose \u003cstrong\u003e2MLI-D24A\u003c\/strong\u003e when you need \u003cstrong\u003e32 DC 24V inputs\u003c\/strong\u003e with mixed PNP\/NPN sensor types.\u003c\/li\u003e\n\u003cli\u003eIf your plant uses \u003cstrong\u003eexclusively PNP (sourcing) sensors\u003c\/strong\u003e, the \u003cstrong\u003e2MLI-D24B\u003c\/strong\u003e offers the same density at lower cost.\u003c\/li\u003e\n\u003cli\u003eFor \u003cstrong\u003eisolated input channels\u003c\/strong\u003e (e.g., mixed-voltage systems), consider the \u003cstrong\u003e2MLI-D21D\u003c\/strong\u003e (8-point isolated) instead.\u003c\/li\u003e\n\u003cli\u003eAlways verify your \u003cstrong\u003esensor output type\u003c\/strong\u003e before ordering — mixing PNP and NPN on the same COM group will cause input faults.\u003c\/li\u003e\n\u003cli\u003ePair with the \u003cstrong\u003eTG7-1H40S terminal board\u003c\/strong\u003e and \u003cstrong\u003eC40HF-15PB-1 cable\u003c\/strong\u003e for organized, tool-free field wiring.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53952800489656,"sku":"2MLI-D24A","price":158.0,"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-d24a-32-point-dc-24v-digital-input-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}