{"product_id":"1746-ib16-allen-bradley-slc-500-digital-input-module-16-point-i-o","title":"1746-IB16 Allen Bradley SLC 500 Digital Input Module | 16-Point I\/O","description":" \u003ch3\u003e\u003cstrong\u003eAllen Bradley 1746-IB16 | SLC 500 Digital Input Module\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color:#1565c0;\"\u003e1746-IB16\u003c\/span\u003e\u003c\/strong\u003e is a 16-point DC digital input module for the \u003cstrong\u003eSLC 500 control platform\u003c\/strong\u003e from Allen Bradley. It receives discrete field signals and transfers their status to the controller through the backplane.\u003c\/p\u003e\n\n\u003cp\u003eWith a \u003cstrong\u003e10–30V DC operating range\u003c\/strong\u003e, this module supports compatible industrial switching devices. Its removable terminal block simplifies field wiring and module replacement during planned maintenance.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e01 | Engineering Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Allen Bradley\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Line:\u003c\/strong\u003e SLC 500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color:#1565c0;\"\u003e1746-IB16\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e Digital DC Input Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Configuration:\u003c\/strong\u003e 16 current-sinking inputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Category:\u003c\/strong\u003e 24V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 10–30V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Signal Delay:\u003c\/strong\u003e 8 ms, ON or OFF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Dissipation per Point:\u003c\/strong\u003e 0.2 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Heat Dissipation:\u003c\/strong\u003e 0.425 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Heat Dissipation:\u003c\/strong\u003e 3.6 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current at 5V DC:\u003c\/strong\u003e 50 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current at 24V DC:\u003c\/strong\u003e 0 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Block:\u003c\/strong\u003e Removable, included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approximately 0.40 kg (0.88 lb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 662468067041\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecification note:\u003c\/strong\u003e The figures above follow the supplied product information. Confirm detailed electrical limits and wiring requirements against the applicable Allen Bradley documentation before installation.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e02 | How the Module Works\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe input channels monitor discrete field-device states. The controller reads these states through the SLC 500 backplane and uses them in the control program.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal acquisition:\u003c\/strong\u003e Receives compatible DC switching signals from field devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eController interface:\u003c\/strong\u003e Transfers input status through the chassis backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResponse timing:\u003c\/strong\u003e The stated maximum signal delay is 8 ms for ON or OFF transitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance access:\u003c\/strong\u003e The removable terminal block supports easier wiring service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCurrent-sinking terminology describes the input circuit's electrical configuration. Do not assume that every sourcing or sinking sensor is compatible. Check the field device's output type and the module's official wiring diagram first.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e03 | Installation and Commissioning\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the hardware:\u003c\/strong\u003e Verify the module number, chassis compatibility, and available slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate the equipment:\u003c\/strong\u003e Follow plant lockout procedures before handling the module or field wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify polarity:\u003c\/strong\u003e Confirm DC supply polarity and field-device wiring against the manufacturer's diagram.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect the terminal block:\u003c\/strong\u003e Check connector seating and inspect terminals for looseness or corrosion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigure the controller:\u003c\/strong\u003e Confirm the correct SLC 500 I\/O slot configuration and input addresses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest each channel:\u003c\/strong\u003e Operate the field device and compare its physical state with the controller input status.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument the results:\u003c\/strong\u003e Record channel assignments, test results, and any wiring changes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eField example:\u003c\/strong\u003e A conveyor fails to start because the controller does not recognize a limit switch. Measure the field signal, inspect the return path, and check the corresponding input status before replacing the module.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e04 | Compatible Equipment and Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color:#1565c0;\"\u003e1746-IB16\u003c\/span\u003e\u003c\/strong\u003e suits compatible Allen Bradley SLC 500 installations that require discrete DC input monitoring.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePLC systems:\u003c\/strong\u003e Compatible SLC 500 chassis and controller configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial handling:\u003c\/strong\u003e Conveyor limit switches, position switches, and equipment interlocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing lines:\u003c\/strong\u003e Push buttons, selector switches, and machine status contacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging equipment:\u003c\/strong\u003e Guard switches, product detection signals, and cycle feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater treatment:\u003c\/strong\u003e Discrete equipment status and compatible DC switch signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUtilities and process plants:\u003c\/strong\u003e Pump status contacts and local equipment permissives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eActual compatibility depends on the chassis, field voltage, output circuit, and wiring arrangement. This module handles discrete signals rather than continuous 4–20 mA measurements.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e05 | Troubleshooting and Diagnostic Checks\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput remains OFF:\u003c\/strong\u003e Measure the field signal and verify the return path, polarity, and terminal connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput remains ON:\u003c\/strong\u003e Check for a short circuit, incorrect common wiring, or a field device that stays active.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntermittent input:\u003c\/strong\u003e Inspect loose terminals, damaged conductors, electrical noise, and unstable field power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncorrect input address:\u003c\/strong\u003e Verify the physical slot, controller configuration, and program addressing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple channels fail:\u003c\/strong\u003e Check shared field power and common wiring before suspecting individual channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnexpected machine response:\u003c\/strong\u003e Compare the physical input, controller status, program logic, and output response.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe module supports discrete-state acquisition. Detailed fault identification depends on the controller diagnostics and available status indicators. Do not assume that it independently identifies every field wiring fault.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e06 | Global PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eIn field maintenance, replacing a module without checking the signal path can waste time and leave the original fault unresolved.\u003c\/p\u003e\n\n\u003cp\u003eFor example, a packaging machine may report a missing guard-switch signal after maintenance. An engineer should check the switch, DC supply, common wiring, terminal connections, and controller input status in sequence.\u003c\/p\u003e\n\n\u003cp\u003eIf the correct electrical signal reaches the module but the controller still reports an incorrect state, inspect the slot configuration and module condition. Test the replacement under controlled conditions before returning the equipment to service.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSelection advice:\u003c\/strong\u003e Match the input voltage, channel count, electrical configuration, chassis compatibility, and required response time. If the application needs analog measurement or a different DC input circuit, select the appropriate module instead.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e07 | Supply, Packaging, and Warranty\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplied Product:\u003c\/strong\u003e Allen Bradley 1746-IB16 digital input module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective packaging suitable for international transportation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month warranty, subject to the seller's agreed terms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch:\u003c\/strong\u003e Typically within 24–48 hours after order confirmation and stock verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Options:\u003c\/strong\u003e FedEx, UPS, and DHL, subject to destination and service availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuotation:\u003c\/strong\u003e Contact our sales team to confirm stock, condition, delivery cost, and lead time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003ePackaging contents may vary by order. Confirm the inclusion of the removable terminal block and any additional accessories before purchase.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e08 | Frequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ1: How can I distinguish a field wiring fault from an input module fault?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMeasure the signal at the field terminals and compare it with the controller's input status. Check the common wiring and polarity first. If the electrical conditions match the official wiring requirements, continue with slot and module checks.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ2: Will an 8 ms signal delay suit high-speed counting applications?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eNot necessarily. Evaluate the complete input response and scan cycle against the required pulse duration. Use a suitable high-speed counter or dedicated input module when ordinary discrete inputs cannot capture the signal reliably.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ3: What should I check when several input points fail simultaneously?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eInspect shared DC power, common wiring, connectors, and the chassis before testing individual channels. Multiple simultaneous failures often justify checking shared electrical conditions first, although the actual cause requires measurement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ4: Can I replace this module with another 16-point DC input card?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDo not select a replacement by channel count alone. Verify the complete catalog number, electrical configuration, chassis support, terminal arrangement, and controller compatibility. Confirm the substitute against official documentation before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ5: What information should I provide when requesting a quotation?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eProvide the full catalog number, required quantity, installation platform, delivery destination, and preferred shipping service. Include a photo of the existing label when available. These details help our team check compatibility, stock, and delivery options.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eRequest a Quote for Allen Bradley 1746-IB16\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eNeed a replacement for your SLC 500 digital input system? Contact Global PLC Spare HUB to confirm the \u003cstrong\u003e\u003cspan style=\"color:#1565c0;\"\u003e1746-IB16\u003c\/span\u003e\u003c\/strong\u003e configuration, availability, warranty, and shipping options.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSend your part number and quantity to request a quotation.\u003c\/strong\u003e\u003c\/p\u003e ","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":67630490353846,"sku":"1746-IB16","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1746-IB16-3.jpg?v=1791880857","url":"https:\/\/www.plcsparehub.com\/products\/1746-ib16-allen-bradley-slc-500-digital-input-module-16-point-i-o","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}