{"product_id":"1746-ig16-allen-bradley-digital-dc-input-module","title":"1746-IG16 | Allen-Bradley | Digital DC Input Module","description":"\u003cp\u003eConfigured for TTL signal acquisition in SLC 500 control networks, the \u003cstrong\u003eAllen-Bradley 1746-IG16\u003c\/strong\u003e (\u003cstrong\u003e1746-IG16\u003c\/strong\u003e Digital DC Input Module) provides direct physical\/electrical execution of logic-level monitoring for 5 VDC source devices.\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\u003e1746-IG16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\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\u003e0.23 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eNot Specified\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\u003e1 W (Total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e4.5-5.5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e140 mA at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1746-IG16\u003c\/strong\u003e integrates into the SLC 500 backplane, facilitating high-speed data acquisition for TTL or BCD compatible field devices. The module requires specific backplane bus communication velocity settings to maintain deterministic I\/O scanning intervals. Users must ensure that the firmware flash compatibility of the SLC 500 processor supports the high-speed input polling cycle (0.25 to 0.5 ms signal delay). The I\/O density scaling allows for high-channel utilization without exceeding the backplane current capacity; however, users should calculate the cumulative power draw when populating multiple slots to prevent bus voltage sag.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1746-IG16 module support hot-swapping during processor operation?\u003c\/p\u003e\n\u003cp\u003eA: No. The 1746-IG16 does not support hot-swapping. The chassis must be de-energized to prevent electrical faults or damage to the backplane communication pins during module insertion or removal.\u003c\/p\u003e\n\u003cp\u003eQ: How is the signal delay profile managed by the input filter?\u003c\/p\u003e\n\u003cp\u003eA: The module offers selectable signal delay settings of 0.25 ms or 0.5 ms. These values define the debounce time before a high or low transition is registered by the processor, ensuring signal stability against transient noise.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the SLC 500 chassis and verify zero voltage at the backplane before installation.\u003c\/li\u003e\n\u003cli\u003eInstall the 1746-RT25B removable terminal block securely to ensure consistent contact resistance for all 16 input channels.\u003c\/li\u003e\n\u003cli\u003eUtilize 1746-HT or 1746-HCA connectors for reliable I\/O wiring, ensuring that the cable shields are properly terminated to the chassis ground to minimize electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eVerify the 5 VDC source polarity before connecting external field devices to prevent damage to the input circuitry.\u003c\/li\u003e\n\u003cli\u003ePerform a wiring continuity check to confirm that no short-circuit exists between the input signal and the chassis common.\u003c\/li\u003e\n\u003cli\u003eOnce installed, confirm the module status via the programming software and verify that the input status LED indicators map correctly to the expected logic state.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53514777755832,"sku":"1746-IG16","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1746-IG16.jpg?v=1779851493","url":"https:\/\/www.globalpetroparts.com\/products\/1746-ig16-allen-bradley-digital-dc-input-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}