{"product_id":"ge-st-3218-input-module","title":"GE ST-3218 Input Module","description":"\u003cp\u003eConfigured for high-density distributed telemetry scanning and continuous current-loop variable acquisition within industrial automation networks, the \u003cstrong\u003eGE ST-3218\u003c\/strong\u003e (\u003cstrong\u003eST-3218\u003c\/strong\u003e Analog Input Module) provides direct physical\/electrical execution. It digitizes external 0-20 mA process variables directly onto the high-speed RSTi slice bus infrastructure natively at the hardware tier to maintain real-time process image maps parallel to master processing bus execution cycles.\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\u003eST-3218\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE (General Electric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.01 lbs (0.005 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Density\u003c\/td\u003e\n\u003ctd\u003e8 single-ended current input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Range Baseline\u003c\/td\u003e\n\u003ctd\u003e0-20 mA current loops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eADC Resolution\u003c\/td\u003e\n\u003ctd\u003e12-bit analog-to-digital conversion matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eRSTi Series Distributed I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Lifecycle Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Profile\u003c\/td\u003e\n\u003ctd\u003eCompact slice bus DIN-rail layout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eTracks standard RSTi backplane current allocations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Processing Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEtherNet\/IP Deterministic Networks and Bus Integration:\u003c\/strong\u003e The ST-3218 interfaces with master controllers via the high-speed Ethernet-based RSTi backplane network. The integrated 12-bit analog-to-digital converter (ADC) multiplexes all 8 single-ended channels, writing the resulting binary registers directly into host controller input memory within fixed millisecond network sync intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling and Backplane Load Profiles:\u003c\/strong\u003e The card packs 8 analog inputs into an ultra-compact 0.01 lbs slice footprint, maximizing panel space efficiency. Internal logic trace isolation separates the 0-20 mA field circuits from the backplane logic rail, preventing field ground loop currents from injecting noise into adjacent processing slices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Flash Compatibility and Signal Stability:\u003c\/strong\u003e Onboard signal conditioning circuitry applies a hardware-tier low-pass filter to eliminate high-frequency electromagnetic interference (EMI). The conversion registers maintain structural steady states during standard firmware flash updates, protecting loop-control logic from unexpected telemetry dropouts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What specific hardware behaviors manifest if an external 0-20 mA current loop encounters a short circuit directly to ground?\u003c\/p\u003e\n\u003cp\u003eA: The single-ended design measures loop current relative to a shared internal analog ground. A short circuit to external chassis ground alters the return path, causing significant measurement error or an over-range clamp on that channel, but internal current-limiting components protect the 12-bit ADC block from permanent structural failure.\u003c\/p\u003e\n\u003cp\u003eQ: Can this 0.01 lbs analog input slice module be unclipped from the DIN-rail assembly while the rack is under power?\u003c\/p\u003e\n\u003cp\u003eA: No. The RSTi slice architecture does not support live hot-swapping. Extracting a card while the slice bus is energized can disrupt the serial frame sequence, resulting in packet corruption, loss of downstream synchronization, and triggering a critical network adapter fault.\u003c\/p\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":47705120440510,"sku":"ST-3218","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-06-24_10-10-57.png?v=1782268856","url":"https:\/\/www.autooiltech.com\/ar\/products\/ge-st-3218-input-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}