{"product_id":"ic697alg440-ge-series-90-70-analog-input-expander-4-20ma-precision","title":"IC697ALG440 GE Series 90-70 Analog Input Expander 4-20mA Precision","description":"\u003ch3\u003eEngineering Overview: Scalable Analog Acquisition\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #2c3e50;\"\u003eIC697ALG440\u003c\/span\u003e\u003c\/strong\u003e is a dedicated 16-channel \u003cstrong\u003eCurrent Input Expander Module\u003c\/strong\u003e designed to augment the analog processing capabilities of the \u003cstrong\u003eGE Fanuc \u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/ge-series-90-30-series-90-70\"\u003eSeries 90-70\u003c\/a\u003e\u003c\/strong\u003e PLC family. This module enables high-density 4-20mA current loop monitoring with 16-bit resolution. By integrating with a base converter and voltage expanders, it allows engineers to scale analog subsystems up to 120 input channels within a single system architecture.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specification Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e IC697ALG440 (Series 90-70 Analog Expander)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 16 Analog Channels (4-20mA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 16-bit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e +\/- 0.07% of full scale\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpdate Rate:\u003c\/strong\u003e 2.4 ms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB’s Insight\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #2c3e50;\"\u003eIC697ALG440\u003c\/span\u003e\u003c\/strong\u003e acts as the high-resolution front-end for complex process loops. A critical technical note for users: the expander relies on a multiplexing switching circuit to connect individual inputs to the ADC. Because of this, scan synchronization is vital. Ensure the module is placed physically adjacent to the base converter in the rack to minimize EMI-induced noise on the serial differential bus (terminals 37\/39). Improper grounding of the optional shield at terminal 35 is a frequent cause of \"floating\" analog values in 4-20mA loops.\u003c\/p\u003e\n\u003ch3\u003eIndustrial Applications, Diagnostics \u0026amp; Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable Equipment:\u003c\/strong\u003e Large-scale chemical process control, flow totalization systems, environmental monitoring stations, and centralized industrial instrumentation hubs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Capability:\u003c\/strong\u003e Features integrated module health diagnostics and channel response detection. LED status indicators provide immediate verification of input integrity, allowing for quick isolation of open-loop faults in the 4-20mA circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month comprehensive factory-grade warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e Expedited global transit via FedEx, UPS, or DHL; 24–48 hour dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eExpert Frequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is the base converter module required for operation?\u003c\/strong\u003e\u003cbr\u003eThe IC697ALG440 is an expansion unit, not a standalone I\/O module. It lacks the internal ADC to process raw analog signals independently and must hand off serialized data to the base converter for PLC backplane communication.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the impact of using 2's complement format for data?\u003c\/strong\u003e\u003cbr\u003eThis representation handles both positive and negative values in binary, which is essential for scaling inputs that might cross zero points. Ensure your PLC logic software is configured to interpret this specific data format.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I resolve channel \"crosstalk\" between adjacent input signals?\u003c\/strong\u003e\u003cbr\u003eCrosstalk usually occurs when the signal wires are run parallel to high-voltage AC cables. Ensure your analog current loops use twisted-pair shielded cabling and that the shield is grounded at only one end.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a limit to how many modules can be daisy-chained?\u003c\/strong\u003e\u003cbr\u003eYes, the maximum system capacity is 120 input channels. Exceeding this limit will cause addressing conflicts and overflow errors in the base converter's input buffer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the 2.4ms update rate?\u003c\/strong\u003e\u003cbr\u003eThis rate represents the time required to cycle through all 16 channels. If your process requires faster sensing of a dynamic variable (like vibration or pressure spikes), you should consider reducing the number of active channels or using a dedicated high-speed I\/O module.\u003c\/p\u003e","brand":"GE Fanuc","offers":[{"title":"Default Title","offer_id":45014012133558,"sku":"IC697ALG440","price":122.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/IC697ALG440.jpg?v=1779875695","url":"https:\/\/www.plcsparehub.com\/products\/ic697alg440-ge-series-90-70-analog-input-expander-4-20ma-precision","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}