{"product_id":"allen-bradley-1756sc-ctr8-controllogix-8-channel-counter-input-module","title":"Allen Bradley 1756SC-CTR8 ControlLogix 8-Channel Counter Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 1756SC-CTR8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-density, specialty counter module designed for the ControlLogix platform. This module provides 8 independent single-ended channels to capture high-speed pulses from encoders, flow meters, and proximity sensors. By offloading counting tasks from the main CPU, it ensures high-precision measurement for velocity, positioning, and totalization applications. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal factory equipment to guarantee the performance and signal integrity required for mission-critical automation loops.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSpectrum Controls \/ Allen Bradley\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eControlLogix Specialty I\/O\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCounter Input Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 Single-Ended Channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMaximum Counter Speed\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e65 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e50V (Continuous)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (5V)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e150 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (24V)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.97 lbs (0.44 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Platform\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1756 ControlLogix Chassis\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Signal Processing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756SC-CTR8 handles input frequencies up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e65kHz\u003c\/strong\u003e. This speed allows the module to accurately track fast-moving industrial processes, such as high-speed bottling lines or turbine flow measurements, where standard digital input cards would fail to register pulses.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eChassis-Based Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module slots directly into any standard 1756 ControlLogix chassis. It utilizes the high-speed backplane to communicate directly with the controller, eliminating the latency issues associated with remote I\/O or serial-linked counting devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndependent Channel Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEngineers configure each of the 8 channels independently. This versatility enables the simultaneous tracking of multiple variables, such as motor RPM, product counts, and volumetric flow, within a single slot footprint.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduced CPU Overhead:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe onboard processor handles all pulse accumulation and frequency calculations. This localized processing frees up the main Logix controller's resources, allowing the CPU to focus on higher-level logic and communication tasks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1756SC-CTR8 interface with 5V TTL encoders?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The module supports a wide range of single-ended signal levels. However, always verify the specific voltage threshold settings in the module configuration to ensure the 65kHz speed stays consistent without signal dropouts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require a specific Removable Terminal Block (RTB)?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756SC-CTR8 typically utilizes the standard 1756-TBCH (36-pin Cage Clamp) or 1756-TBS6H (36-pin Spring Clamp) terminal blocks. Note that the RTB does not ship with the module and you must purchase it separately to complete the installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the module handle power loss?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module transfers accumulated count data to the Logix controller over the backplane. During a power cycle, the controller stores the last known values in non-volatile memory (if programmed), preventing the loss of totalization data during system restarts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the condition of this product?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee this 1756SC-CTR8 is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e. It arrives in the original manufacturer’s packaging with all factory seals intact. We do not provide refurbished or used surplus items.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52804675207477,"sku":"1756SC-CTR8","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1756SC-CTR8.png?v=1777531156","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-1756sc-ctr8-controllogix-8-channel-counter-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}