{"product_id":"honeywell-900a01-0102-hc900-series-analog-input-module","title":"Honeywell 900A01-0102 HC900 Series Analog Input Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned to interface directly with the Honeywell HC900 controller platform, the \u003cstrong\u003eHoneywell 900A01-0102\u003c\/strong\u003e delivers high-accuracy signal acquisition for demanding industrial process control loops. This high-density \u003cstrong\u003eanalog input module\u003c\/strong\u003e processes multiple field sensor signals, translating physical variables into precise digital data for the system CPU. Built for high noise immunity and long-term stability, the module is engineered to operate reliably in harsh ambient environments, making it suitable for chemical processing, thermal management, and water treatment operations.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Input Flexibility:\u003c\/strong\u003e Supports direct termination of thermocouples, RTDs, linear voltage, and current loops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGalvanic Channel Isolation:\u003c\/strong\u003e Provides excellent common-mode rejection and prevents ground loop interference from corrupting control logic.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution A\/D Conversion:\u003c\/strong\u003e Integrates a 16-bit analog-to-digital converter to ensure precise resolution of fine process changes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOn-Board Diagnostics:\u003c\/strong\u003e Actively monitors sensor integrity, lead resistance, and out-of-range thresholds to trigger system alarms immediately.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHot-Swappable Design:\u003c\/strong\u003e Enables module extraction and insertion under field power to minimize process downtime during maintenance cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Process Monitoring:\u003c\/strong\u003e Direct temperature acquisition from thermocouples (Type J, K, T, E, R, S, B, N) and PT100 RTD elements in industrial ovens and autoclaves.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlow and Pressure Loops:\u003c\/strong\u003e Acquisition of standard 4-20mA transmitter signals for gas flow and hydrostatic level transmitters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCritical Machinery Telemetry:\u003c\/strong\u003e Integration of low-voltage DC signals for specialized chemical concentration and analysis monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #cbd5e0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eHoneywell\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e900A01-0102\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eController Series Compatibility\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eHoneywell HC900 Controller System\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eInput Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e8 Channels (Universal Inputs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eA\/D Resolution\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e16-bit Sigma-Delta Converter\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eInput Impedance\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eGreater than 10 Megohms for voltage inputs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eGalvanic Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eChannel-to-system: 400 VDC; Channel-to-channel: Passive isolation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eModule Power Dissipation\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2.2 Watts maximum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0 to 60 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-40 to 85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eRelative Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e5% to 95% RH (non-condensing)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eUnited States\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.95 kg (approx. 2.1 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e22.5 cm x 15.0 cm x 6.5 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe 900A01-0102 serves as a direct functional form-factor replacement for earlier legacy analog modules within the HC900 platform. When upgrading hardware revisions, ensure that your configuration file in the Hybrid Control Designer (HCD) software matches the exact module model sequence to avoid racking configuration mismatches during download. Firmwares prior to v2.0 may require system software updates to successfully map advanced diagnostic functions on newer module iterations.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eA common issue encountered during configuration of 4-20mA current loops is failing to install an external shunt resistor across the target channel input terminals. Because this is a universal module, current loops require an external precision 250-ohm resistor to convert the current loop into a corresponding 1-5VDC signal. Without this shunt, the module will interpret the open circuit as an out-of-range upscale fault.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen wiring 3-wire RTDs, ensure that the lead resistance on all three conductors is matched as closely as possible. Large resistance imbalances between the return and compensation lines directly introduce measurement offset errors. Shielded twisted-pair cables must be utilized for all thermocouple inputs, with the drain wire grounded strictly at the controller end to mitigate high-frequency electromagnetic interference in environments with large variable frequency drives (VFDs).\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 15px; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 5px 0;\"\u003eCRITICAL SYSTEM WARNING\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eIsolate and de-energize all primary field power loops and rack backplane systems before performing physical module replacement or wiring terminations. Failure to safely isolate active electrical circuits poses severe risks of arc flash, component degradation, and immediate controller faulting.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003col style=\"list-style: none; padding: 0; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; margin-right: 12px; font-weight: bold; flex-shrink: 0;\"\u003e1\u003c\/span\u003e\n    \u003cspan style=\"color: #2d3748;\"\u003eAlign the module terminal guides with the designated slot in the HC900 rack enclosure.\u003c\/span\u003e\n  \u003c\/li\u003e\n  \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; margin-right: 12px; font-weight: bold; flex-shrink: 0;\"\u003e2\u003c\/span\u003e\n    \u003cspan style=\"color: #2d3748;\"\u003eSlide the module firmly back until it seats completely into the passive multi-bus backplane connector. Secure the module locking screw.\u003c\/span\u003e\n  \u003c\/li\u003e\n  \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; margin-right: 12px; font-weight: bold; flex-shrink: 0;\"\u003e3\u003c\/span\u003e\n    \u003cspan style=\"color: #2d3748;\"\u003eConnect the pre-wired terminal block assembly to the front-facing connector. Screw the retaining ears tight to ensure positive physical connection.\u003c\/span\u003e\n  \u003c\/li\u003e\n  \u003cli style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; margin-right: 12px; font-weight: bold; flex-shrink: 0;\"\u003e4\u003c\/span\u003e\n    \u003cspan style=\"color: #2d3748;\"\u003eRestore power to the backplane, and monitor the module status LEDs to verify initialization and diagnostic status pass tests.\u003c\/span\u003e\n  \u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52705340457323,"sku":"900A01-0102","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/900A01-0102-dfbvbkzcmc5_f43b5bec-b9dd-4d52-8f84-522ce71759f7.jpg?v=1766640967","url":"https:\/\/www.plcprotech.com\/id\/products\/honeywell-900a01-0102-hc900-series-analog-input-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}