{"product_id":"3-aadc1-edwards-addressable-analog-circuit-module-for-est3-99-sensors-99-modules","title":"3-AADC1 | Edwards Addressable Analog Circuit Module for EST3, 99 Sensors \u0026 99 Modules","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003eThe Edwards 3-AADC1 (part number 3-AADC1) is an addressable analog circuit module for EST3 systems, providing connectivity for up to 99 sensors and 99 modules on a single loop. It supports Class A (Style 7) or Class B (Style 4) wiring and includes ground fault detection at the loop level. The 3-AADC1 is discontinued by the manufacturer but remains a key replacement option for legacy EST3 installations.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEdwards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePLCs\/Machine Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-AADC1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePLC Module\/Rack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 LRM space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Addressable Analog Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Current (Standby)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e175 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Current (Alarm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e205 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCircuit Capacitance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 µF max, all branches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCircuit Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 Ohms max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAddressable Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e99 sensors + 99 modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass A (Style 7) or Class B (Style 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGround Fault Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10k Ohms minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolator Modules Allowed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 maximum per circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDevices Between Isolators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDevices Between Panel \u0026amp; First Isolator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25 maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 AWG (2.5 mm²) max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTermination\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRemovable plug-in terminal strip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32°F to 120°F (0°C to 49°C), 93% RH non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgency Listings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL, ULC, CE, LPCB, EN54 (pending at discontinuation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.66 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003e3-AADC1\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe 3-AADC1 is a microprocessor-based module that installs in one local rail module (LRM) space within EST3 chassis assemblies. Designed as a direct replacement for the 3-AADC, it offers 100% backward compatibility with existing systems. The unit continuously monitors analog device outputs, reporting their status to the system CPU, while internal diagnostics aid in troubleshooting. With removable plug-in connectors, nonvolatile memory, and System Definition Utility programming, the 3-AADC1 simplifies installation, programming, and long-term maintenance of EST3 fire alarm systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAddressable Analog Circuit Module: Provides supervised communication with intelligent devices.\u003c\/li\u003e\n\u003cli\u003eDevice Capacity: Supports up to 99 analog sensors and 99 input\/control modules per circuit.\u003c\/li\u003e\n\u003cli\u003eWiring Options: Compatible with Class A (Style 7) and Class B (Style 4) wiring topologies.\u003c\/li\u003e\n\u003cli\u003eGround Fault Detection: Identifies ground faults by loop for faster troubleshooting.\u003c\/li\u003e\n\u003cli\u003eBackward Compatibility: Fully compatible with legacy 3-AADC systems.\u003c\/li\u003e\n\u003cli\u003eNonvolatile Memory: Stores operating system software and data files securely.\u003c\/li\u003e\n\u003cli\u003ePC Programmable: Configurable with System Definition Utility for device address, type, sensitivity, and verification.\u003c\/li\u003e\n\u003cli\u003eInternal Diagnostics: Built-in test functions to support maintenance and fault isolation.\u003c\/li\u003e\n\u003cli\u003eRemovable Terminals: Plug-in connectors simplify installation and replacement without tools.\u003c\/li\u003e\n\u003cli\u003eSupports UIM Modules: Provides hinged panel space for optional Control Display Modules.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 3-AADC1 delivers the reliability and supervision required for managing addressable loops in EST3 fire and security systems.\u003c\/p\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":49105186619648,"sku":"3-AADC1","price":3942.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/s-l1600_1129a54b-8c20-4d33-b0a2-e678bc25d474.webp?v=1785542134","url":"https:\/\/alotechparts.com\/products\/3-aadc1-edwards-addressable-analog-circuit-module-for-est3-99-sensors-99-modules","provider":"Alo Tech Solutions","version":"1.0","type":"link"}