{"product_id":"honeywell-05701-a-0512-rear-access-rack-assembly","title":"Honeywell 05701-A-0512 Rear Access Rack Assembly","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 05701-A-0512\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e05701-A-0512\u003c\/strong\u003e Rack Assembly, operates as a dedicated hardware component for mechanical slot protection and electrical bus routing within System 57 gas detection and industrial control networks. The subassembly functions as an 8-way structural chassis, establishing parallel backplane power and signal infrastructure to interconnect up to eight plug-in control or drive cards.\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\u003e05701-A-0512 (05701A0512)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States (USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.20 lbs (1.00 kg net structural frame mass profile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eSpec-matched 8-way multi-slot sub-rack panel footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e8-Way Rack Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Configuration\u003c\/td\u003e\n\u003ctd\u003eRear access termination layout for field and power wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Capacity\u003c\/td\u003e\n\u003ctd\u003eAccommodates up to 8 independent System 57 control cards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Interface\u003c\/td\u003e\n\u003ctd\u003eIntegrated multi-slot parallel bus PCB distribution matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifecycle Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control and DCS Instrumentation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8-Way Backplane Signal Routing and Bus Integrity:\u003c\/strong\u003e The chassis features an integrated 8-way backplane printed circuit board that acts as a shared communication matrix. It routes parallel power rails and data signals across eight distinct slot keys, preserving uniform bus parameters and signal velocity without skewing transmission states between operational nodes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Access Termination and Isolation Boundaries:\u003c\/strong\u003e The mechanical layout enforces strict physical separation via its rear access terminal blocks. Field sensor loops and power drops connect directly to the back of the rack framework, establishing clear fault boundaries that maximize channel-to-channel isolation metrics and prevent front-panel adjustments from exposing raw field electrical lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the main design difference between a rear access rack and a front access rack in the 05701 series?\u003c\/p\u003e\n\u003cp\u003eA: The 05701-A-0512 rear access variant requires all field-side sensor lines, loop power feeds, and relay contacts to terminate at the back plane of the sub-rack assembly. This setup leaves the front panel completely unobstructed for card hot-swapping, diagnostic visual sweeps, and interrogation tool connections.\u003c\/p\u003e\n\u003cp\u003eQ: Can an 8-way sub-rack be expanded to accommodate more than 8 control cards?\u003c\/p\u003e\n\u003cp\u003eA: The physical frame configuration of this model is fixed at 8 slot positions. To expand channel capacity, supplementary 05701 series sub-racks must be mounted in tandem and interconnected via factory-specified high-density rib cables to bridge the parallel backplane buses.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Layout Alignment, Clearance Constraints, and Mechanical Seating:\u003c\/strong\u003e Bolt the 2.20 lbs chassis frame directly onto the standard cabinet mounting rails using specified rack screws. Check that the assembly is aligned square to prevent mechanical stress on the plug-in cards. Maintain a minimum 50 mm clearance perimeter above and below the rack boundaries to allow unrestricted vertical convective heat dissipation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Separation, Wireway Constraints, and Shield Grounding:\u003c\/strong\u003e Route all incoming field transmitter cables and DC power feeds into the rear terminals through separate low-voltage wireways isolated from high-current AC lines. Securely bond the structural metal chassis grounding stud to the primary enclosure copper earth bar using a heavy, low-resistance strap to shunt high-frequency switching noise safely away from the backplane lines.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":47901309796542,"sku":"05701-A-0512","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-01_15-11-48.png?v=1782894478","url":"https:\/\/www.autooiltech.com\/products\/honeywell-05701-a-0512-rear-access-rack-assembly","provider":"AutoOilTech Limited","version":"1.0","type":"link"}