{"product_id":"honeywell-05701-a-0502-system-57-rack-assembly","title":"Honeywell 05701-A-0502 System 57 Rack Assembly","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned to serve as the structural and electrical backbone for gas detection monitoring arrays, the \u003cstrong\u003eHoneywell 05701-A-0502\u003c\/strong\u003e houses and interconnects System 57 control cards within a centralized chassis. This \u003cstrong\u003ehalf 19-inch wide, 6U high sub-rack assembly\u003c\/strong\u003e features integrated backplane wiring to distribute operational power and channel routing from field-installed sensors to individual gas detection modules. Engineered for safety-critical environments, the system features a dedicated \u003cstrong\u003eengineering card\u003c\/strong\u003e and a \u003cstrong\u003eDC input card\u003c\/strong\u003e to guarantee stable, low-noise power distribution across all populated channels. The front field wiring design minimizes installation footprint while streamlining diagnostic access for field engineers.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eRobust Chassis Architecture:\u003c\/strong\u003e Heavy-duty half 19-inch sub-rack frame, standing 6U high, built for standard industrial enclosure mounting.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eIntegrated Power Regulation:\u003c\/strong\u003e Pre-fitted with a high-integrity DC input card to regulate power and prevent voltage transients.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eFront-Access Optimization:\u003c\/strong\u003e Specifically configured for front field wiring, allowing simple physical card swaps and test probe troubleshooting.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003ePre-calibrated Interconnects:\u003c\/strong\u003e Includes a factory-tested interconnecting cable and key kit to prevent mechanical card misalignment during high-density installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eRefineries and offshore petrochemical exploration platforms.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eWastewater treatment facility gas monitoring control panels.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eIndustrial manufacturing plants requiring multi-channel toxic and combustible gas tracking.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eHazardous area control rooms utilizing Sieger System 57 configurations.\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    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003cth style=\"text-align: left; padding: 0.75rem; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 0.75rem; font-weight: bold;\"\u003eSpecification Value\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eHoneywell Analytics (Sieger)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e05701-A-0502\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eSeries Compatibility\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSystem 57 Gas Detection Control Modules\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eForm Factor\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eHalf 19-inch wide, 6U high\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eWiring Connection Location\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eFront field wiring\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eIncluded Base Components\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSub-rack, Engineering Card, DC Input Card, Key kit, Interconnecting cable\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2.8 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e4.0 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eDimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e240 mm x 270 mm x 266 mm\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 style=\"color: #1a365d; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe 05701-A-0502 half-rack assembly is optimized for localized applications running fewer than 8 channels. For higher capacity configurations, engineers must transition to the full 19-inch, 16-channel rack variant (05701-A-0301). Always verify that legacy System 57 cards use compatible backplane terminal adapters before hot-swapping modules inside this chassis.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #1a365d; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eA common issue in compact, unventilated enclosures is heat accumulation from fully loaded quad-channel cards. Ensure there is at least 50mm of clearance above and below the 6U rack boundaries to facilitate convection cooling. Avoid running heavy sensor supply lines alongside high-voltage AC mains wiring in the same conduit, as the System 57 DC input card's integrated filters are sensitive to major electromagnetic induction loops.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #1a365d; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen wiring the front panel connections, verify that the master ground stud on the backplane is bonded directly to the instrument clean earth. Failure to establish a low-impedance grounding pathway can cause measurement drift on 4-20mA catalytic and toxic sensor loops plugged into the backplane.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"margin: 0; font-weight: bold; color: #9b2c2c;\"\u003eCRITICAL WARNING:\u003c\/p\u003e\n  \u003cp style=\"margin: 0.5rem 0 0 0; color: #2d3748;\"\u003eIsolate and de-energize all primary DC and auxiliary power loops before mounting or inserting cards into the rack. Working on an energized rack backplane can cause transient damage to the sensitive operational amplifiers on adjacent gas monitoring modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; font-weight: bold; margin-right: 10px; font-size: 14px; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"margin: 0; color: #2d3748;\"\u003eSecurely mount the 05701-A-0502 sub-rack assembly into the enclosure frame or panel cutout using M6 industrial-grade hardware.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; font-weight: bold; margin-right: 10px; font-size: 14px; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"margin: 0; color: #2d3748;\"\u003eTerminate the main instrument safety earth cable to the dedicated chassis grounding stud on the sub-rack.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; font-weight: bold; margin-right: 10px; font-size: 14px; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"margin: 0; color: #2d3748;\"\u003eConnect the pre-terminated interconnecting cable between the engineering card and the main internal bus connection points.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cdiv style=\"display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; font-weight: bold; margin-right: 10px; font-size: 14px; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"margin: 0; color: #2d3748;\"\u003eCarefully verify slot alignment parameters using the physical key kit prior to sliding any active controller modules into the system backplane.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52705311752555,"sku":"05701-A-0502","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/05701-a-0502-mkfvu2ui5em_3432a199-4668-471e-9edf-99d50192d788.jpg?v=1766639528","url":"https:\/\/www.plcprotech.com\/products\/honeywell-05701-a-0502-system-57-rack-assembly","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}