{"product_id":"honeywell-05701-a-0351-system-57-single-channel-control-card","title":"Honeywell 05701-A-0351 System 57 Single Channel Control Card","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eMonitoring critical gas detection sensor loops within industrial processing environments is the primary role of the \u003cstrong\u003eHoneywell 05701-A-0351\u003c\/strong\u003e single-channel control card, a core component of the legacy Zellweger\/Honeywell Analytics System 57 control architecture. This rack-mounted module interfaces directly with catalytic bead flammable gas sensors or standard 2-wire\/3-wire 4-20mA transmitters. Designed to occupy a single slot in standard System 57 rack enclosures, the \u003cstrong\u003e05701-A-0351\u003c\/strong\u003e processes incoming sensor analog signals, drives local multi-segment status displays, and controls dedicated alarm and fault relays to safeguard personnel and plant infrastructure.\u003c\/p\u003e\n\n\u003ch3\u003eKey Technical Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Sensor Compatibility:\u003c\/strong\u003e User-configurable to accept inputs from either low-power catalytic bridge gas sensors or industrial 4-20mA analog transmitters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLocal Visual Diagnostics:\u003c\/strong\u003e Integrated 3-character LCD panel displays real-time gas concentration measurements alongside dedicated LED status indicators for Alarm 1, Alarm 2, Alarm 3, and Fault conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Signal Outputs:\u003c\/strong\u003e Generates a continuous 4-20mA analog output signal mapped to the measured concentration for integration with distributed control systems (DCS) or PLC analog inputs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfigurable Relays:\u003c\/strong\u003e Equipped with SPCO (Single Pole Change Over) relays for local alarm signaling, voting logic configuration, and automated process shutdown initiation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnetic Front-Panel Operation:\u003c\/strong\u003e Allows on-site calibration, parameter interrogation, and alarm reset procedures to be conducted via a magnetic wand without exposing internal electronics to the environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil \u0026amp; Gas Facilities:\u003c\/strong\u003e Real-time monitoring of combustible and toxic gases in onshore production terminals, offshore platforms, and refinery process areas.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical Processing:\u003c\/strong\u003e Early warning gas leak detection around chemical storage areas and raw ingredient processing vessels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater and Wastewater Treatment:\u003c\/strong\u003e Monitoring for hazardous atmospheres, methane generation, and oxygen depletion in wet wells, enclosed dry wells, and valve vaults.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Generation:\u003c\/strong\u003e Detection of turbine fuel leaks and hydrogen cooling gas leaks in power plant machinery spaces.\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;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold; width: 35%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eHoneywell \/ Zellweger Analytics\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel Part Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e05701-A-0351\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eSystem Series\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSystem 57 (5701)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eChannel Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSingle Channel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Range Selection\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCatalytic bridge sensor (constant current drive) or 4-20mA (sink\/source)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Voltage Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e18V to 32V DC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eTypical Power Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3.75 Watts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eElectronic Temperature Drift\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eLess than +\/- 2% of span over operating range\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eAlarm Relays\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eThree alarm levels plus dedicated Fault relay; SPCO contacts rated 5A at 250V AC \/ 30V DC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eDisplay Interface\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3-digit liquid crystal display (LCD) with backlight and discrete status LEDs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e-5 degC to +55 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2.0 kg (including secure export protection packaging)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eNet Unit Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0.165 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e25.0 cm x 18.0 cm x 10.0 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold; width: 30%;\"\u003eBackplane Connection Path\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eSignal \/ Circuit Function\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: 8px;\"\u003eDC Power Input\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e+24V DC Field Power Supply \u0026amp; Common Return (0V)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCatalytic Sensor Terminal\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3-Wire catalytic bridge drive (NS, S, CC lines) with adjustable drive current\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eAnalog Input (Transmitter)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eStandard 4-20mA current loop input (configured for active or passive transmitter loop)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eAnalog Output (Isolated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e4-20mA system repeat signal for external data loggers, DCS, or safety PLCs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eRelay Interfaces\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCommon, Normally Open (NO), and Normally Closed (NC) contacts for A1, A2, A3, and Fault states\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\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe \u003cstrong\u003e05701-A-0351\u003c\/strong\u003e serves as a direct replacement module within any Honeywell System 57 rack enclosure. If migrating from older legacy Zellweger control cards, ensure the backplane module (05701-A-0352 or similar) matches the pin footprint of this specific hardware revision. Note that while this is a single-channel card, it cannot be hot-swapped into slots assigned to multi-channel 5704 cards without reconfiguring backplane terminal jumpers and rack layout allocations.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen configuring the \u003cstrong\u003e05701-A-0351\u003c\/strong\u003e for catalytic bridge sensors, precise adjustment of the bridge drive current is critical. Setting the drive current even slightly above the sensor's specified limit can permanently burn out the catalytic bead active elements. Always cross-reference the sensor's technical sheet before setting the potentiometer value. In high-density 19-inch rack installations, ensure that cooling fan units are operational; internal card temperatures can rise rapidly when multiple single-channel cards are powered simultaneously, leading to accelerated component aging and thermal drift issues.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Calibration Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDuring zero and span calibration, use the magnetic wand systematically to cycle the front-panel reed switches. Always verify that the control card has run through its thermal stabilization routine (minimum 30 minutes from cold start) before finalizing zero\/span values. To prevent accidental trigger-offs of safety mitigation systems (e.g., deluge or ventilation paths), ensure the card's inhibit mode is fully active. The local LCD will flash an \"Inhibit\" or \"INH\" warning status to confirm that the output relays are blocked during testing.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation and Safety Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING: SAFETY FIRST\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-size: 0.95rem;\"\u003eDo not extract or insert this control card while the System 57 rack is powered. Live insertion (hot-plugging) can cause transient electrical arcs on the edge connectors, potentially corrupting EEPROM calibration data or damaging the sensitive catalytic bridge circuitry. Verify that the power isolation switch for the relevant rack segment is in the OFF position and that all residual field circuit capacitance has been discharged prior to hardware servicing.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv 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    \u003cp style=\"color: #2d3748; margin: 0;\"\u003e\u003cstrong\u003eIsolate Field Power:\u003c\/strong\u003e Turn off the primary +24V DC supply feeding the target System 57 rack panel. Tag out the circuit breaker to prevent accidental re-energization during maintenance.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv 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    \u003cp style=\"color: #2d3748; margin: 0;\"\u003e\u003cstrong\u003eCard Alignment:\u003c\/strong\u003e Align the upper and lower edges of the 05701-A-0351 PCB with the plastic card guides inside the target rack slot. Ensure the card is oriented correctly with the front panel display facing outward.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv 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    \u003cp style=\"color: #2d3748; margin: 0;\"\u003e\u003cstrong\u003eSecure Insertion:\u003c\/strong\u003e Gently push the card back until the DIN edge connector mates firmly with the backplane socket. Secure the front panel mounting screws to prevent mechanical vibration from loosening the card.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv 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    \u003cp style=\"color: #2d3748; margin: 0;\"\u003e\u003cstrong\u003eSensor Parameter Verification:\u003c\/strong\u003e Before applying full load power, verify that the configuration jumpers on the rear backplane correctly match the connected sensor type (catalytic bridge versus 4-20mA loop configuration).\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52705305919851,"sku":"05701-A-0351","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/05701-a-0351-cusq5u3ouja_95c49d60-60d7-4694-a8be-c0595ae94ed5.jpg?v=1766639363","url":"https:\/\/www.plcprotech.com\/id\/products\/honeywell-05701-a-0351-system-57-single-channel-control-card","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}