Introduction to HONEYWELL 05704-A-0121
05704-A-0121 Product Overview
The HONEYWELL 05704-A-0121 is a high-reliability quad relay interface card belonging to the System 57 product family, specifically engineered for seamless integration between digital control systems and relay-based outputs. As a critical interface component in industrial automation setups, it provides four independent Single Pole Double Throw (SPDT) relay channels to control external devices such as pumps, valves, and alarms. Equipped with optically isolated inputs to prevent cross-channel interference and a robust structural design, this card maintains stable and reliable operation in demanding industrial environments. It is widely applied in fire and gas detection panels, alarm management systems, and process safety setups, working in tandem with Honeywell’s control systems to enhance operational safety and system flexibility.
05704-A-0121 Technical Specifications
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Product Model: 05704-A-0121
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Product Type: Quad Relay Interface Card (System 57 Series)
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Core Functions: Digital control system-relay output integration, four independent relay control, cross-channel interference prevention via isolated inputs, configurable relay operation mode
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Relay Specifications: Number of relays: 4 independent SPDT (Single Pole Double Throw) relays; Contact rating: 5A at 250VAC or 32VDC (non-inductive load); Switching capacity: 250VA; Contact life: 100,000 operations
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Power Supply: Operating voltage: 24VDC; Input current: 25mA; Power consumption: Typical 3.5W, Maximum 6.5W
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Environmental Ratings: Operating temperature: -20°C to +70°C; Storage temperature: -25°C to +70°C; Relative humidity: 0% – 99% (non-condensing)
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Mechanical & Installation: Mounting type: 3U sub-rack module (compatible with standard 19-inch racks); Dimensions (L×W×H): 133mm × 160mm × 35mm; Net weight: Approx. 0.45kg; Field terminal: 2.5mm² (14 AWG)
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Key Features: Optically isolated inputs; Relay operation mode: Configurable as latching or non-latching; Easy integration with Honeywell System 57 racks
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Certifications: CE compliant; UL listed for industrial applications
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Compatibility: Seamlessly integrates with Honeywell System 57 control systems; Compatible with various industrial controllers, sensors, and actuators
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Applications: Fire and gas detection panels, alarm management systems, process safety systems, industrial automation control setups, pump/valve control systems, marine automation
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