05701-A-0511 is a 19-inch wide, 3U high rear-access rack from Honeywell System 57 series, specially designed for industrial fire detection systems. It is suitable for scenarios requiring field wiring connection from the rear of the rack. The rack can accommodate 17 card slots, supporting the installation of 15 four-channel control cards, 1 fire status panel, and 1 engineering card. Used in conjunction with a DC input card and relay interface card, it enables centralized monitoring and management of fire detectors.
Technical Specifications
Dimensions: 19 inches wide × 3U high, with a depth adapted for standard cabinet installation.
Card Slot Configuration: 17 card slots, including 15 control card slots, 1 fire status panel slot, and 1 engineering card slot.
Access Mode: Supports rear-field wiring access, with signal routing realized via a printed circuit board backplane.
Compatibility: Compatible with control cards such as 5704F, 5704, and 5701, allowing mixed installation of fire and gas detection cards.
Main Features and Advantages
High-Density Integration: A single rack supports up to 60 fire detection loops in the standard 19-inch 3U format, or 28 loops in the half 19-inch 6U format, saving space.
Flexible Configuration: The relay interface card can be expanded to 16 relay outputs, meeting complex alarm logic requirements.
Safety Design: Equipped with fault monitoring, earth leakage detection, and EMC compliance to ensure stable system operation.
Convenient Maintenance: Control cards can be hot-swapped without affecting other circuits, reducing maintenance costs.
Technical Parameters
Power Supply: Connected via a DC input card to a 21-32V DC power source, supporting individual power supply to avoid backplane current overload (maximum 8A).
Signal Processing: Each four-channel control card supports 4 detection loops, with an input current range of 0-50mA, capable of identifying open circuit, normal, fire alarm, and short circuit states.
Output Capacity: Standard configuration with 6 relay outputs, expandable to 16 outputs. Contact rating: 5A/250V AC (non-inductive load).
Application Areas
Industrial Safety Monitoring: Suitable for scenarios requiring centralized fire detection in petrochemical, data centers, manufacturing, etc.
Large Facilities: Can be integrated into building automation systems to 联动 (interlock) with smoke, flame, and temperature detectors.
Hazardous Environments: Although not explosion-proof designed, supports Intrinsic Safety (IS) barrier access, suitable for partial safe areas.
Installation and Maintenance
Installation Requirements: Must be fixed in a well-ventilated indoor environment, protected from rain and moisture, and comply with standards such as BS 5839 and NFPA 72.
Maintenance Key Points: Regularly inspect power voltage, relay status, and loop resistance. Use the Engineering Card for configuration and diagnostics.
Fault Handling: Identify faults via the Fire Status Panel and control card LED indicators. Support remote reset and silence functions.
Supporting Products
Control Cards: 5704F Fire Control Card (05704-A-0146), 5701 Gas Control Card.
Interface Cards: Hex Relay Interface Card (05704-A-0123), Relay Interface Assembly (05704-A-0133).
Panels and Engineering Card: Fire Status Panel (05704-A-0148), Engineering Card (05701-A-0361).
Power Supplies: 8/16-way AC-DC Power Supply Units (05701-A-0405/0406), supporting power upgrade to 200W.
Components Included in Sub-Rack
Core Components: Engineering Card, DC Input Card, backplane, Relay Interface Card (requires separate configuration).
Optional Accessories: Fire Status Panel, Expansion Relay Card, Power Supply Unit, Interconnecting Cable (applicable for front-access racks).
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