Description
The Honeywell 05701-A-0502 is an interface component for the System 57 gas detection rack. It functions as the backplane interface or “Engineering Card” (depending on specific rack density) that facilitates the connection between individual control cards and the common rack power, alarms, and communication lines.
Product Parameters (Datasheet)
- Model Number: 05701-A-0502
- Series: System 57
- Component Type: Rack Interface / Engineering Interface Card
- System Capacity: Compatible with 19-inch racks (up to 16 channels) or half-racks (up to 8 channels)
- Operating Voltage: 24 V DC (System nominal)
- Communication Interface: Common RS-485 internal bus support
- Alarm Outputs: Common relay interfaces (Master Alarm/Fault)
- Operating Temperature: -5°C to +55°C
- Storage Temperature: -20°C to +70°C
HONEYWELL 05701-A-0502
HONEYWELL 05701-A-0502
HONEYWELL 05701-A-0502
Country of Origin
This modular rack component is engineered and manufactured by Honeywell Analytics in the United Kingdom.
Application Fields
The 05701-A-0502 is a structural and electronic necessity for organized gas detection layouts:
- Central Control Rooms: Used in large 19-inch racks to consolidate gas monitoring for an entire facility.
- Offshore Oil Rigs: Providing a high-density, vibration-resistant housing for multiple flammable and toxic gas channels.
- Refineries: Managing fenceline monitoring systems where multiple sensor inputs must be centralized.
- Laboratory Complexes: Protecting personnel by monitoring various specialty gases in a single compact rack.
Product Usage Instructions
- Rack Installation: Secure the 05701-A-0502 into the designated master or interface slot of the System 57 rack frame. Ensure the guide rails are properly aligned to prevent pin damage.
- Backplane Connection: Once seated, the card links the individual 05701 control cards to the common Master Alarm and Master Fault relays.
- Power Distribution: Ensure the DC power supply feeding the rack is correctly wired to the terminals on the backplane associated with this interface card.
- Common Reset: This card typically facilitates the “Global Reset” function, allowing an operator to acknowledge alarms across all cards in the rack simultaneously.
- Expansion: If daisy-chaining multiple racks, ensure the communication cables are properly terminated at the 05701-A-0502 interface point.
Product Technical Description
The 05701-A-0502 serves as the “nervous system” of the System 57 rack. While individual control cards (like the 05701-A-0302) process data for specific sensors, the 0502 interface card manages the shared resources. It monitors the power health of the entire rack and provides a centralized point for the Master Fault relay, which trips if any single card in the rack fails. Technically, it ensures that the “Common Alarm” logic is maintained; for example, if any sensor reaches a Level 1 alarm, the common A1 relay on this interface card will activate, allowing for a single siren or beacon to serve the entire rack.
Q&A (Common Questions)
Q: Is this card a gas measurement card? A: No. It is an interface/engineering card. It does not connect directly to a sensor; instead, it coordinates the control cards that do.
Q: Can I use this in a 5704 series four-channel rack? A: The 0502 series is generally intended for the standard System 57 architecture. Always verify the compatibility of the backplane part number with the specific chassis model.
Q: Does this card have its own display? A: Typically, the 0502 interface card does not have a gas concentration display. Displays are located on the individual 05701 control cards.
Q: What should I do if the “Master Fault” LED on this card is lit? A: Check the individual channel cards. The 0502 master fault usually triggers because one of the control cards has detected a sensor failure or has been removed from the rack.
Similar Model Recommendations
- Honeywell 05701-A-0302 (Single-channel control card)
- Honeywell 05701-A-0406 (System 57 Power Supply)
- Honeywell 05701-A-0322 (Modbus Interface Card)
- Honeywell 05704-A-0144 (Four-channel control card)
- Honeywell 05701-A-0501 (Earlier revision of the interface card)
For further technical details or to request a quote for the Honeywell 05701-A-0502, please contact our technical sales team.
