05701-A-0302 Honeywell Single Channel Catalytic Control Card

Global PLC Spare HUB's Insight

• The Honeywell 05701-A-0302 is a critical safety module for dedicated catalytic gas monitoring.
• It features a unique 4-part LCD that provides both digital precision and analogue trend visualization on the front panel.
• Engineered for the System 57 rack, it offers decentralized control to prevent total system failure during gas leaks.
• Maintenance professionals prefer the 05701-A-0302 for its tactile buttons and clear alarm status LEDs.

Technical Specifications

• Brand: Honeywell
• Model Number: 05701-A-0302
• Module Type: Single Channel Catalytic Control Card
• Display: 25-segment Analogue Bar Graph & 4-Character Digital LCD
• Alarm Levels: A1, A2, and A3 (Individual LED Indicators)
• Power Supply: 18V to 32V DC
• Consumption: 3.75W Typical (Includes Sensor Power)
• Drift: < ±2% per 6-month period
• Resolution: 1% FSD Alarm Setting Steps
• Weight: 0.165 Kg
• Form Factor: Standard System 57 Rack Card (17cm x 2.5cm x 11.2cm)

Diagnostic and Safety Features

• Real-time Fault Detection: Dedicated Fault LED for sensor failure or loop issues.
• Calibration Inhibit: Front-panel inhibit button for safe sensor maintenance without false alarms.
• Message Display: 4-character section for clear error messages and status icons.
• Tactile Control: Push-button for Alarm Reset and Card Selection for configuration.

Shipping and Warranty

• Logistic Carriers: Global delivery via FedEx, UPS, or DHL.
• Lead Time: Fast dispatch within 24-48 hours from stock.
• Guarantee: 12-Month full industrial warranty included.
• Packaging: Shipped in high-grade anti-static shielding for electronics protection.

Frequently Asked Questions (FAQ)

• Is the 05701-A-0302 compatible with 4-20mA sensors? No, this specific model is designed for direct catalytic bridge sensors; use the 05701-A-0301 for 4-20mA signals.
• How do I adjust the alarm setpoints? Setpoints are adjusted via the front panel push-buttons in 1% FSD increments using the "Card Select" mode.
• Does the card monitor its own internal health? Yes, the electronic drift is monitored and internal faults are signaled via the Fault LED.
• Can I use this card in an offshore environment? Based on engineering experience, these cards are widely used in offshore F&G systems when housed in a NEMA-rated enclosure.
• What happens if the DC supply drops below 18V? The module will likely trigger a Fault LED status as the power rail falls outside of the stable operating window.

Selection and Purchasing Guide

• Verify that your target gas is combustible and requires a catalytic bead sensor.
• Ensure your System 57 rack has an available slot and the correct termination block for catalytic inputs.
• Calculate total rack power consumption to ensure your power supply handles the 3.75W per card.
• Contact us for technical support regarding migration from older 5700 series modules.

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