The Honeywell 05701-A-0302 Single Channel Control Card Catalytic is a catalytic gas detection control module designed for the Honeywell System 57 Gas Detection Controller. It provides signal processing, gas concentration display, alarm management, and fault monitoring for catalytic bead gas detectors. The card works together with a catalytic sensor drive module to monitor combustible gas concentrations and provide reliable safety protection in industrial environments. The 05701-A-0302 is the catalytic version of the System 57 Single Channel Control Card, while the 05701-A-0301 is designed for 4–20 mA gas detector applications.

Contents

• 1. Product Overview
• 2. Main Features
• 3. Typical Applications
• 4. Installation Preparation
• 5. Control Card Installation
• 6. Sensor Wiring Connection
• 7. System Configuration
• 8. Commissioning Procedure
• 9. Functional Verification
• 10. Preventive Maintenance
• 11. Practical Installation Case
• 12. Frequently Asked Questions

Product Overview

The Honeywell 05701-A-0302 is a catalytic Single Channel Control Card used in the System 57 gas detection platform. It receives signals from catalytic gas sensor drive modules, processes gas concentration values, provides front-panel indication, controls alarm functions, and monitors channel faults. The card uses microprocessor-based control with configurable parameters stored in non-volatile memory, allowing adaptation to different gas detector requirements.

The module is typically installed in a System 57 rack together with compatible sensor drive modules and optional interface cards for alarm relay outputs and remote monitoring.

Main Features

• Catalytic gas detector control
• Single-channel monitoring capability
• Microprocessor-based signal processing
• Gas concentration display
• A1, A2, A3 alarm monitoring
• Fault and inhibit status indication
• Configurable alarm parameters
• EEPROM-stored configuration
• Compatible with Honeywell System 57 racks

Typical Applications

• Oil and gas facilities
• Petrochemical plants
• Refineries
• Gas storage areas
• Chemical processing plants
• Offshore platforms
• Power generation facilities
• Industrial combustible gas monitoring systems

Installation Preparation

• Verify the model number: 05701-A-0302.
• Confirm compatibility with Honeywell System 57 equipment.
• Check catalytic sensor requirements.
• Disconnect system power before installation.
• Wear ESD protection equipment.
• Inspect card connectors.
• Prepare sensor calibration documentation.

Control Card Installation

1. Switch off power to the System 57 controller.
2. Open the controller rack access panel.
3. Locate the assigned control card slot.
4. Align the 05701-A-0302 card with the rack connector.
5. Insert the card carefully until fully seated.
6. Secure the retaining mechanism.
7. Restore system power.
8. Check front-panel status indicators.

Sensor Wiring Connection

• Connect the catalytic sensor drive module.
• Verify sensor bridge wiring.
• Check detector polarity.
• Inspect cable shielding.
• Confirm grounding arrangement.
• Verify terminal tightness.

System Configuration

• Select the correct catalytic detector type.
• Configure gas measurement range.
• Set alarm thresholds.
• Configure fault monitoring parameters.
• Verify inhibit functions.
• Save configuration settings.

Commissioning Procedure

INSTALL CONTROL CARD
VERIFY SENSOR CONNECTIONS
CHECK POWER SUPPLY
START SYSTEM
VERIFY DISPLAY OPERATION
PERFORM ZERO CALIBRATION
PERFORM SPAN CALIBRATION
TEST ALARM FUNCTIONS
CONFIRM NORMAL OPERATION

Functional Verification

• Confirm gas concentration display.
• Verify sensor response.
• Perform calibration gas testing.
• Check A1/A2/A3 alarm operation.
• Verify fault indication.
• Confirm stable monitoring operation.

Preventive Maintenance

• Perform regular sensor calibration.
• Inspect card connectors.
• Review alarm history.
• Check catalytic sensor condition.
• Verify power supply stability.
• Perform periodic gas response testing.

Practical Installation Case

A refinery upgraded an existing combustible gas monitoring cabinet by installing Honeywell 05701-A-0302 Single Channel Control Cards for catalytic gas detectors. After installing the cards, connecting catalytic sensors, completing zero and span calibration, and testing alarm outputs, the gas detection channels successfully returned to service with accurate readings and reliable alarm operation.

Frequently Asked Questions

What is the function of the Honeywell 05701-A-0302?

The 05701-A-0302 provides control, display, alarm processing, and fault monitoring functions for catalytic gas detection channels in Honeywell System 57 controllers.

What is the difference between 05701-A-0301 and 05701-A-0302?

The 05701-A-0301 is designed for 4–20 mA gas detector applications, while the 05701-A-0302 is designed for catalytic gas detector applications.

Can the card be installed while power is applied?

No. System power should always be removed before installing or removing the control card to prevent equipment damage and ensure safe maintenance procedures.

Summary

The Honeywell 05701-A-0302 Single Channel Control Card Catalytic provides reliable combustible gas monitoring, alarm management, and diagnostic functions for Honeywell System 57 safety systems. Correct installation, sensor calibration, configuration, and commissioning ensure accurate gas detection and dependable industrial safety operation.