The Honeywell 05701-A-0301 Single Channel Control Card is a 4–20 mA gas detection control module designed for the Honeywell System 57 Gas Detection Controller. It provides control, display, alarm processing, and diagnostic functions for a single gas detection channel. The card processes signals from the connected sensor drive module, displays gas concentration values, compares measurements against configured alarm limits, and activates alarm outputs when thresholds are exceeded.

Contents

• 1. Product Overview
• 2. Main Features
• 3. Typical Applications
• 4. Installation Preparation
• 5. Control Card Installation
• 6. Field 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-0301 is a Single Channel Control Card configured for 4–20 mA gas detector inputs in the System 57 platform. The card works together with a compatible 4–20 mA Sensor Drive Module, such as the 05701-A-0283, to provide a complete gas detection channel. It processes sensor signals, displays gas readings, manages alarm thresholds, and communicates alarm status with other system cards.

Main Features

• Single-channel gas detection control
• Compatible with 4–20 mA transmitters
• Microprocessor-based operation
• Front-panel gas concentration display
• Configurable alarm limits
• Fault monitoring and diagnostics
• EEPROM-stored configuration parameters
• Supports optional analogue output modules

Typical Applications

• Oil and gas facilities
• Petrochemical plants
• Refineries
• Chemical processing plants
• Offshore platforms
• Power generation facilities
• Industrial gas monitoring systems
• Hazardous area safety monitoring

Installation Preparation

• Verify the model number: 05701-A-0301.
• Confirm compatibility with the System 57 controller rack.
• Check the required 4–20 mA sensor configuration.
• Disconnect system power before installation.
• Wear ESD protection equipment.
• Inspect connectors and terminals.
• Prepare sensor calibration information.

Control Card Installation

1. Switch off power to the System 57 controller.
2. Remove the protective panel if required.
3. Align the 05701-A-0301 card with the assigned slot.
4. Insert the card carefully into the rack connector.
5. Ensure the card is fully seated.
6. Secure the retaining mechanism.
7. Restore system power.

Field Wiring Connection

• Connect the compatible 4–20 mA sensor loop.
• Verify +24 VDC sensor supply connections.
• Check signal polarity.
• Connect cable shielding correctly.
• Verify grounding arrangement.
• Inspect terminal tightness.

System Configuration

• Select the correct gas detector type.
• Configure alarm levels.
• Set measurement range.
• Verify sensor input scaling.
• Configure fault monitoring parameters.
• Save configuration settings.

Commissioning Procedure

INSTALL CONTROL CARD
VERIFY SENSOR CONNECTIONS
CHECK POWER SUPPLY
START SYSTEM
VERIFY GAS DISPLAY
TEST ALARM FUNCTIONS
CALIBRATE SENSOR
CONFIRM NORMAL OPERATION

Functional Verification

• Confirm gas concentration display is correct.
• Verify 4–20 mA signal response.
• Test alarm activation points.
• Check fault indication.
• Verify relay outputs if installed.
• Confirm stable operation.

Preventive Maintenance

• Inspect card connectors periodically.
• Review alarm history.
• Verify sensor calibration schedules.
• Check field wiring condition.
• Inspect power supply stability.
• Perform regular gas response testing.

Practical Installation Case

A refinery upgraded an existing System 57 gas monitoring cabinet by replacing an outdated control channel with a Honeywell 05701-A-0301 Single Channel Control Card. Engineers installed the card, connected the existing 4–20 mA gas transmitter, configured alarm thresholds, and completed calibration testing. After commissioning, the channel displayed accurate gas readings and successfully activated alarm outputs during functional testing.

Frequently Asked Questions

What is the function of the Honeywell 05701-A-0301?

The 05701-A-0301 processes signals from a single 4–20 mA gas detector channel, displays gas measurements, manages alarms, and performs system diagnostics.

What sensor module is normally used with the 05701-A-0301?

The card is normally fitted with a compatible plug-in Sensor Drive Module. For 4–20 mA applications, the 05701-A-0283 Sensor Drive Module is commonly used.

Can the card be installed with power applied?

No. Always remove system power before installing or removing the control card to prevent damage and ensure safe maintenance procedures.

Summary

The Honeywell 05701-A-0301 Single Channel Control Card provides reliable gas detection monitoring, alarm management, and diagnostic processing for Honeywell System 57 safety systems. Correct installation, sensor configuration, calibration, and commissioning ensure accurate gas measurement and dependable industrial safety operation.