Honeywell 05701-A-0502 System 57 Interface Rack

Product Overview

The Honeywell 05701-A-0502 is an interface rack component for the System 57 gas detection platform. It functions as the backplane interface or "Engineering Card" that facilitates connection between individual control cards and common rack power, alarms, and communication lines.

Key Specifications

• Model Number: 05701-A-0502
• Series: Honeywell 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
• Origin: United Kingdom

Core Features

• High-density 19-inch rack configuration for up to 16 gas detection channels
• RS-485 internal bus for reliable inter-card communication
• Master alarm and fault relay outputs for centralized safety management
• Vibration-resistant construction for offshore and refinery applications

Applications

• Central control rooms for facility-wide gas monitoring
• Offshore oil rigs requiring high-density, vibration-resistant housing
• Refinery fenceline monitoring systems
• Laboratory complex specialty gas protection

FAQ

Q: What is the maximum channel capacity?
A: The 05701-A-0502 supports up to 16 channels in a full 19-inch rack or 8 channels in a half-rack configuration.

Q: Is this component compatible with other System 57 cards?
A: Yes, it is designed to interface with all System 57 control cards, relay cards, and sensor drive modules.

Installation Guide

1. Mount the rack in a vibration-free, environmentally controlled location.
2. Connect the 24 V DC power supply to the DC input card.
3. Install control cards and relay cards in the designated slots.
4. Wire field sensors to the appropriate field interface cards.
5. Verify RS-485 bus continuity across all installed cards.

Selection Tips

• Determine channel count (8-way vs. 16-way) before selecting rack size.
• Ensure adequate ventilation for operating temperature compliance.
• Plan for rear-access vs. front-access wiring based on cabinet layout.