The HONEYWELL 05701-A-0302 Single Channel Control Card is one of the core components of the System 57 series control system. Specifically designed for catalytic gas sensors, it integrates functions such as gas detection signal processing, alarm triggering, and status display. Adopting a 3U card-type structure, the 05701-A-0302 Control Card is compatible with 19-inch standard racks or half-19-inch racks for installation, supporting front or rear wiring methods. It is widely used in the detection and monitoring of target gases such as combustible gases in industrial scenarios, providing a reliable signal acquisition and control solution for industrial safety.
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Core Functions and Features
- Signal Processing and Compatibility: Equipped with a catalytic sensor drive module (Model: 05701-A-0284), it supports catalytic bridge input signals. It can accurately process gas concentration-related signals output by sensors and is compatible with various industrial catalytic gas detectors.
- Multi-dimensional Alarm Mechanism: Supports three-level gas concentration alarms (A1, A2, A3), as well as STEL (Short-Term Exposure Limit) alarm, LTEL (Long-Term Exposure Limit) alarm, and Rate alarm (2Vx version software only). Alarm thresholds can be flexibly configured via the Engineering Card to meet different safety level requirements.
- Status Display and Operation: Features a four-part liquid crystal display, including an analog bar graph, digital display, message display, and icon display, which can real-time show gas concentration, alarm status, fault information, etc. The front panel is equipped with A1/A2/A3 alarm indicator lights, a FAULT light, an INHIBIT light, and a Reset/Select button for easy operation.
- High-Reliability Design: Supports single-channel independent operation mode; the control card can be removed and replaced individually without affecting the wiring of other channels. It has a self-validation function that can perform self-verification on circuit components, software operation, and sensor status, and feedback faults in a timely manner.
- Expansion and Compatibility: Can be paired with an optional Analog Output Module (05701-A-0285) to provide 0-20mA or 4-20mA isolated monitor output, compatible with external devices such as recorders. It is compatible with components of the System 57 series, such as Engineering Cards and Relay Cards, and supports complex alarm logics including Master Alarm, Zoned Alarm, and Voted Alarm.
Technical Specifications
- Power Supply Requirements: Input voltage range 18V-32V DC, typical power consumption 3.75W (including catalytic sensor drive).
- Display Accuracy: Alarm setpoint resolution is 1% of full scale; both linearity and repeatability are ±1% of full scale.
- Physical Specifications: Dimensions are 112mm (height) × 25mm (width) × 170mm (depth), weight 165g, complying with 3U card-type installation standards.
Environmental Adaptability: Operating temperature range -5°C to +55°C (0°C to +55°C for ATEX-certified systems), relative humidity 0-90% (non-condensing).
Wiring Specifications: Supports single-strand or multi-strand wires up to 2.5mm²; connection to on-site sensors is achieved through supporting Field Interface Cards or Relay Cards.
Key Points for Installation and Configuration
- Installation Compatibility: Can be installed in 19-inch (3U/6U high) or half-19-inch (3U/6U high) racks, supporting front or rear on-site wiring. It must be used with corresponding racks (such as 05701-A-0511, 05701-A-0502, etc.).
- Drive Module Configuration: Pre-installed with a catalytic sensor drive module at the factory. The module is equipped with 3 solder links (LK1-LK3) for setting the bridge current range (4 gears from 70mA to 283mA). It must be matched according to sensor requirements and shall not be modified arbitrarily.
- Wiring Requirements: Connected to catalytic sensors via Field Interface Cards or Relay Cards. Sensors require three-wire wiring (S, 01, NS), and cables must be shielded to meet RFI/EMC standards and avoid interference.
- Calibration and Maintenance: Zero calibration, span calibration (including first-time span calibration), and sensor bridge current adjustment must be performed via the Engineering Card (05701-A-0361). The calibration cycle must comply with on-site specifications and EN 60079-29-2 standard.
Application Scenarios and Supporting Components
- Typical Applications: Suitable for industrial sites such as petrochemical, metallurgy, electric power, and warehousing. It is used to detect the concentration of combustible gases such as methane and propane, and achieves safety monitoring with catalytic gas sensors.
- Supporting Components: Must be used with supporting components of the System 57 series, including Engineering Cards (for configuration and calibration), Field Interface Cards (05701-A-0326) or Relay Cards (such as Double SPCO Relay Card 05701-A-0327, High Integrity Relay Card 05701-A-0330, etc.), and AC-DC power modules, to form a complete gas detection and control system.
Related Models
Honeywell Analytics Engineering Card - 05701-A-0361: may relate to configuration or management systems.
Honeywell Analytics DC Input Card - 05701-A-0325: another input option for the system.
Honeywell Analytics Single Channel Control Card, 4-20mA - 05701-A-0301: Similar to 0302 but designed for 4-20mA input.
Honeywell Analytics Control Card, Single Channel, 5701 - 05701-A-0351: Another single channel control card variant.
Honeywell Analytics Sensor Driver Module: Includes 4-20mA (05701-A-0283) and Catalytic (05701-A-0284) versions.
Honeywell Analytics Analog Output Module, 5701 - 05701-A-0285: for outputting analog signals.
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