The Honeywell Sieger 05701-A-0302 is a high-performance Single Channel Control Card belonging to the renowned System 57 gas detection family. This module is designed to interface with a single gas detector, providing constant monitoring, local display of gas concentrations, and alarm activation. It acts as the “brain” for an individual sensing point within a larger rack-mounted system. The 05701-A-0302 is specifically engineered for flammable gas detection (catalytic bead or infrared) or toxic gas/oxygen sensors, offering a versatile solution for industrial safety monitoring.
Technical Specifications
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Model Number: 05701-A-0302
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Series: Sieger System 57
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Manufacturer: Honeywell / Sieger
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Input Type: 4-20mA, Bridge (Catalytic), or Electrochemical
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Display: Multi-segment backlit LCD with bar graph
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Alarm Levels: 3 User-programmable alarm levels (A1, A2, A3)
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Output: 4-20mA isolated analog output
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Relay Contacts: 3 Alarm relays and 1 fault relay (SPDT)
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Dimensions: 17.0 cm x 2.5 cm x 11.0 cm
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Weight: 0.35 kg
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Country of Origin: United Kingdom
Applications
This control card is widely deployed in hazardous environments such as offshore oil platforms, chemical processing plants, and underground parking garages. It is the primary interface for detecting combustible leaks (LEL), oxygen depletion, or toxic gas accumulation (e.g., H2S or CO). Because of its modular “single channel” design, it allows operators to scale their gas detection system from a single point to dozens of channels within a standard 19-inch rack.
Operating Instructions
The 05701-A-0302 should be plugged into a System 57 drive card or backplane slot within a powered rack. Before applying power, ensure the sensor type selection jumpers on the side of the card match the detector being used (e.g., 4-20mA vs. Catalytic Bridge). Once inserted, use the front panel buttons or a handheld interrogator to perform a zero and span calibration. It is critical to set the alarm thresholds according to local safety regulations. For flammable gas applications, ensure the “Inhibit” function is used during maintenance to prevent false alarms or accidental equipment shutdowns.
Frequently Asked Questions
Q: What does the “A” in the part number signify? A: In the 5701 series, the “A” designation typically refers to the standard analog version of the control card, optimized for direct interface with the wide range of Sieger sensors and third-party transmitters.
Q: Can I use this card for both toxic and flammable gases? A: Yes, the 05701-A-0302 is versatile. By adjusting the internal jumpers and software configuration, it can be set to “Catalytic” mode for flammable gases or “mA” mode for toxic gas transmitters.
Q: My card is showing a “Fault” light; what is the first step? A: Check the sensor wiring first. A fault light often indicates an open circuit or a short circuit in the field wiring to the detector. If the wiring is intact, verify that the input current is within the expected 4-20mA range.
Recommended Similar Models
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Honeywell 05704-A-0121 (4-Channel Control Card)
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Honeywell 05701-A-0301 (Standard Control Card Variant)
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Honeywell Sensepoint XCD (Gas Transmitter)
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Honeywell 05701-A-0325 (High-Spec Control Card)
