Description
The Honeywell 05701-A-0329 is a high-specification Single-Channel Control Card from the System 57 gas detection series. It is designed to interface with a wide range of gas detectors and provides specialized control logic and alarm management for hazardous environments.
Product Parameters (Datasheet)
- Model Number: 05701-A-0329
- Series: Searchline 57 (Enhanced Control Card)
- Input Range: 4-20 mA DC (Current Loop)
- Display: 4-character high-brightness LED for concentration and status
- Alarm Levels: Three independent, field-programmable alarm levels (A1, A2, A3)
- Relay Outputs: * 3x Alarm Relays (SPCO)
- 1x Fault Relay (SPCO, normally energized)
- Relay Rating: 5A at 250V AC / 32V DC
- Operating Voltage: 18V to 32V DC
- Standard Features: Inhibit mode, peak reading memory, and non-intrusive calibration
- Rack Space: Occupies 1 slot in a standard System 57 rack
HONEYWELL 05701-A-0329
HONEYWELL 05701-A-0329
HONEYWELL 05701-A-0329
Country of Origin
This control module is engineered and manufactured by Honeywell Analytics in the United Kingdom.
Application Fields
The 05701-A-0329 is used in high-integrity safety systems across several industries:
- Petrochemical Plants: Monitoring for explosive gas concentrations in processing areas.
- Marine & Offshore: Providing fire and gas logic for oil platforms and FPSOs.
- Industrial Warehousing: Detecting ammonia or CO2 leaks in cold storage facilities.
- Mining Operations: Real-time monitoring of methane and toxic gases in ventilation shafts.
- Power Generation: Monitoring hydrogen cooling systems for generators.
Product Usage Instructions
- Rack Installation: Slide the card into the System 57 rack. Ensure the rear DIN connector is fully seated before tightening the front panel screws.
- Field Wiring: Connect the 4-20 mA signal from the gas transmitter to the rack termination. Verify that the loop is powered correctly (sourcing/sinking configuration).
- Setup & Programming: Use the pushbuttons behind the front panel door to set the scale (e.g., %LEL, ppm, or %Vol) and the specific alarm trip points.
- Inhibit Function: Before testing the sensor with calibration gas, activate the “Inhibit” mode to prevent the relays from triggering external sirens or shutdowns.
- Diagnostic Check: Monitor the “Fault” LED. A steady green light indicates normal operation; any flashing red or yellow patterns indicate a loop failure or internal card error.
Product Technical Description
The 05701-A-0329 is an advanced version of the standard 05701 series. Technically, it incorporates enhanced signal filtering and higher-reliability relay circuitry to minimize false alarms caused by electrical noise. It provides a stabilized 24V supply to the field transmitter and continuously monitors the loop for “Under-range” (indicating a sensor fault) or “Over-range” (indicating a massive leak). The card is “fail-safe” by design; the fault relay is normally energized and will de-energize (open) if the card loses power or detects an internal microprocessor error.
Q&A (Common Questions)
Q: What is the main difference between the 0301 and the 0329 variants? A: While both are single-channel cards, the 0329 often features specific hardware revisions for better electromagnetic compatibility (EMC) and may have different default factory firmware settings for specialized gas types.
Q: Can I replace a 05701-A-0301 with a 05701-A-0329? A: Yes, they are generally interchangeable within the System 57 rack architecture, but you must ensure the new card is programmed with the same alarm levels and scale as the one it replaces.
Q: How do I view the highest gas concentration recorded? A: Use the “Peak” button on the front panel; the LED display will show the highest value detected since the last memory reset.
Q: Does this card support HART communication? A: No, the System 57 control cards are designed for standard 4-20 mA analog signals. Digital communication is typically handled by a separate interface bridge if required.
Similar Model Recommendations
- Honeywell 05701-A-0301 (Standard 1-Channel Card)
- Honeywell 05704-A-0144 (4-Channel High-Density Card)
- Honeywell 05704-A-0145 (4-Channel Relay Card)
- Honeywell Searchline Excel (High-performance infrared gas detector)
- Honeywell 05701-A-0501 (Dual-channel variant)
For technical support or to request a quote for the Honeywell 05701-A-0329, please contact our safety instrumentation team.
