Description
Product Description
The Honeywell 05701-A-0284 is a dedicated single-channel control card designed for the System 57 gas detection platform. It functions as a sensor driver, processing input from gas detection modules, comparing readings against preset alarm thresholds, and triggering alarms or relay outputs when necessary. The front-panel LCD provides real-time gas level visualization, while LED indicators and optional relay outputs ensure fail-safe alarm signaling. Configuration is retained in non-volatile EEPROM memory, allowing settings to persist through power cycles.
This module is primarily used in safety-critical environments including petrochemical plants, refineries, and power generation facilities. It is rack-mounted within System 57 assemblies and features robust diagnostics for both hardware and sensor health monitoring.
Technical Specifications
| Specification |
Details |
| Model |
05701-A-0284 |
| Module Type |
Single-channel control card / Sensor driver |
| Supported Sensor Modules |
05701-A-0283 (4–20 mA), 05701-A-0302 (Catalytic) |
| Signal Processing |
Microprocessor-controlled, compares input against alarm limits |
| Display |
Front-panel LCD for real-time readings |
| Alarm Indication |
LED indicators; optional relay outputs |
| Alarm Reset |
Dedicated front-panel button |
| Configuration Storage |
Non-volatile EEPROM |
| Diagnostics |
Circuit, software, and sensor self-check |
| Optional Outputs |
Analog output module for remote monitoring |
| Operating Voltage |
24 VDC typical |
| Operating Temperature |
-20°C to +60°C |
| Humidity Range |
0 to 95% RH, non-condensing |
| Mounting |
Rack-mounted in System 57 assemblies |
| Dimensions |
200 × 100 × 50 mm |
| Weight |
1.2 kg |
Key Features & Advantages
-
Real-Time Monitoring: LCD display shows immediate gas concentrations and channel status.
-
Fail-Safe Alarm Activation: LEDs and relay outputs provide reliable alarm signaling.
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Flexible Sensor Compatibility: Supports both 4–20 mA and catalytic sensor drivers.
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Persistent Configuration: EEPROM memory retains settings after power loss.
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Integrated Diagnostics: Self-checks of circuitry, software, and sensor health enhance reliability.
-
Compact Design: Rack-mounted, lightweight module simplifies installation and maintenance.
Applications
-
Gas detection and monitoring in petrochemical plants and refineries
-
Safety monitoring for power generation facilities
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Single-loop control in legacy Honeywell System 57 installations
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Integration with multi-point gas detection networks using multiple 05701-A-0284 cards
FAQ
Q: How many sensors can this card support?
A: One sensor per module; multiple cards are needed for multi-sensor installations.
Q: Can this card operate in extreme temperatures?
A: Yes, it functions between -20°C to +60°C with 0–95% non-condensing humidity.
Q: Is it compatible with modern Experion PKS systems?
A: No, it is specifically designed for Honeywell System 57 platforms.
Q: How is alarm output handled?
A: LEDs indicate alarms locally, and optional relay outputs allow remote signaling.
