Description
Product Overview
The Honeywell 05701-A-0301 is a single-channel control card for Honeywell System 57 gas detection rack system, under Honeywell Sieger product line. It receives 4–20mA analog signals from toxic gas, oxygen, UV flame or general 4-20mA gas transmitters, performs concentration calculation, local display, multi-stage alarm logic and continuous loop diagnostics. It is different from 05701-A-0302 (catalytic bead LEL card). Widely used in refineries, chemical plants, offshore platforms and compressor stations, this legacy rack card serves as spare replacement parts for existing System 57 gas safety installations.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | 05701-A-0301 |
| Brand | Honeywell (Sieger) |
| Type | Single Channel 4-20mA Gas Control Card |
| Compatible Platform | Honeywell System 57 Gas Detection Rack |
| Input Signal | 4–20 mA analog transmitter signal |
| Backplane Supply | 18 ~ 32V DC |
| Typical Power Consumption | 2.8W |
| Front Display | 25-segment bar graph + 4-digit numeric readout |
| Status LEDs | A1 / A2 / A3 Alarm, Fault, Inhibit |
| Local Button | Alarm Reset / Card Select |
| Alarm Resolution | 1% FSD step |
| Diagnostics | Loop open circuit, short circuit and transmitter fault detection |
| Operating Temperature | -5°C ~ +55°C |
| Storage Temperature | -25°C ~ +70°C |
| Humidity | 5~95% RH, non-condensing |
| Dimensions | 170 × 25 × 112 mm |
| Net Weight | 155 g |
| Certifications | CE |
| Product Status | OEM discontinued, aftermarket spare only |
Key Features
- Single channel 4-20mA input for toxic gas, oxygen and flame detectors
- Three independently configurable alarm stages A1, A2, A3 for hazard alerting
- Built-in loop fault diagnostics to detect open circuit, short circuit and transmitter failure
- Front panel bar graph + digital display for on-site gas concentration reading
- Alarm inhibit and reset function for maintenance lockout
- 1-inch narrow rack form factor for System 57 chassis slots
- Calibration and parameter setup via System 57 engineering card 05701-A-0361
Installation & Testing Notes
- Insert the card into the designated slot of Honeywell System 57 rack
- Terminate field 4-20mA transmitter wiring and check loop resistance before applying rack power
- After power-up, verify front panel display and LED indicators
- Use 05701-A-0361 engineering card to complete zero and span calibration
- Inject 4mA / 20mA reference signal to validate reading accuracy and alarm trigger
- This card does NOT support hot swap. Isolate rack backplane power before removal
- Perform periodic calibration according to site gas safety maintenance procedures
FAQ
Q: What input signal does 05701-A-0301 accept? A: 4–20mA analog signal from gas or flame transmitters.
Q: What is the difference between 05701-A-0301 and 05701-A-0302? A: 05701-A-0301 is for 4-20mA transmitters; 05701-A-0302 is dedicated for catalytic bead combustible LEL sensors.
Q: Which rack system is this card used in? A: Honeywell System 57 gas detection rack.
Q: Which part number is required for calibration? A: 05701-A-0361, System 57 engineering card.
Q: Is hot swap available? A: No, backplane power must be disconnected before installing or removing the card.
| Honeywell RANGE2000 |
| Honeywell 05701-A-0145 Four-Channel Control Card |
| Honeywell 05701-A-0361 System 57 Engineering Card |
| Honeywell 05701-A-0302 Single Channel Catalytic Gas Control Car |
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