Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Part number | 05704-A-0146 |
| Product designation | 5704F Fire Card |
| System | Honeywell System 57 |
| Fire zone inputs | 4 |
| Switched DC outputs | 2 monitored output circuits |
| Remote input | Single three-function remote input |
| Supply voltage | 21–32 VDC |
| Power consumption | Approximately 2 W in one published specification; verify against the applicable hardware revision |
| Operating temperature | -5°C to +55°C |
| Storage temperature | -25°C to +55°C |
| Operating humidity | 20–90% RH, non-condensing |
| Dimensions | 3U high × 25 mm wide |
| Weight | Approximately 175 g |
| Approval reference | EN 50270 |
Specification caution: Some supplier listings report different power-consumption figures and describe relay capacity differently. The 5704F system documentation identifies separate relay-interface hardware, including the 05704-A-0123 and 05704-A-0133. Do not assume that all relay outputs are physically onboard the 05704-A-0146 card.
Product Introduction
Honeywell 05704-A-0146 5704F Fire Control Card
The Honeywell 05704-A-0146 is a four-zone fire-control card designed for the System 57 5704F fire and gas detection platform. It monitors four fire zones, provides two monitored switched DC output circuits, and supports remote control functions. Its narrow 25 mm form factor allows installation in the designated System 57 rack architecture.
05704-A-0146
For maintenance teams, the main procurement consideration is preserving the original fire-zone configuration and output behavior. Replacement work should include verification of the rack position, interface hardware, remote-input wiring, and relay configuration. A card that physically fits the rack is not automatically a functionally equivalent replacement.
Application Scenarios & Field Pitfalls
The 05704-A-0146 is intended for fire detection and alarm-control installations using the Honeywell 5704F architecture. It is relevant where an existing System 57 installation requires replacement of a failed fire-control card without changing the established detection and alarm arrangement.
Typical application scenarios
- Industrial fire-zone monitoring: Supervises four configured fire zones in a System 57 installation.
- Fire alarm output control: Operates two monitored switched DC output circuits.
- Remote alarm management: Supports remote accept, reset, and silence functions.
- Legacy fire-system maintenance: Provides a replacement reference for existing 5704F rack installations.
Field engineering warnings
- Check the system family. The 05704-A-0146 is a 5704F fire card. Do not confuse it with 05704-A-0144 or 05704-A-0145, which are four-channel control cards for the standard 5704 system.
- Verify relay-interface hardware. Confirm whether the installation uses the 05704-A-0123 Hex Relay Interface Card or 05704-A-0133 Relay Interface Assembly. Check the actual wiring and configured relay functions before commissioning.
- Check supply and output circuits. Confirm the installed supply falls within the documented 21–32 VDC range and inspect field wiring, fusing, and monitored output circuits.
- Perform functional testing. After installation, test all four fire zones, fault responses, remote functions, and configured alarm outputs. Do not return the fire protection system to service based only on a successful power-up.
Related Products
These parts belong to the Honeywell System 57 ecosystem, but they are not interchangeable substitutes for the 05704-A-0146.
| Model | Product function and relationship |
|---|---|
| 05704-A-0123 | 5704F Hex Relay Interface Card. Provides relay-interface functionality; verify the installed relay configuration. |
| 05704-A-0133 | 5704F Relay Interface Assembly. Separate relay-interface hardware for 5704F installations. |
| 05704-A-0148 | 5704F Fire Status Panel. Provides fire-system status indication rather than the four-zone control function. |
| 05704-A-0144 | Standard 5704 four-channel catalytic control card. Different detection application and system configuration. |
| 05704-A-0145 | Standard 5704 four-channel 4–20 mA control card. Not a direct fire-card replacement. |
| 05704-A-0121 | Standard 5704 quad relay interface card. Different system-family application. |
| 05704-C-0160 | 5704 interconnection cable. Check connector and rack compatibility before use. |
Procurement recommendation: For a replacement order, confirm the complete part number 05704-A-0146, front-panel condition, PCB revision, and compatibility with the installed 5704F relay-interface arrangement. For a safety-related fire detection system, require documented functional testing before the replacement card is accepted for service.
