05704-A-0145
System 57 Four-Channel 4-20 mA Control Card · Four-channel control card for monitoring 4-20 mA gas-detector loops in a System 57 / 5704 rack with the required interface and relay hardware.
Lifecycle note: Use the unit nameplate and current Honeywell documentation as final references before approving a replacement.
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+86 15359408275System 57 Four-Channel 4-20 mA Control Card · Honeywell Analytics System 57 / 5704
Honeywell 05704-A-0145 is a four-channel 4-20 mA control card for the System 57 / 5704 gas-detection platform. It accepts analog current-loop signals from compatible gas detectors and supports channel monitoring within the rack configuration.
Honeywell documentation shows the card used with detector loops such as MIDAS and with the 05704-A-0121 quad relay interface card where relay outputs are required. The actual alarm behavior depends on the channel setup, detector scaling and installed interface hardware.
Before replacement, record rack position, detector type, 4-20 mA scaling, alarm thresholds, relay mapping and 24 VDC loop wiring. Test fault, alarm and relay actions using the approved gas-detection commissioning procedure.
| Manufacturer | Honeywell Analytics |
|---|---|
| Model | 05704-A-0145 |
| Product type | Four-channel control card |
| System family | System 57 / 5704 |
| Input architecture | Four 4-20 mA gas-detector channels |
| Documented detector example | MIDAS connected to a 5704 channel |
| Associated relay hardware | 05704-A-0121 quad relay interface card in documented applications |
| Field supply context | 24 VDC gas-detection loop |
| Configuration checks | Channel wiring, detector range, alarm levels, relays and rack position |
Honeywell 05704-A-0145 monitors four 4-20 mA gas-detector channels in a compatible System 57 / 5704 rack and applies the configured channel logic.
Honeywell 05704-A-0145 is a four-channel card, with each 4-20 mA loop requiring the correct detector type, range, supply and terminal assignment.
Honeywell documentation shows Honeywell 05704-A-0145 used with the 05704-A-0121 quad relay interface card where the installed design requires relay outputs.
Honeywell documentation includes a MIDAS-to-5704 wiring example for Honeywell 05704-A-0145, but channel terminals, loop power and scaling must follow the approved drawing.
Record the Honeywell 05704-A-0145 rack slot, detector gas and range, alarm thresholds, latching behavior, relay assignments, fault logic and calibration data.
Another System 57 card should not replace Honeywell 05704-A-0145 unless the channel count, input type, firmware, rack compatibility and relay interface are confirmed.
Provide the Honeywell 05704-A-0145 nameplate, System 57 rack details, detector models and ranges, relay card, channel configuration, quantity and destination.
Send the complete model, revision, quantity, destination and nameplate photo so the exact hardware identity can be checked.
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