A4H124-24FX P0973JN Foxboro Managed Ethernet Switch
Manufacturer: Foxboro
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Part Number: A4H124-24FX
Condition：New with Original Package
Product Type: Managed Ethernet Switches
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Foxboro A4H124-24FX P0973JN Managed Ethernet Switch
The Foxboro A4H124-24FX P0973JN, also cataloged as the A4H124-24FX Managed Ethernet Switch, operates as a dedicated hardware component for high-speed fiber optic data routing and network traffic management within Foxboro I/A Series platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | A4H124-24FX P0973JN |
| Brand | Foxboro |
| Origin | USA |
| Weight | 0.6 kg |
| Dimensions | 100 x 100 x 150 mm |
| Operating Temp | 0 to +60 deg C |
| Power Consumption | Approx 8.5 W |
| Port Configuration | 24 x fiber optic ports |
| Input Voltage | 24 VDC (supports redundant supply) |
| Onboard Memory | 16 MB SDRAM, 32 MB Flash |
| System Compatibility | Foxboro I/A Series DCS |
| Storage Temp | -40 to +85 deg C |
| Humidity Range | 5% to 95% RH non-condensing |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The Foxboro A4H124-24FX P0973JN routes high-throughput industrial Ethernet data across 24 optical channels while isolating connected controllers and remote field I/O nodes from potential electrical transients. Integrated channel-to-channel isolation across the optical transceivers blocks ground loop currents across long-distance cabinet interconnects. The switch maintains noise-free transmission paths when operating adjacent to high-density analog loop wiring, shielding process control data streams from high-frequency electromagnetic interference across field junction enclosures.
Frequently Asked Questions
Q: How does the switch handle power input failures during operation?
A: The module contains dual 24 VDC input terminals that connect to independent power buses. If the primary supply drops, internal diode logic routes power from the auxiliary supply without interrupting network frame forwarding.
Q: Can the fiber ports operate without external transceiver modules?
A: Yes. All 24 fiber optic ports feature integrated optical interfaces designed for direct connection to standard industrial LC or ST fiber optic patch cables.
Q: Does the unit support network redundancy protocols across Foxboro DCS architectures?
A: Yes. Onboard firmware manages VLAN, QoS, and industrial ring redundancy protocols to execute sub-second path switching in the event of a damaged fiber cable link.
Field Installation Guidelines
- Supply Power Isolation: Disconnect and lock out all 24 VDC power lines supplying the target enclosure prior to mounting or servicing the switch.
- Chassis Panel Mounting: Secure the switch enclosure vertically onto a flat, grounding-conductive panel or within a standard rack bay using proper fastening hardware.
- Fiber Transceiver Care: Clean all fiber optic connectors with lint-free wipes and alcohol before plugging them into the optical ports to eliminate signal attenuation.
- Power Conductor Termination: Strip primary and secondary 24 VDC supply conductors cleanly, inserting them firmly into labeled terminal blocks with correct polarity.
- Frame Earth Grounding: Run a heavy-gauge copper grounding strap from the chassis grounding stud directly to the main cabinet earth bus bar.