Foxboro A2H124-24FX P0973BJ Managed Ethernet Switch
Manufacturer: Foxboro
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Part Number: A2H124-24FX P0973BJ
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 A2H124-24FX P0973BJ Managed Ethernet Switch
Configured for deterministic data routing and optical signal distribution in Foxboro I/A Series networks, the Foxboro A2H124-24FX P0973BJ (A2H124-24FX Managed Ethernet Switch) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | A2H124-24FX P0973BJ |
| Brand | Foxboro |
| Origin | USA |
| Weight | 0.6 kg |
| Dimensions | 102 x 102 x 152 mm |
| Operating Temp | 0 to +60 deg C |
| Power Consumption | Max 8.5 W |
| Port Count | 24 x fiber optic ports |
| Onboard Memory | 16 MB SDRAM, 32 MB Flash |
| Input Voltage | 24 VDC (redundant input support) |
| System Compatibility | Foxboro I/A Series DCS |
| Storage Temp | -40 to +85 deg C |
| Relative Humidity | 5% to 95% non-condensing |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The Foxboro A2H124-24FX P0973BJ manages network traffic flow across 24 fiber optic channels, isolating control nodes from ground potential differences and high-frequency electromagnetic noise. While processing high-speed digital communications across distributed control architectures, internal power isolation circuits maintain stable 24 VDC rail operation across redundant supply inputs. Channel-to-channel isolation across the optical transceivers prevents ground loops from propagating to adjacent DCS field enclosures, preserving signal integrity across long-distance fiber runs connected to remote I/O subsystems.
Frequently Asked Questions
Q: Does the A2H124-24FX P0973BJ support dual 24 VDC power supply inputs for redundancy?
A: Yes. The switch module includes dual 24 VDC input terminals, allowing secondary power supply tie-in to prevent network interruption if the primary power line drops.
Q: How does fiber optic isolation benefit the Foxboro I/A Series architecture?
A: Optical port interfaces eliminate electrical continuity between network nodes, providing physical galvanic isolation that stops transient voltage spikes and ground loop currents from damaging connected DCS hardware.
Q: Can the switch be deployed in standard panel enclosures without active cooling fans?
A: Yes. The unit draws a maximum of 8.5 W, allowing thermal dissipation via natural convection when installed within enclosures maintained between 0 and +60 deg C.
Field Installation Guidelines
- Power Disconnection: Verify all 24 VDC external power sources are de-energized and locked out before wiring input terminal connectors.
- Mechanical Mounting: Secure the chassis vertically to standard mounting rails or panel surfaces, ensuring structural stability before attaching heavy optical patch cables.
- Fiber Optic Termination: Clean all fiber connector ends with optical-grade alcohol wipes before insertion into port transceivers to prevent signal attenuation caused by dust contamination.
- Redundant Power Cabling: Connect independent 24 VDC power feeds to primary and secondary terminal pairs, maintaining correct voltage polarity across both inputs.
- Ground Wire Attachment: Fasten a low-impedance ground wire from the chassis ground lug directly to the enclosure master earth ground bar.