Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Product Introduction
When your Alstom rail vehicle or urban mass transit train needs continuous onboard operation health monitoring and fault pre-diagnosis, this full set of DIAGNOSTICA modules acts as the core data acquisition and maintenance gateway for the entire vehicle control system.
It features rugged rail-grade design that meets strict vibration, shock and wide temperature tolerance requirements specified by EN 50155 standards. Its compact 120mm × 25mm × 130mm footprint supports standard cabinet plug-in card installation, no major modification work required for existing vehicle control cabinets.

Alstom N897093511D N897093051D DIAGNOSTICA N897093400H
Key Technical Specifications
| Parameter | Value |
|---|---|
| Full Set Part Numbers | N897093511D, N897093051D, N897093400H |
| Product Type | Rail Vehicle Onboard Diagnostic Interface Module Set |
| Nominal Power Supply | 24 VDC, wide input range 19–32 VDC |
| Operating Temperature Range | -25°C ~ +70°C |
| Communication Interfaces | Service RS-232 / RS-485; 10/100Mbps Ethernet on N897093400H variant |
| Signal I/O | Digital status inputs (dry contact / 24V), relay/alarm output, onboard LED status indicators |
| Installation Method | Cabinet-mounted plug-in card / DIN-rail carrier, pluggable terminal connectors |
| Physical Dimensions | 120 mm × 25 mm × 130 mm per module |
| Net Weight | ~0.25 kg per module |
| Protection Rating | IP20 when fully installed |
| Industry Certification | EN 50155 European rail transit equipment safety certified |
| HS Reference Code | 8537.10 (Low-voltage electric control board ≤1000V) |

Alstom N897093511D N897093051D DIAGNOSTICA N897093400H
Field Application & Technical Pitfalls
Critical Industrial Scenarios
- **Urban Metro Train Onboard Control Diagnosis: Acts as the core diagnostic data acquisition unit for Alstom metro vehicle control systems, recording real-time operation status and fault codes for traction, braking and door control subsystems.
- **Mainline Railway Locomotive Maintenance Monitoring: Delivers continuous onboard health monitoring for mainline railway locomotives, uploading operation data to the ground maintenance platform via wireless network for predictive maintenance.
- **Maglev Train Control System Status Collection: Adapts to high-vibration maglev train operation environments, providing reliable diagnostic data collection for the vehicle core control system.
Non-Negotiable Technical Pitfalls
- ⚠️ Bold Warning 1: Never connect 110V DC vehicle power directly to the 24V DC power terminals. The third module’s power regulation circuit will instantly burn out, completely disabling all diagnostic functions.
- ⚠️ Bold Warning 2: Firmware revision mismatch between the three modules will cause diagnostic data synchronization failure. This full set requires Alstom rail control system firmware v4.2+; it will not support full data interconnection on v3.x legacy systems.
- ⚠️ Bold Warning 3: Skipping the pre-installation full-set data synchronization test will leave you with hidden fault recording dead zones. The issue will only surface when a real vehicle fault occurs, leading to incomplete fault code records that extend maintenance downtime.
A metro line maintenance team once swapped a set of DIAGNOSTICA modules and skipped the full-set synchronization test. The hidden data synchronization fault caused the system to miss 3 critical traction system fault codes during a vehicle failure, extending the on-site troubleshooting time by 2.5 hours and causing 12 peak-hour train delays.

Alstom N897093511D N897093051D DIAGNOSTICA N897093400H
Quality Control (QC) SOP & Transparency
- Inbound Verification: Cross-check the OEM serial numbers against Alstom’s official rail part registry, confirm all three part numbers N897093511D / N897093051D / N897093400H match factory labels, and inspect no bent pins or corrosion on all connectors.
- Live Rig Testing: Power the full set of modules in a calibrated Alstom rail control test bench, apply 24V DC power, and confirm full inter-module data synchronization stability for 2 continuous hours.
- Parameter Testing: Verify all RS-232/RS-485/Ethernet communication functions operate correctly, confirm EN 50155 standard vibration simulation test passes, and validate all onboard LED status indicators function properly.
- Final QA & Packaging: Seal all tested modules in separate static-shielding anti-static bags, attach unique QC passed serial labels, and nest them in foam padding inside a rigid industrial shipping carton.

Alstom N897093511D N897093051D DIAGNOSTICA N897093400H
Frequently Asked Questions (FAQ)
- Can I hot-swap these modules while the train control system is running? No. You must first place the vehicle control system in maintenance mode before removing any module, otherwise you will trigger temporary diagnostic data loss alarms.
- What exact Alstom systems is this full set compatible with? It works natively with Alstom urban metro and mainline locomotive control systems. It will not operate correctly with non-Alstom rail vehicle control systems without custom protocol adaptation.
- How long is the standard warranty for this new surplus full set? 12 months from delivery. It covers all manufacturing defects, but does not extend to units damaged by overvoltage, miswiring, or improper firmware matching in the field.
- How do I tell genuine OEM units apart from refurbished clones? Genuine Alstom DIAGNOSTICA modules have a laser-etched part number on the metal housing, not a printed sticker. Clone units almost always fail the EN 50155 standard vibration performance test.
- What is the typical lead time for shipment? In-stock full sets ship within 48 hours. If you require official Alstom EN 50155 rail certification documentation, add 2 extra business days to the turnaround window.
- Can this full set replace the older DIAGNOSTICA legacy module set? Well, technically all modules fit the same cabinet slot footprint, but you will need to reconfigure all diagnostic data mapping parameters in the vehicle control engineering software to unlock the full high-speed data upload performance.
