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Help CenterALSTOM N897092520B / N897092057Y / N897092500E (TRENO) – Train TCMS I/O and Control Modules for Rolling Stock Maintenance
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Warranty: 365 days
Delivery: 1 week if in stock; no more than one month at the latest
Payment: 50% advance payment; full payment prior to delivery
Express options: FedEx, UPS, DHL
TCMS-ready integration: Designed for onboard control racks; commonly interfaces with vehicle buses used in ALSTOM fleets.
Railway-grade power: 24 VDC nominal input with robust transient protection for rolling stock power environments.
Ruggedized electronics: Shock/vibration tolerant construction suitable for underframe or saloon equipment cabinets.
Isolated I/O: Discrete 24 VDC inputs/outputs and, in many cases, analog channels for auxiliary systems.
Form-fit-function spares: A practical drop-in replacement to shorten downtime during corrective maintenance.
Traceable part IDs: Clear part markings for configuration control; suffixes (B/Y/E) indicate revision or variant.
Specifications below reflect typical characteristics for this ALSTOM N8970-series of onboard I/O/control modules. Exact I/O maps and bus options can vary by vehicle program; we can verify against your train data sheet or a photo of the module label.
| Brand / Models | ALSTOM N897092520B / N897092057Y / N897092500E (TRENO) |
| HS Code | 853890 (Parts suitable for use with electrical control equipment) |
| Power Requirements | 24 VDC nominal (typical operating range 16.8–30 VDC), input protection against transients and reverse polarity |
| Dimensions & Weight | Plug-in rack module; commonly 3U format with approx. 220–260 mm card depth; weight typically under 1.2 kg (varies by variant) |
| Operating Temperature | -25 °C to +70 °C (railway onboard environment; storage range wider) |
| Signal I/O Types | Discrete 24 VDC inputs/outputs (sink/source); some variants with analog 0–10 V or 4–20 mA channels; galvanic isolation on selected channels |
| Communication Interfaces | Vehicle bus interface as specified by fleet (commonly MVB or serial RS‑485 service access); model-specific connectors |
| Installation Method | Rack-mounted plug-in module with backplane connector; front-panel D‑sub / circular or spring-clamp interfaces depending on variant |
These modules are suited to onboard subsystems typically managed by the TCMS, including:
Door control and interlock I/O
HVAC command/feedback and fan group control
Auxiliary converters and battery charger supervision
Lighting, PIS/CCTV trigger lines, and cab signals interfacing
Bogie/axlebox condition inputs and event/alarm aggregation
A rolling stock operator in Italy shared that the N8970-series card made a same-day recovery possible on a commuter set—swap the card, reload configuration, and the consist was cleared for service before the evening peak. That’s typically the kind of turnaround these parts are bought for.
Reliability in service: Built for the electrical noise and vibration found on trains, with stable performance over long duty cycles.
Compatibility: Form, fit, and function alignment with existing ALSTOM racks reduces commissioning risk.
Cost savings: Shorter downtime and no redesign of wiring or software typically means lower total maintenance cost.
Technical support: We can match module suffixes and firmware levels against your train’s BOM to avoid version conflicts.
Cabinet standards: Mount in the designated onboard rack; keep 20–30 mm clearance for ventilation and cable bend radius.
Power & grounding: Use a clean 24 VDC supply with proper earthing; verify polarity and chassis bonding to avoid ground loops.
Wiring: Match I/O channel numbering to the original card; confirm discrete input thresholds and output load limits before energizing.
Addressing/configuration: Set DIP/rotary addresses as per the original; reload configuration files if the fleet requires parameterization.
Safety: De-energize circuits, observe ESD precautions, and document the card’s serial/revision during swap.
Routine care: Quarterly dusting with dry air, connector inspection, and—where applicable—firmware/parameter verification after major overhauls.
Designed for rail environments in line with EN 50155 and EN 50121 practices (model- and project-dependent)
CE marking and RoHS conformity are commonly applied on this category of onboard electronics
Manufactured under ISO 9001 quality systems (typical for ALSTOM supply chains)
Warranty: 365 days from shipment
24 VDC isolated PSU (rail grade): To stabilize onboard supply during cranking and transient events.
Backplane / rack slot hardware: Replacement card guides and ejector hardware for worn cabinets.
MVB harness or serial service cable: For commissioning and diagnostics.
Shielded I/O jumpers: Reduce induced noise on long runs to door or HVAC subsystems.
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