Product Core Brief
- Models: N897163510Q / N897163050Q / MODEM / N897163100U
- Brand: ALSTOM
- Series: ALSTOM MODEM Serial Communication Module Family
- Core Function: Serial modem module used to provide point-to-point or multi-drop data links for ALSTOM signaling, remote I/O, SCADA, and rail control systems.
- Product Type: Serial Modem Module / Data Link Module / Communication Interface Unit
- Key Specs: RS-232/RS-485 serial interfaces | 24 VDC nominal supply | Point-to-point or multi-drop operation | Status LEDs | DIN-rail or panel-mounted cabinet module | Revision-dependent interface and firmware
- Condition: New Original / New Surplus
Product Introduction
ALSTOM N897163510Q / N897163050Q / MODEM / N897163100U is an ALSTOM serial modem module used to maintain serial data links in rail signaling and industrial control cabinets. It is typically deployed in wayside signaling interlockings, central control rooms, remote I/O backhaul circuits, depot/station SCADA links, and legacy subsystems where Ethernet is not natively available.
The module converts serial signals from field equipment, controllers, or remote I/O into a modem-compatible transmission format, supporting point-to-point or multi-drop communication over dedicated serial channels. Status LEDs help technicians verify power, link state, and data activity during commissioning, maintenance, and fault tracing.
Public spare listings describe this family as an ALSTOM modem/data link module with RS-232/RS-485 interfaces and 24 VDC supply for signaling and control cabinets. Some third-party pages describe it as a train network control module with ARM/FPGA processors, MVB/TCMS functions, or traction monitoring; however, those descriptions conflict with the MODEM designation and the available spare-part data. Always verify the installed nameplate, revision code, interface type, and cabinet drawing before procurement.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Full Model | ALSTOM MODEM — N897163510Q / N897163050Q / N897163100U |
| Product Type | Serial modem / data link module |
| System Platform | ALSTOM signaling, remote I/O, SCADA, and rail control cabinets |
| Core Function | Serial data transmission, point-to-point/multi-drop communication |
| Interfaces | RS-232 and/or RS-485 serial interfaces; service/status indicators |
| Power Supply | 24 VDC nominal; confirm exact range from installed nameplate |
| Operating Temperature | Typically −25 °C to +70 °C for wayside/control room variants; confirm per build |
| Installation | DIN-rail or panel mounting inside protected control cabinets |
Quality Control Process
- Visual and code check: Confirm MODEM labeling, N897163510Q / N897163050Q / N897163100U part number, revision code, and connector condition.
- Nameplate verification: Confirm supply voltage, interface type, firmware/revision, and compatible ALSTOM cabinet.
- Interface check: Inspect serial ports, terminal blocks, service ports, and status LEDs.
- Functional check: Verify power-up, serial link establishment, LED indication, and data transmission where test fixtures allow.
- Final packing: Record test results, apply asset labels, and ship with connector and PCB protection.
Replacement Pitfall Guide
❗ Confirm revision before substitution. N897163510Q, N897163050Q, and N897163100U may represent different revisions, interface options, or firmware builds.
❗ Verify serial interface type. The replacement must match the installed RS-232/RS-485 configuration, baud rate, and wiring.
❗ Do not treat it as a CPU, PLC, MVB card, or traction controller. This is a serial modem/data link module; replacing it with a processor or network control board will not work.
❗ Check supply voltage and polarity. Most listings indicate 24 VDC nominal; incorrect supply can damage the module or connected equipment.
❗ Confirm mounting and connector layout. DIN-rail, panel-mount, and front-connector arrangements may differ by variant.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| ALSTOM MODEM / / | Same MODEM revision | Direct | Like-for-like when revision, interface type, supply voltage, and cabinet match. |
| ALSTOM | / MODEM | Needs Adaptation | Confirm serial interface, baud rate, firmware, and connector layout. |
| ALSTOM MODEM | Other ALSTOM serial modem module | Needs Adaptation | Verify protocol, wiring, address/multi-drop settings, and host system. |
| ALSTOM MODEM | Modern serial/Ethernet gateway | Needs Adaptation | Requires protocol review, wiring changes, and commissioning support. |
- Typical use: ALSTOM signaling interlockings, wayside/central control rooms, remote I/O backhaul, depot/station SCADA links, legacy serial data circuits, and rail infrastructure cabinet retrofits.
- Key verification points: MODEM function label, N897163510Q / N897163050Q / N897163100U revision, RS-232/RS-485 configuration, supply voltage, baud rate, installed cabinet model, and host system interface.
