Description
Product Overview
The ALSTOM 12004-102-01 VPS BOARD VER.C is a legacy ALSTOM electronics board associated with the company’s VME-based control hardware. Available product references identify the board as 12004-102-01, with VER.C indicating the hardware revision. One technical catalog explicitly describes it as an ALSTOM VPS VME Power Supply Module, while other references classify the same part as an interface or control board. This difference is important: the VPS designation and physical board should be verified against the host cabinet before assigning a specific electrical function.
In an installed ALSTOM control system, the ALSTOM 12004-102-01 VPS BOARD VER.C appears to serve as part of the rack-level power/interface architecture rather than as a conventional standalone PLC CPU. Its VME association means that compatibility depends on the host rack, backplane, adjacent boards, power distribution, and system revision. The VER.C revision should be treated as a meaningful hardware identifier—not merely a cosmetic suffix—when maintaining an older system.
From a procurement standpoint, this is a part where restraint is appropriate. Some secondary listings claim 24 VDC input, 5 VDC output at 10 A, extensive digital/analog I/O, or even vehicle-protection functionality. Other records simply identify it as a VME power-supply module. Those descriptions cannot all be correct. For a critical replacement, the original board’s connector layout, nameplate, rack position, and cabinet drawings should take precedence over generic online specifications.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ALSTOM |
| Model | 12004-102-01 |
| Board Marking | VPS BOARD VER.C |
| Hardware Revision | Version C |
| Product Type | VPS Power Supply / Interface Board |
| Architecture | VME-based legacy control hardware |
| System Interface | VME/backplane interface, system dependent |
| Installation | VME rack / compatible ALSTOM cabinet |
| Field I/O | Not reliably confirmed |
| Communication Protocol | Not reliably confirmed |
| Input Voltage | Not reliably confirmed |
| Output Voltage | Not reliably confirmed |
| Output Current | Not reliably confirmed |
| Operating Temperature | Not reliably confirmed |
| Dimensions | VME/rack-dependent; verify against original unit |
| Firmware | Hardware/system revision dependent |
| Condition | New Surplus, subject to inspection and functional testing |
Important specification warning: One source claims a 24 VDC input, 5 VDC ±5% output, and 10 A output, but that same source also labels the board as a “language controller” and assigns it unrelated environmental and standards data. Another source describes it as a VME power-supply module. I would not publish 24 VDC / 5 VDC / 10 A as confirmed specifications without an original ALSTOM datasheet or nameplate.
Likewise, claims of 16 digital inputs, 16 digital outputs, and 8 analog inputs appear in another secondary listing but are not sufficiently corroborated.
12004-102-01
Related Products
- ALSTOM 12004-101-00 / SBS04M17C — Related ALSTOM control/interface board. It belongs to the same broader legacy hardware ecosystem but should not be treated as a direct substitute for the VPS board.
- ALSTOM 12004-08-01 / SBS07M076B — Another legacy ALSTOM board associated with the same general control-system family. Useful as a supporting spare reference, with function and slot compatibility requiring verification.
- ALSTOM 12003-101-01 / SBS05M09B — Related ALSTOM legacy module. It may appear in the same cabinet or control architecture, but its hardware function differs from the VPS board.
- ALSTOM 12004-103-01 / I/OBUS2 — Bus interface module listed alongside 12004-102-01. Its role is communication/bus interfacing rather than primary power conversion.
- ALSTOM 12004-102-03 / VPS V1.0.0 — Related VPS identification appearing in current spare-part references. The different suffix means the hardware should be verified before considering it as a replacement for Version C.
- ALSTOM 12004-104-00 / I/OBE2 — Safety I/O module in the same broader platform. It provides I/O functionality rather than serving as the VPS power/interface board.
- ALSTOM 12004-106-04 / VOOB8-B — Eight-channel digital output module. It can be part of a compatible control rack but is functionally different from the VPS board.
- ALSTOM 42011-106-00 / ITC_VIOM_VIOC VER.A01 — Related ALSTOM control-system module used for I/O and control functions. It is a complementary system component, not a direct VPS replacement.
Frequently Asked Questions
1. What is ALSTOM 12004-102-01 VPS BOARD VER.C used for?
Available technical references associate it with ALSTOM VME-based control hardware, with one catalog specifically identifying it as a VPS VME power-supply module.
Because other listings describe it as an interface/control board, the exact installed function should be confirmed from the host system documentation before replacement.
2. Is 12004-102-01 a PLC CPU?
It should not be classified as a conventional PLC CPU.
The available evidence points toward a VME rack-level power/interface role. Some secondary listings call it a controller card, but those descriptions are not sufficiently consistent to establish CPU functionality.
3. Can I replace Version C with 12004-102-03?
Not automatically.
The two parts share the VPS designation, but the different part numbers indicate a potentially different hardware revision or configuration. Before substitution, compare:
- PCB revision
- Connector pinout
- Backplane interface
- Input/output power
- Rack position
- Adjacent board requirements
- System revision
For a safety- or turbine-control application, obtain engineering approval before using a different suffix.
4. Can I hot-swap the 12004-102-01?
Do not assume hot-swap capability.
A VME board may physically support insertion into a rack, but that does not mean the installed ALSTOM system permits energized removal. If this board is part of the rack power architecture, removing it while energized could affect multiple dependent modules.
Use the plant’s approved shutdown or maintenance procedure and verify the rack’s power state before removal.
5. Will replacing the VPS board erase my control logic?
The board should not be treated as the primary location for PLC/DCS application logic.
The main concern is whether the replacement board has the same hardware revision and electrical interface. If the board participates in system power distribution, a mismatch can prevent other VME modules from starting even though the application software itself remains intact.
6. Does 12004-102-01 support firmware v3.1?
There is no reliable evidence establishing a firmware v3.1 requirement for this board.
For replacement work, record the original board revision (VER.C) and the host-system software revision. A hardware board with the same base number but a different revision should not be assumed equivalent.
7. How should I verify a New Surplus 12004-102-01?
For this part, I would check:
- 12004-102-01 marking
- VPS BOARD VER.C marking
- PCB revision
- Connector and backplane condition
- Component condition
- Rack compatibility
- Power-interface requirements
- Visual inspection for corrosion or storage damage
- Controlled electrical test
- System-level startup and diagnostic verification
Procurement judgment: The safest product description is ALSTOM 12004-102-01 VPS BOARD VER.C, legacy VME-based VPS power/interface board. Public sources disagree too much to justify publishing detailed electrical specifications as fact.
