Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Sagemcom |
| Part Number | 252721013AF |
| Product Type | Communication / Interface Module |
| Hardware Suffix | AF |
| Application | OEM communications and control equipment |
| Architecture | OEM-specific |
| Communication Function | Reported by secondary sources; exact protocol requires verification |
| Interface | Exact connector/interface arrangement requires physical confirmation |
| Operating Voltage | Not reliably confirmed from OEM documentation |
| Operating Temperature | Not reliably confirmed from OEM documentation |
| Mounting | Host-equipment dependent |
| Condition | New Surplus / Refurbished, subject to inventory |
Important technical note: Public sources are inconsistent. One source identifies 252721013AF as a communication module and publishes Ethernet/Modbus/PROFIBUS information, while another describes it as an interface/I/O board. Those specifications should not be treated as OEM-confirmed data.
For a production replacement, the safest specification is the exact installed-unit identification rather than an inferred protocol or voltage.
Application Scenarios & Pain Points
The primary field problem with this part is identification uncertainty. An engineer can easily receive a replacement that has the correct numeric prefix but belongs to a different hardware assembly.
- Legacy control equipment: Suitable as an exact-match spare where the plant BOM or equipment documentation specifies 252721013AF.
- Communication assemblies: Secondary references associate the part with communication/interface functions, but the actual host architecture should determine its role.
- I/O-related equipment: Some listings describe it as an input/output board, indicating that its physical application may depend on the host equipment.
- Maintenance stock: Particularly useful where an installed machine has no current OEM replacement and an exact board-level spare is required.
Brief Field Case
For an obsolete communications cabinet, a technician may identify a failed board only by the number printed on its label. Before ordering, photograph both sides of the assembly and record every connector marking. That information can distinguish an actual replacement from a superficially similar board.
252721013AF
Related Products
- Sagemcom 252721013AF — Subject part number. Use the exact hardware identification when the installed equipment calls for this assembly.
- Sagemcom 252721117AC — Related Sagemcom-numbered industrial spare frequently listed alongside 252721013AF. It should not be assumed interchangeable; the two have different part numbers and potentially different functions.
- Sagemcom 252720938AB — Another related Sagemcom assembly frequently appearing in industrial automation inventories. Its function and interface should be independently verified before substitution.
- GE IS420ESWBH2A — Mark VIe Ethernet-switch hardware appearing in similar industrial spare inventories. It provides a different network function and is not a direct substitute.
- GE IC670ALG310-JA — Analog output hardware from a different control architecture. It may appear in the same procurement environment but has a completely different I/O function.
- FOXBORO FBM242 RH916TA — Industrial discrete I/O hardware. Relevant to control-system spare planning, but not a replacement for the Sagemcom board.
- ABB PFEA111 Series — Tension-control instrumentation hardware. It is another example of an industrial automation spare but operates in a different application.
- Vibro-meter VM600 IOC4T — Machinery-monitoring I/O hardware. Useful as a complementary maintenance category, not a functional substitute for 252721013AF.
The Engineer’s Guide: Field Pitfalls to Avoid
WARNING 1 — Do not assume the function from the part number.
Available sources disagree on whether 252721013AF is primarily an interface, communication, or I/O board.
How to avoid it: Match the part to the host equipment, cabinet location, connector layout, and original BOM.
WARNING 2 — Do not accept unverified electrical specifications.
Some secondary listings claim 12–24 VDC, Ethernet, Modbus, PROFIBUS, and other specifications, but those values are not sufficiently supported by reliable OEM documentation for this exact part.
How to avoid it: Verify voltage and signal interfaces from the machine schematic or the original technical manual before applying power.
WARNING 3 — Similar Sagemcom numbers are not automatically interchangeable.
252720938AB, 252721013AF, and 252721117AC are frequently listed together, but their exact functional relationships are not established by the available documentation.
How to avoid it: Require the replacement supplier to provide photographs of the actual board and its complete identification label.
Frequently Asked Questions (FAQ)
What is Sagemcom 252721013AF?
It is an OEM Sagemcom part number associated with communication/interface hardware. Public industrial spare listings also describe it as an I/O-related board, so its precise system function should be verified against the host equipment.
Is 252721013AF a PLC module?
I would not classify it as a standard PLC module such as a CPU, digital input, or analog output card without additional system documentation. It appears to be an OEM-specific board used within a larger equipment assembly.
Does 252721013AF support Ethernet, Modbus, or PROFIBUS?
One secondary listing claims Ethernet, Modbus, and PROFIBUS support, but this information conflicts with other descriptions and is not sufficiently verified.
For engineering purposes, treat those protocols as unconfirmed until the actual equipment manual or board documentation establishes them.
Is 252721013AF interchangeable with 252721117AC?
No—not without an OEM-approved cross-reference. Both numbers appear in industrial spare inventories, but there is insufficient evidence to establish direct interchangeability.
What should I request when buying a replacement?
For this particular part, request:
- Clear front and rear photographs.
- Complete 252721013AF nameplate.
- Hardware/revision information.
- Connector photographs.
- Host-equipment identification.
- Power-on test.
- Communication/I/O test appropriate to the host system.
- Condition statement.
- Warranty period.
How should a refurbished 252721013AF be tested?
A simple power-on test is inadequate. The correct test should reproduce the board’s actual application: verify the supply rails, inspect connectors and PCB condition, establish communication with the host equipment, and confirm the relevant I/O or interface channels.
For an obscure OEM assembly such as 252721013AF, application-level testing is far more valuable than a generic “tested OK” label.
