SCALANCE X accessory for optical Industrial Ethernet connections using multimode fiber.
Siemens 6GK5991-2AB00-8AA0 is the SCALANCE MM991-2 (BFOC) optical media module for modular Industrial Ethernet equipment. It provides two 100 Mbit/s BFOC optical ports for multimode fiber links and supports distances up to 5 km under the documented conditions. Siemens documentation identifies the module as an accessory used with compatible SCALANCE platforms, including the SCALANCE S627-2M. It is intended for network segments where electrical Ethernet must transition to fiber for distance, isolation or plant-layout requirements. Procurement should be based on the exact order number because connector style, port count and supported host device are configuration-critical.
| Manufacturer | Siemens |
|---|---|
| Complete Part Number | 6GK5991-2AB00-8AA0 |
| Commercial Status | Prod. Cancellation |
| Supply Review | Availability, condition and documentation are verified for each quotation. |
| Commercial Notice | Stock, lead time, warranty scope and final compatibility depend on the offered unit and order context. |
| Manufacturer | Siemens |
|---|---|
| Complete Part Number | 6GK5991-2AB00-8AA0 |
| Product Type | Optical media module |
| Product Family | SCALANCE X accessories |
| Module Designation | MM991-2 (BFOC) |
| Optical Ports | 2 BFOC |
| Data Rate | 100 Mbit/s per port |
| Fiber Type | Multimode |
| Maximum Link Distance | Up to 5 km |
| Documented Platform | SCALANCE S627-2M |
| Packaging Dimensions | 275.5 x 120.3 x 22.3 mm |
| Net Weight | 0.136 kg |
| Country of Origin | Germany |
The module is suited to compatible modular SCALANCE equipment requiring two multimode optical Fast Ethernet links. Its BFOC connector format and host-device support must match the installed network hardware.
Industrial Ethernet fiber uplinks, electrically isolated plant segments, longer-distance machine networks and SCALANCE security or switching installations with supported media-module slots.
Verify the host SCALANCE model, available media-module slot, BFOC fiber connectors, multimode fiber specification, link distance and required 100 Mbit/s operation. The exact suffix must match the installed engineering documentation.
Share the full nameplate, required quantity, destination and system context for an accurate commercial response.
Verification, inspection, packaging and logistics support for Siemens 6GK5991-2AB00-8AA0
Our process is designed to give purchasing teams and engineers clear evidence before shipment. Each request is handled around the exact order number, condition requirement and destination rather than a generic product description.
| Service Step | What We Check |
|---|---|
| Model and Suffix Verification | The complete Siemens order number, suffix and visible revision markings are compared with the request. |
| Condition Confirmation | Packaging, seals, enclosure condition and included items are reviewed against the offered condition. |
| Technical Compatibility Review | Available labels, interfaces, connector arrangements and customer-provided system details are compared before approval. |
| Product and Label Photos | Clear inspection images can be supplied for model, revision, connector and condition confirmation. |
| Protective Packaging | Antistatic protection, cushioning and an outer carton are selected for industrial electronic modules. |
| Worldwide Shipping | Available carrier options are coordinated according to destination, package requirements and applicable restrictions. |
| Tracking and Customs Documents | Shipment tracking and standard commercial documents are prepared for the selected route. |
| Warranty and Returns | Written warranty terms and the return authorization process are provided with the commercial agreement. |
| After-Sales Response | Our team follows up on documentation, shipment status and reported product issues. |
Before dispatch, the team checks the visible manufacturer label, order number, revision markings, physical condition and available accessories. Product evidence is compared with the quotation and buyer requirements. Packaging and shipping documents are then prepared for the agreed transport route. This process supports traceable communication without promising unverified quantities or fixed delivery times.
Look for complete company contact details, clear product identification, inspection evidence, written commercial terms and a documented after-sales process.
Confirm the quotation, full order number, product-label photos, condition statement, warranty scope, shipping terms, customs documents and return authorization procedure.
Compare the complete model and suffix, hardware revision, connectors, rack location, power arrangement, signal assignment and project configuration with the installed system.
Warning signs include an incomplete model number, refusal to provide label photos, conflicting specifications, unclear condition descriptions and no explained return process.
Email and WhatsApp details are provided for model verification, inspection requests, packaging coordination and shipping support.
Email: sales6@apterpower.com | WhatsApp: +86 18159889985
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Email: sales6@apterpower.com | WhatsApp: +86 18159889985
