SCALANCE MM991-2LD BFOC Optical Media Module
Siemens
6GK5991-2AC00-8AA0
Germany
12 Months
| Sales | Phone/Whatsapp | |
| Jim Pei | [email protected] | +86 18020776782 |
| Model Number | 6GK5991-2AC00-8AA0 |
| Product designation | MM991-2LD (BFOC) |
| Optical ports | 2 |
| Transmission rate per port | 100 Mbit/s |
| Ethernet standard | IEEE 802.3; 100Base-FX |
| Optical connector | ST/BFOC |
| Optical fiber | 9/125 µm single-mode glass fiber |
| Optical wavelength | 1310 nm |
| Optical link range | 0–26 km; dependent on fiber and link loss |
| Transmitter output power | −15 to −8 dBm |
| Receiver sensitivity | −34 dBm |
| Maximum receiver input power | −3 dBm |
| Minimum required link attenuation | 0 dB |
| Maximum fiber attenuation per kilometer | 0.5 dB/km at 1310 nm |
| Maximum insertion loss | 0.5 dB |
| Maximum permitted fiber cable attenuation | 14 dB with 2 dB link power margin |
| Link power margin | 2 dB |
| Power supply | 24 V DC SELV, supplied by the SCALANCE host only |
| Current consumption | 80 mA |
| Effective power loss | 2.04 W |
| Operating temperature | −40 to +70 °C; subject to host, mounting orientation and hardware version |
| Storage and transport temperature | −40 to +85 °C |
| Operating relative humidity | ≤95% at 25 °C; non-condensing |
| Degree of protection | IP20 |
| MTBF reference | 115 years; reference ambient temperature 40 °C |
| Ambient-temperature derating from 2,000 m | 5 °C below the maximum operating temperature |
| Ambient-temperature derating from 3,000 m | 10 °C below the maximum operating temperature |
| Vertical X-300M / XR-300M operating temperature | −40 to +50 °C; hardware product version 02 |
| Module fastening | Latched into a media-module slot |
| Electrical safety standards | UL 60950-1; CSA C22.2 No. 60950-1 |
| Electromagnetic emissions | EN 61000-6-4:2007; Class A |
| Electromagnetic immunity | EN 61000-6-2:2005 |
| Minimum Order Quantity | 1 Piece |
| Price | Contact for Jim |
| Packaging Details | Original new Factory Sealed |
| Delivery Time | 3–7 Days |
| Payment Terms | T/T |
| Shipping Method | DHL / FedEx / UPS / TNT |
| Supply Ability | In stock |
Siemens 6GK5991-2AC00-8AA0 is the SCALANCE MM991-2LD optical media module with BFOC connections. It provides two 100 Mbit/s optical ports for compatible modular SCALANCE devices. The interfaces use single-mode glass fiber at a wavelength of 1310 nm. Fiber links can extend up to 26 km when the specified attenuation limits are met. The module draws its operating power from the host SCALANCE device.
The 6GK5991-2AC00-8AA0 adds long-distance optical connectivity to the industrial Ethernet installation. Its plug-in construction integrates the optical interfaces into the supported host system. The BFOC connector version must be matched to the existing fiber termination. Select the host, module revision and installation arrangement together when planning operating conditions. Confirm the complete article number before ordering a replacement for an installed SCALANCE network.
Connect separated industrial Ethernet network sections through single-mode fiber where a supported modular SCALANCE device provides the host platform.
Add the required optical interfaces within a compatible media-module slot, keeping the fiber connections integrated with the host network device.
Replace the matching BFOC media module in an existing installation after checking the article number, fiber terminations and host compatibility.
This article is the ST/BFOC version. Check the installed connector style before ordering; the SC version is a different article.
No. It is a media module powered by its compatible SCALANCE host, rather than an independently powered Ethernet switch.
Use the specified single-mode glass fiber and matching BFOC terminations. Check the complete link attenuation, including connectors and splices.
Each item undergoes inspection before delivery. Ask Jim for the available unit’s condition, nameplate photos and inspection details with your quotation.
The quoted product is supplied with a 12-month warranty, subject to the applicable terms and conditions.
We arrange dispatch immediately after payment is received for confirmed available stock. Jim will confirm the carrier and shipment schedule with your order.
With 20+ years of industry experience, we serve customers worldwide and have built long-term relationships across the UK, Russia, UAE, India, Venezuela, and more.
Our experienced team provides reliable pre-sales and after-sales support, helping customers select suitable products and resolve purchasing concerns.
We supply leading automation brands covering PLCs, DCS, I/O modules, drives, motors, power supplies, communication modules, and more.
A wide range of products is available from stock, including discontinued, obsolete, and hard-to-find parts, helping reduce sourcing time.
We value long-term cooperation and treat every customer with honesty, respect, responsibility, and care.
From a single replacement part to complete automation projects, we are ready to support your needs and build a long-term partnership.
A Germany customer urgently needed a replacement for a discontinued automation component. After reviewing the product label, technical parameters, and application details, our engineers recommended a compatible alternative and provided photos and test videos before shipment. The alternative performed well, enhancing the customer's confidence in our technical capabilities and leading to multiple repeat orders.
An Indian customer still had doubts after initial online communication with us, so they visited our company in person for a face-to-face meeting and product inspection. This visit increased the customer's trust and led to the successful placement of their first order. Over the next few years, we completed multiple orders and established a stable, long-term partnership.
A Malaysia customer needed a specific automation component and compared products and services from several suppliers online. After nearly three weeks of careful consideration, our sincere communication, professional service, and reliable product quality won the customer's trust. After receiving the product and using it for several weeks without any problems, the customer gave us positive feedback and subsequently placed multiple orders.
| PCB/DIOS002 BJ0002G2A | XF821A | CM-1-439 |
| RX1210T | EDA61K-HB-0 | DLAF8000 |
| 2865120_ PI-EX-DO/REL-S | OK34A | 2708371 PSI-MOS-RS232/FO |
| GX1230 | XJBO3-5928-1 | VROM-160 SUM D59B |
| SR2 B121B | XJBO3-5921-1 | MA1480B |
| IDS 850 NG851 | Epxpns101-Abac | VIO-25/60 |
| N3511RA-M | 1GR5 | DM-TX-4K-302-C |
| PGM-2602 M032-4111-200 | SF230A-S2 | OAW-AP1201H-RW |
| REG-K 12X230/16 | SL0101 SLG23CEEAK0A | TM200CE24R |
| CV490 490-4AA00-0AA2 | 7KG2109-2ZZ13-9B | REF.04813 |
| PR24D06-2CO-M-B5/P | CRT341 | R0F1314228/5 TVM113-013 |
| EW300 | KN703-C | PXA30-K11 |
| Luna-TFT43 | DIV.2 H117-358 | IS-485L |
EN
