General
Number of ports	10
SFP ports	2x
10/100TX ports	7x
Operating temperature	-40 °C

The MICROSENS MS650869M-V2 is a managed Industrial Switch from the Profi Line, designed for use in demanding industrial environments, particularly in rail vehicle and power supply applications. The device features 10 ports, including a combo interface (1x 10/100/1000T or 100/1000X), two SFP ports for fiber connections (100/1000X), seven 10/100TX ports, and two 24VDC PoE ports. This configuration allows flexible connection of various network devices, with the SFP ports supporting the use of single-mode or multimode transceivers. The PoE function supplies compatible end devices with power via the network cable, simplifying the installation of IP cameras or access points without additional power sources.

Applications

The switch is designed for use in rail systems and power supply networks, where high reliability and environmental robustness are required. It complies with rail certification according to EN50121-4:2006 and EN50125-3:2003, as well as EVU certification in accordance with IEC 61850-3 and IEEE 1613. These standards ensure functionality under extreme conditions, such as those found in vehicles, subways, or power supply installations. The operating temperature range of -40 °C to +75 °C makes it suitable for outdoor use or climate-challenged indoor environments.

Functions and Features in Detail

The switch offers extensive networking functions, including VLAN, QoS (Quality of Service), IGMP Snooping, and STP/RSTP (Spanning Tree Protocol). These functions enable targeted network control, prioritization of data traffic, and prevention of network loops. VLAN support allows logical segmentation of network areas, enhancing security and management. IGMP Snooping optimizes multicast traffic, especially for video transmissions. STP/RSTP functions ensure redundant network topology and prevent broadcast storms.

Technology Explained Simply

A key feature is the fault-tolerant fiber ring, enabling reconfiguration within less than 20 ms. This ensures high network availability, even in the event of individual link failures. The SFP ports support dual speed 100/1000 MBit/s, allowing flexible adaptation to existing infrastructures. The PoE version supplies end devices via Ethernet cable, reducing the number of required power sources. DIN rail mounting simplifies installation in enclosures.

Compatibility and Accessories

For use with the switch, compatible power supplies with rail certification are available, providing 24 VDC or 48 VDC with a power output of 60 W. These power supplies are designed for use in rail applications and ensure safe power delivery. As accessories, SFP transceivers are available, including models for multimode (850 nm, SX) and single-mode (1310 nm, LX, up to 10 km reach), both with DDM (Digital Diagnostic Monitoring) and an operating temperature range of -40 °C to +85 °C. These transceivers enable fiber optic connections, which are required for long distances or noise-free transmission.

Mounting and Installation

The switch is designed for DIN rail mounting, enabling standardized installation in enclosures. Installation is done by simply hanging the device onto the rail. The PoE ports require no additional power supplies for connected devices, provided they are PoE-compatible. Network connections are established via Ethernet cables (RJ45) or fiber (SFP). Configuration is performed via a web interface or CLI, with detailed instructions provided in the documentation.

Operational Advantages

The combination of high operating temperature, rail and EVU certification, and fault-tolerant ring topology makes the switch particularly suitable for critical infrastructures. Integrated functions such as VLAN, QoS, and IGMP Snooping enable efficient network management. The PoE function reduces the number of required power supplies and simplifies installation. The SFP ports offer flexibility in choosing transmission media, facilitating adaptation to existing networks. The fast reconfiguration of the fiber ring ensures high network availability.