Hirschmann MM20-m2 t1 t1 sahh managed Ethernet switches
Port Configuration: 4 M12 D-coded Ethernet ports with 10/100 Mbps transmission rate, which are suitable for connecting industrial devices that do not require extremely high transmission rate but need certain anti-interference ability, such as field sensors, small controllers, etc. 4 M12 X-coded Ethernet ports with a transmission rate of up to 1,000 Mbps, which can meet the needs of high-speed data transmission, such as high-definition cameras, industrial robots. 2 Gigabit copper ports (RJ45 interface), which can be used to transmit data, such as HD cameras, industrial robots. 4 M12 X-coded Ethernet ports with a speed of up to 1000 Mbps, which can meet the demand for high-speed data transmission of devices, such as high-definition cameras, industrial robots, etc. 2 Gigabit copper ports (RJ45 connector), which can be used to connect servers, routers and other devices, to facilitate the construction of a high-speed and stable network backbone link.

Data exchange capability: supports full-duplex and half-duplex modes, which can be flexibly selected by users according to the connection requirements of the devices and the network environment, providing convenience in terms of device compatibility and network resource utilisation. High-speed data transmission performance, suitable for industrial automation and transport systems and other areas requiring high real-time data, to ensure that a large amount of data can be transmitted quickly and stably.
Power supply and power consumption: The input voltage is 24V DC, which is a common power supply specification in the industrial field, and is easy to be connected to the existing power supply system of the factory. Typical operating power consumption is low, which meets the needs of energy-efficient industrial networks and can effectively reduce operating costs.

Environmental compatibility: The operating temperature range of -40°C to +70°C allows the unit to operate in cold outdoor environments or in hot industrial plants under severe temperature conditions. The protection level meets IP65/IP67 standard, with excellent dustproof and waterproof ability, which can effectively resist dust, water splash and other external factors. Anti-vibration and anti-shock performance in line with industrial standards, vibration and shock in industrial environments (such as factories, production lines, rail vehicles) can also operate stably.

Network protocol support: VLAN (Virtual Local Area Network), which can divide the network into multiple logical subnets to improve network security and management efficiency, such as dividing equipment in different production areas into different VLANs to achieve data isolation. Supports QoS (Quality of Service), which assigns different priorities to different types of data (e.g., voice, video, control commands, etc.) to ensure the transmission quality of critical data. Supports port mirroring, which is convenient for network administrators to monitor and analyse network traffic and detect network failures or abnormalities in time. Support RSTP (Rapid Spanning Tree Protocol), MSTP (Multiple Spanning Tree Protocol) and other redundancy protocols to enhance network stability, and when a link failure occurs in the network, it can be quickly switched to the backup link to ensure that network communication is not interrupted.

Management Function: Support SNMP (Simple Network Management Protocol), which can realise remote network management, and administrators can monitor and configure the switch through the network. Web management interface, intuitive and convenient operation, no need for professional command line operation skills, reducing the threshold of management. Supports CLI (command line) configuration, providing professional network engineers with more accurate and flexible configuration methods.

Applicable Scenarios: In the field of industrial automation, it is suitable for factory production lines and automation control systems, which can realise efficient interconnection of all kinds of equipments and ensure real-time transmission of data and timely issuance of control commands in the production process. In the field of rail transport and traffic management, it can be deployed in train communication, underground signalling system, road monitoring and other scenarios to ensure the reliable operation of the transport system. In the field of energy and public utilities, it is suitable for substation automation and remote monitoring system to ensure the network stability of energy supply and facility monitoring. In intelligent buildings and security monitoring, it can ensure stable networking of security monitoring equipment and real-time monitoring and security protection of buildings.

Various port configurations: Equipped with 4 M12 D-coded Ethernet ports with a transmission rate of 10/100 Mbps. These ports are widely used in industrial sites to provide stable and adaptable network transmission speeds when connecting devices such as sensors and small controllers. For example, in factory automation lines, a large number of temperature and pressure sensors can be connected to the control system through these ports to ensure that the collected data is transmitted in a timely manner. 4 M12 X-coded Ethernet ports with a speed of up to 1000 Mbps are suitable for connecting bandwidth-demanding devices, such as high-definition cameras, industrial robots, and so on. In the machine vision inspection of smart factories, a large amount of image data generated by HD cameras can be quickly transmitted through these high-speed ports to meet the needs of real-time inspection and analysis. There are also 2 Gigabit copper ports (RJ45 ports), which are convenient for connecting core network devices such as servers and routers, facilitating the construction of a high-speed and stable network backbone link, and realising efficient data interaction between different network areas.

Powerful data exchange capability: Supports full-duplex and half-duplex modes, which can be flexibly selected by users according to the actual needs of equipment connection and network environment. It provides great convenience in device compatibility and network resource utilisation. In industrial networks where old and new devices are mixed, the appropriate working mode can be selected according to the communication modes of different devices to ensure network interconnection. With high-speed data transmission performance, it is suitable for industrial automation and transport systems and other fields that require high real-time data. In the automated production line of automobile manufacturing, a large amount of control commands and production data need to be interacted in real time among various devices, and the switch can ensure the fast and stable transmission of such data to guarantee the efficient and stable operation of the production line.

Outstanding environmental adaptability: With an operating temperature range of -40°C to +70°C, the switch can work normally in cold outdoor environments (e.g., connecting network devices in polar research stations) or hot industrial plants (e.g., steel smelting workshops), ensuring uninterrupted network connections. The protection level meets IP65/IP67 standard, with excellent dustproof and waterproof ability. In dusty mining environments or on the decks of ships prone to water splashes, it can effectively resist the intrusion of dust and water, protect the internal circuitry and extend the service life of the equipment. Anti-vibration and anti-shock performance in line with industrial standards, in the vibration and shock of industrial environments (such as factories, production lines, rail vehicles), can be solidly maintained in the working state, to maintain the stable operation of the network.

Comprehensive network protocol support: Support for VLAN (Virtual Local Area Network) allows users to divide the network into multiple logical subnets to improve network security and management efficiency. For example, in large factories, devices in different production areas can be divided into different VLANs to achieve data isolation, preventing data interference between different areas and facilitating traffic control and resource allocation. It supports QoS (Quality of Service), which assigns different priorities to different types of data (e.g., voice, video, control commands, etc.) to ensure the transmission quality of critical data. In remote monitoring systems, video data and control commands can be given higher priority to ensure smooth monitoring images and timely delivery of control commands. Support port mirroring function, which is convenient for network administrators to monitor and analyse network traffic, detect network failure or abnormality in time, and ensure normal operation of the network. Support RSTP (Rapid Spanning Tree Protocol), MSTP (Multiple Spanning Tree Protocol) and other redundant protocols to enhance network stability. When a link failure occurs in the network, it can be quickly switched to the backup link to ensure that network communication is not interrupted, and enhance the reliability of the network.

Convenient and efficient management function: Support SNMP (Simple Network Management Protocol), which can achieve remote network management, administrators can monitor and configure the switch through the network, without the need to visit the site, improving management efficiency. Web management interface, intuitive and convenient operation, no need for professional command line operation skills, lowering the threshold of management, ordinary technicians can easily get started. Supports CLI (command line) configuration, providing professional network engineers with more accurate and flexible configuration methods to meet the advanced configuration needs of complex network environments.

Heat dissipation speculation
Natural Heat Dissipation: Many industrial Ethernet switches use natural heat dissipation, which is achieved by the large metal surface area of the device casing. MM20-M2T1T1SAHH may also make use of this method, as its casing is designed to have a large surface area for heat dissipation, and the metal casing is able to absorb the heat generated by the switch’s internal electronic components quickly, and emit the heat into the surrounding air. This way, in some industrial scenarios where the heat dissipation requirements are not particularly high and the ambient temperature is relatively stable, natural heat dissipation alone can satisfy the temperature requirements for normal operation of the switch. For example, in the indoor office automation network environment where the heat generated by the equipment is small, the natural heat dissipation can ensure the stable operation of the switch.

Heat sinks: To enhance heat dissipation, some of Hirschmann’s switches may be equipped with heat sinks on key heat-generating components. the MM20 – M2T1T1SAHH may also be equipped with heat sinks, which are usually made of metals with good thermal conductivity, such as aluminium or copper. They fit snugly on the surface of heat-generating components like chips, greatly increasing the heat dissipation area and speeding up the rate at which heat is dissipated. When the switch is in operation, heat is conducted from the heating element to the heat sink, and then emitted from the heat sink to the surrounding environment, effectively reducing the temperature of the component.

Optimisation of heat dissipation in a compact structure: Considering the compact design of the switch and its limited internal space, the design of the heat dissipation system needs to make full use of the limited space. A design that combines heat dissipation channels with the internal layout may be adopted to ensure that air can flow reasonably inside the switch and carry away heat. For example, the design of the circuit board will plan the location of heat-generating components so that air can flow smoothly through these components to improve heat dissipation efficiency. At the same time, reasonable arrangement of internal wiring, to avoid the line to block the air flow, to ensure that the heat can be smoothly transferred to the shell or heat sink for dissemination.

Adaptation to harsh environments: As an industrial switch, it needs to work in a variety of harsh environments, and its heat dissipation system should be able to adapt to different environmental conditions. In a high temperature environment, the cooling system should ensure that the switch will not overheat and performance degradation or failure; in a low-temperature environment, it should prevent the electronic components from unstable performance due to low temperature. Therefore, the cooling system may have certain temperature adjustment functions, such as intelligent control of the heat dissipation efficiency of the heat sink, to maintain the appropriate working temperature inside the switch in different temperature environments.

Influence of Heat Sink on Switch Performance
Ensure stable operation: A good heat dissipation system is essential to maintain the stable operation of the switch. If the heat dissipation is poor and the internal temperature of the switch is too high, it will lead to the performance degradation of electronic components, data transmission errors, port failures and other problems, which will seriously affect the stability and reliability of the network. An effective heat dissipation system ensures that the internal temperature of the switch remains within a reasonable range over a long period of time, guaranteeing the normal operation of the ports and maintaining high-speed and stable data transmission.

Extend service life: A proper heat dissipation system helps to extend the service life of the switch. When the electronic components work under the appropriate temperature, their aging rate will be significantly slowed down, thus reducing the equipment failure caused by component damage.MM20 – M2T1T1SAHH’s cooling system can effectively control the temperature, which can reduce the failure rate of the components, so that the switch can operate stably for a long period of time in industrial environments, and reduce the cost of equipment replacement and maintenance.