ABB IEMMU21

1.Technical Parameters

Rated operating voltage: 380-480V AC

Control power supply voltage: 24V DC

Withstand voltage: 2.5kV AC

Measuring range: 0.5-100A

Overload protection setting: 20%-100% rated current

Accuracy: ±1% full scale

Operating temperature: -25°C to +55°C

Storage temperature: -40°C to +70°C

Ambient humidity: ≤95% RH

2. Function Features

Reliable media conversion capability: The main function of ABB IEMMU21 is to provide highly reliable media conversion. This allows Ethernet networks to extend to greater distances by converting between different physical media such as copper and fiber optic Ethernet. Fiber optic cables have low attenuation characteristics, allowing data to be transmitted over longer distances than copper wire. This type of converter helps to accurately and efficiently convert and transmit data from one media to another media type, thereby minimizing data loss and errors. In industrial applications, reliable data transmission is critical; any data loss can lead to production downtime or product defects.

High-quality industrial design: ABB IEMMU21 features an industrial design and is durable enough to be used in any industrial environment. Its rugged housing protects against vibration, shock, and electromagnetic interference (EMI) common in industrial environments. In a manufacturing plant, for example, strong vibrations and EMI generated by equipment can be disruptive. Its rugged construction allows it to withstand such external factors and, over distances of several kilometers, makes it an excellent communication tool in harsh conditions.

3. Application areas

Oil and Gas: ABB IEMMU21 is used in both upstream and downstream of the oil and gas industry. For example, in upstream oil production, it can connect sensors that check pressure, flow and level in oil wells (connected via copper Ethernet) to a fiber optic network that transmits data to a control center. In downstream operations, such as refineries, it can connect different control systems of upstream refining processes (including distillation columns and cracking units, connected via copper Ethernet) to a fiber optic network for remote monitoring and control.

Smart Grid: ABB IEMMU21 is used to interconnect multiple devices of smart grid infrastructure components in the distribution network. It can convert between copper Ethernet used within a local substation and fiber Ethernet used for long-distance communication between the substation and the central control center. This allows real-time monitoring and control of the grid, including load balancing, voltage regulation and fault detection. For example, sensors located in a local substation can be connected via copper Ethernet to measure power consumption and grid voltage, among other things. It can convert this data into fiber Ethernet and send it to the control center, where operators can make decisions to improve the performance of the grid.

Railway transportation: In railway transportation, ABB IEMMU21 is used to connect the track fiber optic communication network to the train onboard control system. This enables important data including train speed, location and diagnostic information to be sent to the control center. In addition to this, it is also used to connect the communication systems of different systems within the railway station, such as connecting CCTV cameras to the central monitoring system to ensure the safety of the railway as expected.

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