Weidmüller developed the maxGUARD ELM-18 electronic load monitoring module (ELM) for particularly demanding loads in industrial 24 V DC power supply applications. Capable of load protection for up to 18 amps, it is one of the most powerful modules on the market. The module’s standout features include its space-saving design and operating temperature of up to +70 degrees Celsius. Thanks to a variant with ATEX certification and a protective coating, the module is suitable for even the most demanding applications – such as in the process industry, where the new electronic load monitoring system is already in use.
Moreover, a number of different applications require protection by a group switch, including control outputs, valves and lamps. The maxGUARD ELM-18 is the perfect solution to handle such challenges. With an adjustable tripping current of up to 18 amps, the module is also suitable for large loads, e.g. DC motors.
The ELM-1 LIM CL2 EX variant is used to protect small loads with high input capacitances, such as sensors. Load protection is also guaranteed for cable cross-sections less than 0.25 mm2. Both modules are approved for surge current protection in accordance with the UL 2367 semiconductor standard, and can also be used as group fuses for the simultaneous protection of multiple sensors.
The maxGUARD electronic system combines load monitoring and potential distribution in a single, space-saving component. On the mounting rail, this translates into a space savings of up to 50 %. Moreover, the closed, modular housing concept opens up a wide range of possible installation positions.
Weidmüller also supports its customers in configuring the load monitoring modules: in the Weidmüller Configurator, a client for digital engineering, customers can choose from all Weidmüller components to assemble their DIN rail according to their individual requirements – either by themselves or with the help of their regional sales contact. This opens up all new assembly options – ranging from paperless production to automated manufacturing. The Weidmüller Configurator provides all the necessary engineering data.
