PFC controller family adds functionality
TDK Corporation announced two new types of the BR7000 Series of EPCOS power factor controllers. The BR7000-T power factor controller offers 15 transistor outputs instead of 15 relay outputs. It is designed for applications that require fast switching operations and enables delay-free switching of thyristor modules. The second addition is the EPCOS BR7000-I with an RS-485 interface, which can be used for embedding into networks, for controller coupling and for visualization via PC. The BR7000-T offers various control modes, for example, switching of 15 steps with three-phase capacitors, switching of 15 single-phase steps in L-N or L-L operation, or mixed operation. The switch on and off times of capacitor steps can be selected between 50 and 1000 milliseconds. The BR7000-T has an illuminated graphic display; the BR7000-T/HD has an OLED display to ensure better visibility in poor lighted surroundings. The BR7000-I/S485 is delivered with Windows-based BR7000-SOFT software and allows the evaluation and further processing of measured grid data via PC. The additional external input of the BR7000-I/S485 can be individually programmed, for example, for a second set of parameters. Also, the controller features a freely programmable message-relay, for instance, to trigger a fan or for status messages. An internal clock marks all recorded values and messages with a time stamp, allowing a better evaluation of all values. The operating voltage covers 110 V AC to 230 V AC with a very low consumption of < 3 VA when all outputs are activated.
TDK Corporation, www.epcos.com