https://es.mitsubishielectric.com/fa/ie_en/products/drv/inv/optionsibrake-resistors-filters-chokes-etc/drive-products-inverters-freqrol-options-brake-resistors-filters-chokes-etc-internal-option/fr-a7nc.html
FR-A7NC
The internal options comprise input and output extensions as well as communications options supporting the operation of the inverter within a network or
fr