Module DescriptionGalvanic RJ45 Ethernet SFPs Small form factor pluggable for EthernetcommunicationGalvanic RS485 communication module(RS485)Module used for DNP3 and IEC 60870-5-103communicationIRIG-B Time synchronization module (IRIG-B) Module with 2 inputs. One is used for handlingboth pulse-width modulated signals and amplitudemodulated signals and one is used for opticalinput type ST for PPS time synchronization.22.2.2 Numeric module (NUM) IP14288-1 v222.2.2.1 Introduction M12643-3 v3The numeric processing module (NUM) is a CPU module that handles allprotection functions and logic.For communication with high speed modules, for example analog input modulesand high speed serial interfaces, NUM is equipped with a Compact PCI bus. NUMis a compact PCI system card, that is, it controls bus mastering, clock distributionand receives interrupts.NUM provides up to 4 optical (type LC) or galvanic (type RJ45) Ethernetports(one basic and three optional).22.2.2.2 Functionality M12644-3 v5The numeric module (NUM) is a high-performance CPU module based on a dual-core processor. It is 6U high and occupies one slot. Contact with the backplane isachieved via a compact PCI connector and an euro connector.The NUM has two PC-MIP expansion slots where mezzanine cards, such as theLDCM, can be mounted. It also has four SFP cages for Ethernet communication.Up to four SFP transceivers for optical 100BASE-FX or galvanic RJ45 100BASE-TX communication can be mounted in the SFP cages.Only SPF transceivers approved by ABB (1MRK005500) arecompatible with the SFP cages.Application code and configuration data are stored in flash memory, and non-volatile RAM is used to store log data.The NUM is equipped with a real time clock. It uses a capacitor to keep track ofthe time when the IED is not energized.The NUM is passively cooled, which is possible due to its low power dissipation.Section 22 1MRK 505 394-UEN AIED hardware812 Line differential protection RED650 2.2 IECTechnical manual
