CHAPTER 3: INSTALLATION INSTALL SOFTWAREB30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-453Figure 3-52: Relay communication optionsTo communicate through the B30 rear RS485 port from a computer RS232 port, the GE Grid Solutions RS232/RS485converter box is required. This device (catalog number F485) connects to the computer using a straight-through serialcable. A shielded twisted-pair (20, 22, or 24 AWG) connects the F485 converter to the B30 rear communications port. Theconverter terminals (+, –, GND) are connected to the B30 communication module (+, –, COM) terminals. See the CPUCommunication Ports section in chapter 3 for details. The line is terminated with an R-C network (that is, 120 Ω, 1 nF) asdescribed in this chapter.3.6.2 System requirementsThe relay front panel or the EnerVista UR Setup software can be used to communicate with the relay. The softwareinterface is the preferred method to edit settings and view actual values because the computer monitor can display moreinformation.The minimum system requirements for the EnerVista software are as follows:• Intel Pentium processor (dual core)• Microsoft Windows 7 with Service Pack 1 (32-bit or 64-bit) or Windows Server 2008 Release 2 with Service Pack 1 (64-bit)• 1 GB free hard drive space• 2 GB RAM• 1280 x 800 display screen
