3-50 L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUALINSTALL SOFTWARE CHAPTER 3: INSTALLATION3To activate the relay using EnerVista software:1. Navigate to Settings > Product Setup > Installation and change the Relay Settings field to "Programmed."2. Save the change.3.6 Install software3.6.1 EnerVista communication overviewThe EnerVista UR Setup software communicates to the relay via the front panel RS232 port or the rear panel RS485 /Ethernet ports.To communicate via the RS232 port, use a standard straight-through serial cable. Connect the DB-9 male end to the relayand the DB-9 or DB-25 female end to the computer COM2 port as described in the CPU Communication Ports sectionearlier in this chapter.Figure 3-55: Relay communication optionsTo communicate through the L30 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 L30 rear communications port. Theconverter terminals (+, –, GND) are connected to the L30 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.
