3-22 C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUALWIRING CHAPTER 3: INSTALLATION3Figure 3-20: RTD connections3.3.8 RS232 faceplate portA nine-pin RS232C serial port is located on the faceplate for programming with a computer. All that is required to use thisinterface is a computer running the EnerVista UR Setup software provided with the relay. Cabling for the RS232 port isshown in the following figure for both 9-pin and 25-pin connectors.The baud rate for this port can be set, with a default of 19200 bps.Figure 3-21: RS232 faceplate port connection3.3.9 CPU communication ports3.3.9.1 OverviewIn addition to the faceplate RS232 port, there is a rear RS485 communication port.Three-wire shielded cableRTD terminalsMaximum total lead resistance:25 ohms for Platinum RTDsRoute cable in separate conduit fromcurrent carrying conductorsRTD859736A1.CDRRTD terminalsRTDRTDFor RTDRTDSURGE~1~1 & ~2~2~8b~1a~1b~2aHotHotReturnCompComp ~2c~1c
