CHAPTER 5: SETTINGS TRANSDUCER INPUTS/OUTPUTSG60 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5-3775RTD INPUT H1 TRIP VOTING — Allows securing trip signal by voting with other RTDs. A value of “None” indicates that elementoperates individually and no voting takes place.A value of “Group” indicates that element is allowed to issue a trip if N – 1 of other RTDs of the same group pick up as well(where N is the number of enabled RTDs from the group). For example, if three RTDs are assigned to the same group, thereneeds to be at least one additional RTD of the same group picked up to issue a trip command.The “RTD Inp H1” through “RTD Inp W8” values indicate that element is allowed to issue a trip if the corresponding peer RTDis also picked up.RTD INPUT H1 OPEN — Allows monitoring of an open RTD sensor circuit. If this functionality is not required, then a value of“None” disables monitoring and assertion of output operands. If set to “Alarm”, the monitor sets an alarm when a brokensensor is detected. If set to “Block,” the monitor sets an alarm and simultaneously blocks RTD operation when a brokensensor is detected.If targets are enabled, a message appears on the display identifying the broken RTD. If this feature is used, it isrecommended that the alarm be programmed as latched so that intermittent RTDs are detected and corrective action canbe taken.RTD INPUT H1 BLOCK — This setting is used to block RTD operation.Figure 5-222: RTD input protection logic5.10.3 RRTD inputs5.10.3.1 MenuSETTINGS TRANSDUCER I/O RRTD INPUTSMenus are available to configure each of the remote RTDs.It is recommended to use the G60 to configure the RRTD parameters. If the RRTDPC software is used to change the RRTDsettings directly (the application and type settings), then one of the following two operations is required for changes to bereflected in the G60:• Cycle power to the G60• Break then re-establish the communication link between the RRTD unit and the G60. This causes the RRTD COMM FAILoperand to be asserted then de-asserted. RRTD INPUTS RRTD 1See below RRTD 12
