CHAPTER 4: SETPOINTS SYSTEM889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 4–89OPEN RELAY SELECTRange: Off, Relay 1, ..., Relay XDefault: OffThis setpoints selects an output relay from the list of available output relays that is usedto open the Disconnect Switch once an open command is issued either from the frontpanel or remotely. This output relay is controlled from the Switch Control menu.CLOSE RELAY SELECTRange: Off, Relay 1, ..., Relay XDefault: OffThis setpoint selects an output relay from the list of available output relays that is usedto close the Disconnect Switch upon issued close command from either front panel orremotely. This output relay is controlled from Switch Control menu.FASTPATH:Refer to the section Output Relays for details on output relay selection availability.EVENTSRange: Disabled, EnabledDefault: EnabledThis setting disables or enables the disconnect switch operation events.TARGETSRange: Disabled, Self-Reset, LatchedDefault: EnabledThis setting disables or enables the disconnect switch operation Targets.The logic for Switch configuration and the Open, and Close status is shown in the followingtables.Table 4-20: Switch configuration with Open and Close statusTable 4-21: Switch status with both contacts 89a and 89b programmedContact Input 89asetpoint programming Contact Input 89bsetpoint programming Switch StatusOpen ClosedYes Yes 89a contact open89b contact closed89a contact closed89b contact openYes No 89a contact open 89a contact closedNo Yes 89b contact closed 89b contact openNo No Not Configured89a Contact Status 89b Contact Status Disconnect Switch StatusOff On SW[X] OpenedOn Off SW[X] ClosedOn On SW[X] Intermittent, SW[X]DiscrepancyOff Off
