5-196 N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUALCONTROL ELEMENTS CHAPTER 5: SETTINGS5Figure 5-96: Acknowledge modeApplication exampleConsider an application where the selector switch is used to control setting groups 1 through 4 in the relay. The settinggroups are to be controlled from both user-programmable pushbutton 1 and from an external device via contact inputs 1through 3. The active setting group is to be available as an encoded three-bit word to the external device and SCADA viaoutput contacts 1 through 3. The pre-selected setting group is to be applied automatically after five seconds of inactivityof the control inputs. When the relay powers up, it is to synchronize the setting group to the three-bit control input.Make the following changes to setting group control in the SETTINGS CONTROL ELEMENTS SETTING GROUPS menu:SETTING GROUPS FUNCTION: “Enabled”SETTING GROUPS BLK: “Off”GROUP 2 ACTIVATE ON: “SELECTOR 1 POS 2"GROUP 3 ACTIVATE ON: “SELECTOR 1 POS 3"842736A1.CDRSTEP-UPACK3BIT A03BIT A13BIT A23BIT ACKPOS 1POS 2POS 3POS 4POS 5POS 6POS 7BIT 0BIT 1BIT 2pre-existingposition 2changed to 4 witha pushbuttonchanged to 1 witha 3-bit inputchanged to 2 witha pushbuttonSTP ALARMBIT ALARMALARM
