178 9424200994 Rev Nto an alternate setting group that can accommodate the condition. The BE1-11g can be set to alarm forthis condition using the programmable logic alarms.The BE1-11g has the logic to automatically change setting groups based upon the status of the fuse loss(60FL).Automatic Control by Monitoring Line CurrentThe setting group Switch Threshold and Return Threshold settings determine how the function selects theactive setting group when automatic selection is enabled.Automatic control of the active setting group allows the BE1-11g to automatically change configuration foroptimum protection based on the current system conditions. For example, in locations where seasonalchanges can cause large variations in loading, the overcurrent protection can be set with sensitivesettings during the majority of the time and switch to a setting group with lower sensitivity (higher pickups)during the few days of the year when the loading is at peak.The BE1-11g will switch to a setting group when current rises above the "switch threshold" for the "switchtime" and will return from the setting group when current falls below the "return threshold" for the "returntime." However, if the Switch Threshold is 0 and a nonzero switch-to time is entered, the BE1-11g willchange to the indicated setting group after the switch-to time.If a group's switch threshold is zero, the group’s switch time delay is zero, and current is being monitored,then the BE1-11g will never automatically switch to that setting group.Five settings for each group are used for automatic control. Each group has a Switch Threshold andSwitch Time, a Return Threshold and Return Time, and a Monitor Setting. The Switch and Returnthresholds are set in amps. If you wish to switch settings based upon loading, you could set the MonitorSetting to Max Phase Current. If you wish to switch settings based upon unbalance, you could set it toNeutral Current, or Negative-Sequence Current.This function can also be used to automatically change the active setting group for cold load pickupconditions. If the Switch Threshold for a group is set to 0 amps, the function will switch to that group whenthere is no current flow for the time delay period, indicating that the breaker is open or the circuit source isout of service.Note the difference in operation when a switch threshold of 0.5 amps is used. For this setting, the group isselected when current rises above 0.5 amps.When the Switch criteria are met for more than one setting group at a time, the function will use thenumerically higher of the enabled setting groups. If the switch-to time delay setting is set to 0 for a settinggroup, automatic control for that group is disabled. If the return time delay setting is set to 0 for a settinggroup, automatic return for that group is disabled and the BE1-11g will remain in that setting group untilreturned manually by logic override control.Group Control by Monitoring Fuse Loss StatusThe active setting group can also be controlled by the status of the fuse loss function (60FL). TheBE1-11g can be instructed to change to Setting Group 1. If the monitored element is 60FL, the switchthreshold, return time, and return threshold are ignored.Logic ConnectionsSetting group logic connections are made on the BESTlogicPlus screen in BESTCOMSPlus. The settinggroup logic block is illustrated in Figure 119. Logic inputs and outputs are summarized in Table 70.Setting Groups BE1-11g
