29-4
9424200996
Setting Groups
BE1-11
m
to an alternate setting group that can accommodate the condition. The BE1-11
m
can be set to alarm for
this condition using the programmable logic alarms.
The BE1-11
m
has the logic to automatically change setting groups based upon the status of the fuse loss
(60FL).
Automatic Control by Monitoring Line Current
The setting group Switch Threshold and Return Threshold settings determine how the function selects the
active setting group when automatic selection is enabled.
Automatic control of the active setting group allows the BE1-11
m
to automatically change configuration for
optimum protection based on the current system conditions. For example, in locations where seasonal
changes can cause large variations in loading, the overcurrent protection can be set with sensitive
settings 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 BE1-11
m
will switch to a setting group when current rises above the "switch threshold" for the "switch
time" and will return from the setting group when current falls below the "return threshold" for the "return
time." However, if the Switch Threshold is 0 and a nonzero switch-to time is entered, the BE1-11
m
will
change 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 BE1-11
m
will never automatically switch to that setting group.
Five settings for each group are used for automatic control. Each group has a Switch Threshold and
Switch Time, a Return Threshold and Return Time, and a Monitor Setting. The Switch and Return
thresholds are set in amps. If you wish to switch settings based upon loading, you could set the Monitor
Setting to Max Phase Current. If you wish to switch settings based upon unbalance, you could set it to
Neutral Current, or Negative-Sequence Current.
This function can also be used to automatically change the active setting group for cold load pickup
conditions. If the Switch Threshold for a group is set to 0 amps, the function will switch to that group when
there is no current flow for the time delay period, indicating that the breaker is open or the circuit source is
out of service.
Note the difference in operation when a switch threshold of 0.5 amps is used. For this setting, the group is
selected 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 the
numerically higher of the enabled setting groups. If the switch-to time delay setting is set to 0 for a setting
group, automatic control for that group is disabled. If the return time delay setting is set to 0 for a setting
group, automatic return for that group is disabled and the BE1-11
m
will remain in that setting group until
returned manually by logic override control.
Group Control by Monitoring Fuse Loss Status
The active setting group can also be controlled by the status of the fuse loss function (60FL). The BE1-
11
m
can be instructed to change to Setting Group 1. If the monitored element is 60FL, the switch
threshold, return time, and return threshold are ignored.
Logic Connections
Setting group logic connections are made on the BESTlogic
Plus
screen in BESTCOMS
Plus
. The setting
group logic block is illustrated in Figure 29-3. Logic inputs and outputs are summarized in Table 29-2.
Summary of Contents for BE1-11m
Page 8: ...vi 9424200996 Revision History BE1 11m...
Page 12: ...x 9424200996 Contents BE1 11m...
Page 21: ...9424200996 1 9 BE1 11m Introduction Figure 1 1 Style Chart...
Page 22: ...1 10 9424200996 Introduction BE1 11m...
Page 40: ...3 6 9424200996 Controls and Indicators BE1 11m Figure 3 3 Front Panel Display Setup Screen...
Page 54: ...5 6 9424200996 Phase Undervoltage 27P Protection BE1 11m...
Page 56: ...6 2 9424200996 Negative Sequence Voltage 47 Protection BE1 11m...
Page 61: ...9424200996 7 5 BE1 11m Phase Overvoltage 59P Protection Figure 7 3 Overvoltage Settings Screen...
Page 62: ...7 6 9424200996 Phase Overvoltage 59P Protection BE1 11m...
Page 68: ...8 6 9424200996 Auxiliary Overvoltage 59X Protection BE1 11m...
Page 80: ...12 4 9424200996 Instantaneous Overcurrent 50 Protection BE1 11m...
Page 84: ...13 4 9424200996 Breaker Failure 50BF Protection BE1 11m...
Page 92: ...14 8 9424200996 Inverse Overcurrent 51 Protection BE1 11m...
Page 105: ...9424200996 18 3 BE1 11m Power Factor 55 Protection Figure 18 2 Power Factor Settings Screen...
Page 106: ...18 4 9424200996 Power Factor 55 Protection BE1 11m...
Page 110: ...19 4 9424200996 Resistance Temperature Detector 49RTD Protection BE1 11m...
Page 118: ...20 8 9424200996 Thermal Curve 49TC Protection BE1 11m...
Page 122: ...22 2 9424200996 Starts per Time Interval 66 Protection BE1 11m...
Page 124: ...23 2 9424200996 Restart Inhibit Protection BE1 11m...
Page 140: ...28 4 9424200996 Breaker Control Switch 101 BE1 11m...
Page 148: ...29 8 9424200996 Setting Groups BE1 11m...
Page 156: ...30 8 9424200996 Metering BE1 11m Figure 30 11 RTD Meter Screen...
Page 158: ...31 2 9424200996 Digital Points BE1 11m Figure 31 2 Digital Points Monitor Screen...
Page 177: ...9424200996 34 5 BE1 11m Motor Reporting Figure 34 9 Learned Motor Data Screen...
Page 178: ...34 6 9424200996 Motor Reporting BE1 11m...
Page 184: ...35 6 9424200996 Alarms BE1 11m...
Page 186: ...36 2 9424200996 Differential Reporting BE1 11m...
Page 196: ...38 4 9424200996 Demands BE1 11m...
Page 198: ...39 2 9424200996 Load Profile BE1 11m...
Page 208: ...41 6 9424200996 Trip Circuit Monitor 52TCM BE1 11m...
Page 212: ...42 4 9424200996 Fuse Loss 60FL BE1 11m...
Page 218: ...43 6 9424200996 BESTnet Plus BE1 11m Figure 43 8 Power Quality Page...
Page 221: ...9424200996 44 3 BE1 11m Mounting Figure 44 3 Case Side Dimensions...
Page 235: ...9424200996 45 5 BE1 11m Terminals and Connectors Figure 45 7 Example of Reversed CT Polarity...
Page 236: ...45 6 9424200996 Terminals and Connectors BE1 11m...
Page 269: ...9424200996 48 15 BE1 11m BESTlogic Plus Figure 48 4 Logic Page 1 for Default Logic...
Page 288: ...49 10 9424200996 Communication BE1 11m Figure 49 14 Modbus Mapping Screen...
Page 306: ...52 4 9424200996 Device Information BE1 11m...
Page 314: ...53 8 9424200996 Configuration BE1 11m Figure 53 3 Display Units Screen...
Page 318: ...54 4 9424200996 Introduction to Testing BE1 11m...
Page 330: ...56 6 9424200996 Commissioning Testing BE1 11m...
Page 336: ...58 4 9424200996 Phase Undervoltage 27P Test BE1 11m...
Page 340: ...59 4 9424200996 Phase Overvoltage 59P Test BE1 11m...
Page 352: ...60 12 9424200996 Auxiliary Overvoltage 59X Test BE1 11m...
Page 360: ...61 8 9424200996 Frequency 81 Test BE1 11m...
Page 364: ...62 4 9424200996 Instantaneous Undercurrent 37 Test BE1 11m...
Page 376: ...63 12 9424200996 Instantaneous Overcurrent 50 Test BE1 11m...
Page 396: ...65 16 9424200996 Inverse Overcurrent 51 Test BE1 11m...
Page 408: ...67 6 9424200996 Power 32 Test BE1 11m...
Page 412: ...68 4 9424200996 Loss of Excitation Reverse Var Based 40Q Test BE1 11m...
Page 426: ...70 10 9424200996 Thermal Curve 49TC Test BE1 11m...
Page 432: ...72 4 9424200996 Starts per Time Interval 66 Test BE1 11m...
Page 436: ...73 4 9424200996 Restart Inhibit Test BE1 11m...
Page 440: ...74 4 9424200996 Virtual Control Switches 43 Test BE1 11m...
Page 450: ...75 10 9424200996 Logic Timers 62 Test BE1 11m...
Page 464: ...79 8 9424200996 Troubleshooting BE1 11m...
Page 480: ...80 16 9424200996 Specifications BE1 11m...
Page 600: ...84 56 9424200996 Settings Calculation Examples BE1 11m Figure 84 70 Logic Page 4 Part 1...
Page 602: ...84 58 9424200996 Settings Calculation Examples BE1 11m...
Page 608: ...85 6 9424200996 BESTCOMSPlus Settings Loader Tool BE1 11m...
Page 609: ......