A logic input can be used to reset the target. Using BESTCOMS, select
Reporting and Alarms
from the
Screens
pull-down menu. Then select
Fault Recording
tab. The logic input can be connected by selecting
the
Logic
button in the
Target Reset
pane. When the logic input becomes TRUE, the target is reset.
BESTCOMS can also be used to review targets and alarms after an operation by selecting
Metering
from
the
Reports
pull-down menu. Using the
View
pull-down menu, select
Alarms Status
and
Targets Status.
These panes (Figure 6-20) will contain target and alarm information.
Figure 6-20. Targets and Alarms Status, BESTCOMS Metering Screen
Table 6-17 provides the possible targets that may be displayed on the
Metering
screen.
Table 6-17. Targets as Displayed
IEEE Device Number
Definition
24 Overexcitation
27/127 ABC
Phase Undervoltage
47
Negative Sequence Overvoltage
50/150/250/350 ABC, N, Q; 450 ABC, N;
550/650/750 ABC
Instantaneous Overcurrents
51/151/251/351 ABC, N, Q; 451 N
Time Overcurrents
50BF/150BF/250BF/350BF Breaker
Failure
59/159 ABC
Phase Overvoltage
59BUS, 59N, 59-3BUS (59X fundamental, 3V0, 3
rd
harmonic)
Auxiliary Overvoltage
60FL Fuse
Loss
62/162/262/362 Logic
Timers
81/181/281/381/481/581 Frequency
87R ABC
Phase Differential Restrained
87U Phase
Differential
Unrestrained
87ND/187ND
Neutral Differential Restrained
The RG-TARG (report general, targets) command can be used to read and reset the targets. Write
access to Reports must be gained to reset the targets using the ASCII command interface.
Fault Summary Reports
The BE1-CDS240 records information about faults and creates fault summary reports. A maximum of 16
fault summary reports are stored in the relay. The two most recent reports are stored in nonvolatile
memory. When a new fault summary report is generated, the relay discards the oldest of the 16 events
and replaces it with a new one. Each fault summary report is assigned a sequential number (from 1 to
255) by the relay. After event number 255 has been assigned, the numbering starts over at 1.
BE1-CDS240 relays generate five different event types. They are BKR FAIL, PICKUP, TRIP, LOGIC, and
RF-TRIG.
BESTCOMS Fault Summary Report
To view fault reports using BESTCOMS, select
Oscillography Download
from the
Reports
pull-down
menu. A screen such as the one shown in Figure 6-21 will appear.
9365200990 Rev F
BE1-CDS240 Reporting and Alarm Functions
6-31
Summary of Contents for BE1-CDS240
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