BE1-951
Reporting and Alarm Functions
6-17
Breaker operate time can be monitored to give an alarm when the value exceeds a threshold. The following
Breaker Alarms subsection provides more information about this feature.
Breaker Alarms
Three alarm points are included in the programmable alarms for checking breaker monitoring functions.
Each alarm point can be programmed to monitor any of the three breaker monitoring functions: operations
counter, interruption duty, or operate time. An alarm threshold can be programmed to monitor each function.
Alternately, three different thresholds can be programmed to monitor one of the monitored functions. Breaker
alarms are programmed using the SA-BKR command. Command specifications are summarized in Table
6-9.
Table 6-9. SA-BKR Command Settings
Setting
Range/Purpose
Default
Mode
0 = disabled
2 = number of operations
1 = percent duty
3 = breaker operate time
0
Alarm
Limit
mode 1
0 to 100 in percent, increment = 0.01
0
mode 2
0 to 99999 in operations, increment = 1
0
mode 3
0, 20 to 1000 in milliseconds or 2 to 60 in cycles
Alarm limit may be entered in milliseconds (m), seconds (s), or cycles
(c). Setting is reported in milliseconds if less than 1 second.
0
SA-BKR Command
Purpose:
Read or set breaker alarm settings.
Syntax:
SA-BKR<x>[=<mode>,<alarm limit>]
Comments: x = 1 (alarm point 1), 2 (alarm point 2), or 3 (alarm point 3). See Table 6-9 for SA-BAR settings
information.
SA-BKR Command Example
1.
Program breaker alarm point number 1 at 20 operations, point 2 at 50 percent duty, and point 3 for slow
breaker alarm for clearing times greater than 8 cycles.
>SA-BKR1=2,20
>SA-BKR2=1,50
>SA-BKR3=3,8c
Optional Load Profile Recording
Load profile recording is an optional selection when the BE1-951 is ordered. This option ( 4000 Point Load
Profile Demand Log or Y as the third character from the right in the style chart) uses a 4,000 point data array
for data storage. Refer to Section 1,
General Information, Model And Style Number Description, for more
information on optional selections. At the specified (programmed) interval, Load Profile takes the data from
the demand calculation register and places it in a data array. If the programmed interval is set to 15 minutes,
it will take 41 days and 16 hours to generate 4,000 entries. Load profile data is smoothed by the demand
calculation function. If you made a step change in primary current, with the demand interval set for fifteen
minutes, and the load profile recording interval set for one minute, it would take approximately fifteen
minutes for the load (step change) to reach 90 percent of the final level. See the previous paragraphs in this
Section on Demand Reporting for information on calculation methods.
Setting The Load Profile Recording Function
For the load profile recording function to log data you must set the demand logging interval. This can be
done from the ASCII command interface using the SG-LOG (setting general, logging interval). Table 6-10
lists the settings for the optional load profile recording.
