Basler Electric BE1-700 - Manual (Page 145)

Table 6-7 summarizes the Breaker Duty Monitoring settings.
Table 6-7. Breaker Duty Monitoring Settings
Function Range/Purpose Default
Mode
0 = Disabled
1 = breaker monitoring enabled with duty calculated as
ΣI
2 = breaker monitoring enabled with duty calculated as
ΣI 2
The exponent may be set between 1 and 3.
0
100% Duty
Maximum
0 to 4.2e+7
The 100% Duty Maximum parameter represents the maximum duty that
the breaker contacts can withstand before needing service. 100% Duty
Maximum is programmed in primary amperes using exponential floating
point format.
0
Block
OR logic term (e.g., IN1 or VO7) that blocks the breaker monitoring logic
when TRUE (1). A setting of 0 disables blocking (breaker operations are
no longer counted).
0
Retrieving Breaker Duty Information
Breaker duty values can be read at HMI Screen 4.3.2. Duty values can be changed by using the front
panel Edit key. Write access to reports is required to edit breaker duty values. Duty values can also be
read or changed through the communication ports using the RB-DUTY command.
Breaker Operate Time Monitoring
The breaker operate time monitor tracks the time from when a trip output occurs (defined by the TRIP
logic expression) to when the fast dropout current detector observes that current is zero in all three
breaker poles. This time is reported as a line in the Fault Summary Reports. See the Fault Reporting sub-
section for more information about the TRIP logic expression and Fault Summary Reports.
Breaker operate time can be monitored to give an alarm when the value exceeds a threshold. The
following Breaker Alarms sub-section provides more information about this feature.
Breaker Alarms (BE1-700C)
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 clearing 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 settings are made using BESTCOMS. Figure 6-7 illustrates the BESTCOMS screen used
to select settings for the Breaker Alarms function. Alternately, settings may be made using the SB-BKR
ASCII command.
At the top of the screen is a pull-down menu labeled Logic. This menu allows viewing of the BESTlogic
settings for each preprogrammed logic scheme. A custom logic scheme must be selected on this menu in
order to allow changes to be made to the mode and inputs of the function.
Using the pull-down menus and buttons, make the application appropriate settings to the Breaker Alarms
function.
Table 6-8 summarizes the Breaker Alarms settings.
9376700990 Rev M BE1-700 Reporting and Alarm Functions 6-13