Basler Electric BE1-851 - Manual (Page 112)

next processing loop with the currently calculated demand value. No write access is needed to reset
demand register values at the HMI. It is also possible to preset a value into the Peak Since Demand
registers. Pressing the Edit key can do this. Write access to the Reports functional area is required to
preset values at the HMI.
Values and time stamps in the demand registers can also be read through the communication ports by
using the RD (report demands) command.
Demand information specific to current, can be obtained by including an object name with the command
function (R) and subgroup (D). Today’s Peak, Yesterday’s Peak, and Peak Since Reset information for
current is available using the RD-TI, RD-YI, and RD-PI commands.
Breaker Monitoring
Breaker monitoring helps manage equipment inspection and maintenance expenses by providing
extensive monitoring and alarms for the circuit breaker. Breaker monitoring functions include breaker
status and operations counter reporting, fault current interruption duty monitoring and trip-speed
monitoring. Each function can be set up as a programmable alarm. The Alarms Function subsection has
more information about the use of programmable alarms. The breaker trip circuit voltage and continuity
monitor is a related function and is described in the Trip Circuit Monitor subsection.
Breaker Status Reporting
The breaker status monitoring function monitors the position of the breaker for reporting purposes.
Opening breaker strokes are also counted and recorded in the breaker operations counter register. Circuit
breaker status is also used by the breaker trip circuit voltage and continuity monitor. The Trip Circuit
Monitor subsection provides more details.
Programming the Breaker Status Reporting Function
Since the relay is completely programmable, it is necessary to program which logic variable will monitor
breaker status. Breaker status is programmed in BESTCOMS using the BESTlogic Function Element
screen. Figure 6-4 illustrates this screen. To open the BESTlogic Function Element screen for Breaker
Status, select Reporting and Alarms from the Screens pull-down menu. Then select the Logic button in
the lower left hand corner of the screen and inside the box labeled, Breaker Status Logic. Alternately,
settings may be made using the SB-LOGIC ASCII command.
To connect the Breaker Status BLOCK input, select the BLOCK button. The BESTlogic Expression
Builder screen will open. Select the expression type to be used. Then, select the BESTlogic variable or
series of variables to be connected to the input. Select Save when finished to return to the BESTlogic
Function Element screen. For more details on the BESTlogic Expression Builder, see Section 7,
BESTlogic Programmable Logic. Select Done when the settings have been completely edited.
Example 1.
Make the following logic settings to the Breaker Status, CONTROL logic input. Figure 6-4
illustrates these settings.
CONTROL: /IN3
NOTE
When the NOT symbol (/) is used, the symbol is applied to the variable
immediately following the symbol.
6-10 BE1-851 Reporting and Alarms 9289900990 Rev R