6-12
Reporting and Alarm Functions
BE1-951
Setting the Breaker Status Reporting Function
Since the relay is completely programmable, it’s necessary to program which logic variable monitors breaker
status. This is done with the SB-LOGIC (setting breaker, logic) command. Note that even though a BESTlogic
expression is used to make this setting, this setting isn’t included in the section on BESTlogic settings. The
SB-LOGIC command is included here because it is related to breaker monitoring. Section 7,
BESTlogic
Programmable Logic has more information about programming the relay with BEST LOGIC.
Table 6-6. Breaker Status Reporting Settings
Setting
Range/Purpose
Default
Breaker Closed Logic
OR logic expression that is TRUE when the breaker is
closed (e.g., 52a logic).
/IN1
SB-LOGIC Command
Purpose:
Read or set breaker status logic.
Syntax:
SB-LOGIC[=<Breaker Closed Logic>]
Comments: breaker close logic = BESTlogic term that is TRUE when the breaker is closed (i.e., 52a logic)
See Table 6-6 for SB-LOGIC settings information.
SB-LOGIC Command Example
1.
Set the relay to monitor input 3 so that when the breaker is closed, the input is FALSE. (The 52b contact
is wired to IN3.)
>SB-LOGIC=/IN3
Retrieving Breaker Status and Operation Counter Information
Current breaker status can be read from HMI screen 1.5.6 and through the communication ports using the
RG-STAT command. The General Status Reporting subsection provides more information about this
command.
The number of breaker operations can be read at HMI screen 4.3.1. The counter value can be adjusted
using the Edit key. This allows the relay counter value to be matched to an existing mechanical cyclometer
on a breaker mechanism. Write access to the reports functions must be gained to edit this value at the HMI.
Breaker operations can be read or set through the communication ports using the RB-OPCNTR (report
breaker, operations counter) command.
RB-OPCNTR Command
Purpose:
Read or set breaker operations counter.
Syntax:
RB-OPCNTR[=<#operations>]
Comments: #operations = number of breaker operations recorded (0-99999)
If the counter exceeds 99999, the counter will wrap back to 0.
RB-OPCNTR Command Examples
1.
Read the number of breaker operations.
>RB-OPCNTR
14
2.
Synchronize the relay breaker operations counter with an external counter reading of 65 operations.
>RB-OPCNTR=65
NOTE
When the NOT symbol (/) is used, the symbol is applied to
the variable immediately following the symbol.
