6-22
Reporting and Alarm Functions
BE1-951
D2850-10.vsd
06-25-99
R G - T A R G = 0
Logic
Target
R e s e t
Logic
T R S T K E Y
H M I R E S E T K E Y
Figure 6-4. Target Reset Logic
Protective Function
Name
Default
General purpose logic timer
62
Off
2
nd
General purpose logic timer
162
Off
Underfrequency/Overfrequency
81
Enabled
2
nd
Underfrequency/Overfrequency
181
Enabled
3
rd
Underfrequency/Overfrequency
281
Enabled
4
th
Underfrequency/Overfrequency
381
Enabled
3
rd
Underfrequency/Overfrequency
481
Enabled
4
th
Underfrequency/Overfrequency
581
Enabled
Fuse loss detection
60FL
Enabled
Breaker failure
BF
Enabled
Volts per hertz
24
Enabled
Setting the Targets Function
Using the SG-TARG command, you can select which protective elements trigger a target and what type of
logic condition will reset the targets. Target settings are summarized in Table 6-13.
Table 6-13. Target Settings
Function
Purpose
x
Protective elements that will trigger a target. Multiple
elements can be specified by separating each element by /.
When the programmed protective element’s BESTlogic
expression is TRUE (1) and the trip output is TRUE (1), a
trip event is recorded in the target log.
rst TARG logic
Logic expression that when TRUE (1), will reset the targets.
SG-TARG Command
Purpose:
Read or set which protective elements log targets to the fault reporting function.
Syntax:
SG-TARG[=<x/x/..x>,<rst TARG logic>]
SG-TARG Command Example
1.
Set the relay to log targets for 50T and 150T instantaneous overcurrent functions, the breaker failure
function, and the 27P undervoltage function.
>SG-TARG=50T/150T/BF/27P
Retrieving Target Information
Targets can be viewed at HMI screen 1.2 and through the
communication ports using the RG-TARG (report general,
targets) command. The relay provides target information from
the most recent trip event. Target information is specific to an
event; it is not cumulative. Targets for previous events are
recorded in the fault summary reports which are described in
the following subsection.
When a protective trip occurs and targets are logged, the HMI
Trip LED seals-in and screen 1.2 is automatically displayed.
