10-36
Serial Port Communications and Commands
Date Code 990215
SEL-351P Manual Técnico
The battery charger board status does not affect the status of the recloser control. The battery
charger board is disabled if its microprocessor is no longer responding or if a battery discharge
test fails. Please refer to
Section 8: Breaker/Recloser Monitor, Battery System Monitor,
Metering, and Load Profile Functions
.
TAR Command (Display Relay Word Bit Status)
The TAR command displays the status of front-panel target LEDs or recloser control elements,
whether they are asserted or deasserted. The elements are represented as Relay Word bits and
are listed in rows of eight, called Relay Word rows. Refer to Table SECTION 10: .6. (note the
correspondence with Table 9.3).
A Relay Word bit is either at a logical 1 (asserted) or a logical 0 (deasserted). Relay Word bits
are used in SEL
OGIC
Control Equations. See
Section 9: Setting the SEL-351P Recloser
Control
and
Appendix G: Setting SEL
OGIC
®
Control Equations
.
The TAR command does not remap the front-panel target LEDs, as is done in some previous
SEL relays. But the execution of the equivalent TAR command via the front-panel display does
remap the bottom row of the front-panel target LEDs (see OTHER pushbutton in the
Pushbutton
Primary Functions
subsection in the
Front-Panel Interface
section of the
SEL-351P Quick-
Start Installation and User’s Guide
).
The TAR command options are:
TAR n k
Shows Relay Word row number
n
(0 - 44).
k
is an
optional parameter to specify the number of times (1 -
32767) to repeat the Relay Word row display. If
k
is not
specified, the Relay Word row is displayed once.
TAR name k
Shows Relay Word row containing Relay Word bit
name
(e.g., TAR 50C displays Relay Word Row 5 containing
the Relay Word bit 50C). Valid names are shown in
Table SECTION 10: .6.
k
is an optional parameter to
specify the number of times (1 - 32767) to repeat the
Relay Word row display. If
k
is not specified, the Relay
Word row is displayed once.
TAR R
Clears front-panel tripping target LEDs TRIP, FAST
CURVE, HIGH CURRENT, 81, A, B, C, G, and SEF.
Unlatches the trip logic for testing purposes (see
Figure 5.1). Shows Relay Word Row 0.
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