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Function:
1 Application
The indications from all the 48 selected binary signals are shown on the
built-in man-machine interface (MMI) and on the Station Monitoring Sys-
tem (SMS) for each recorded disturbance in the disturbance report. The
LEDs on the front of the terminal display start and trip indications.
2 Theory of operation
The indications shown on the MMI and SMS give an overview of the sta-
tus of the 48 event signals during the fault. On the MMI, the indications
for each recorded disturbance are presented at:
DisturbReport
Disturbances
Disturbance n (1 - 10)
Indications
All signals selected can be internally produced signals or emerge from
binary-input channels. Note that the trip signals (TRIP-TRIPL1, TRIP-
TRIPL2, TRIP-TRIPL3) and BFP--BUTRIP (from the breaker failure
protection function) are not automatically available, neither on the built-
in MMI, nor in SMS. But when any of these four trip signals are indicated,
the red MMI LED is automatically activated.
The indications are registered only during the fault time of a recorded dis-
turbance, as long as any trigger condition is activated. A part or all of
these indications can be automatically scrolled on the built-in MMI after a
disturbance is recorded, until acknowledged with the C button on the
MMI. They are selected with the Indication mask.
The signal name for internal logical signals presented on the screen fol-
lows the signal name, which can be found in the signal list in each func-
tion description of this user’s guide. Binary input signals are displayed
with their user-defined names.
The LED indications display this information:
Green LED :
• Steady light In service
• Flashing light Internal fail, the INT--FAIL internal signal is high
• Dark No power supply
Yellow LED :
• Steady light A disturbance report is triggered
• Flashing light The terminal is in test mode or in configuration mode
Red LED :
• Steady light A protection function issued a trip command for one
of the four trip signals previously listed
• Flashing light The terminal is blocked, that is the internal signal
TEST-TERMBLCK is high
7
Indications
1MRK 580 136-XEN
Version 1.0-00
October 1996
Basic
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