Application; Theory Of Operation - ABB REC 561 User Manual

ABB Network Partner AB
Version 1.0-00
October 1996
Function:

1 Application

2 Theory of operation

Indications
Basic
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.
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
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
• Flashing light Internal fail, the INT--FAIL internal signal is high
• Dark
Yellow LED :
• Steady light
• Flashing light The terminal is in test mode or in configuration mode
Red LED :
• Steady light
• Flashing light The terminal is blocked, that is the internal signal
Disturbance n (1 - 10)
Indications
In service
No power supply
A disturbance report is triggered
A protection function issued a trip command for one
of the four trip signals previously listed
TEST-TERMBLCK is high
1MRK 580 136-XEN
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