Analogue Signals; Binary Signals - ABB REC 561 User Manual

ABB Network Partner AB
Version 1.0-00

3 Analogue signals

4 Binary signals

Disturbance report - Introduction
Up to 10 analogue signals (five voltages and five currents from the trans-
former module) can be selected for recording and trig if the Disturbance
Recorder function is installed. If fewer than 10 signals are selected, the
maximum storing capacity in the flash memories, regarding total record-
ing time are increased.
A user-defined name for each of the signals can be programmed in the ter-
minal.
For each of the 10 analogue signals, Operation = On means that it is
recorded by the Disturbance recorder. The triggering itself is independent
of the setting of Operation, and triggers even if operation is set to Off.
Both undervoltage and overvoltage can be used as trig condition. The
same applies for the current signals.
The check of the trig condition is based on peak-to-peak values. When
this is found, the absolute average value of these two peak values is calcu-
lated. If the average value is above the threshold level for an overvoltage
or overcurrent trig, this trig is indicated with a greater than (>) sign with
the user-defined name.
If the average value is below the set threshold level for an undervoltage or
undercurrent trig, this trig is indicated with a less than (<) sign with its
name. The procedure is separately performed for each channel.
This method of checking the analogue start conditions gives a function
which is insensitive to dc offset in the signal. The operating time for this
start is typically in the range of one cycle, 20 ms for a 50 Hz network.
The analogue signals are presented only in the disturbance recording, but
they affect the entire Disturbance Report when being used for triggering.
Up to 48 binary signals can be selected from the signal list, where all
available signals are grouped under each function. The 48 signals can be
selected from among internal-logical signals and binary-input signals. For
each of the 48 signals, it is also possible to selected if the signal is to be
used as a trigger of the Disturbance Report, and if the trig should be acti-
vated on a 1 or a 0.
A user-defined name for each of the signals can be programmed in the ter-
minal.
The selected 48 signals are presented in the event list and the disturbance
recording. But they affect the whole Disturbance Report when they are
used for triggering.
The indications that are to be automatically scrolled on the MMI when a
disturbance has been recorded are also selected from these 48 signals with
the MMI Indication Mask.
1MRK 580 132-XEN
Page 7 - 55