Siemens 7SR224 Argus Manual page 7

Data Acquisition -
Via Communication Interface
Sequence of event records
Up to 5000 events are stored and time tagged to 1ms
resolution.
Fault Records
The last 10 fault records are displayed on the relay fascia and
are also available through the communication interface,
with time and date of trip, measured quantities and type of
fault.
Waveform recorder
The waveform recorder stores analogue data for all poles
and the states of protection functions, binary inputs, LEDs
and binary outputs with user settable pre & post trigger
data. A record can be triggered from protection function,
binary input or via data communications. 10 records of 1
second duration are stored.
Demand Monitoring
A rolling record of demand over the last 24h is stored. The
demand is averaged over a user selectable period of time. A
rolling record of such demand averages is stored and
provides the demand history. A typical application is to
record 15min averages for the last 7 days.
Real Time Clock
The time and date can be set and are maintained while the
relay is de-energised by a back up storage capacitor. The
time can be synchronized from a binary input pulse or the
data communication channel.
Data Log
The average values of voltages, current and real & reactive
power are recorded at a user selectable interval and stored
to provide data in the form of a Data Log which can be
downloaded for further analysis. A typical application is to
record 15 minute intervals over the last 7 days.
Siemens Protection Devices Limited
Reydisp Evolution
Fig 2. Typical Reydisp Evolution screenshot
Reydisp Evolution is common to the entire range of Reyrolle
numeric products. It provides the means for the user to apply
settings, interrogate settings and retrieve events and
disturbance waveforms from the relays.
Reydisp Evolution installation includes the Communications
Editor to allow configuration of the serial protocol data points
and options, the Curve Editor to allow programming of user
defined TCC characteristics and the Language Editor to allow
relay display text to be edited. This can be used to provide non-
English language support using the European character set.
7