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6.3.4
Fault Data Records
Up to ten fault records can be stored and displayed on the Fascia LCD. Fault records can be triggered by user
selected relay operations or via a suitably programmed binary input. An output is provided to indicate when a
new record has been stored.
Fault records provide a summary of the relay status at the time of trip, i.e. the element that issued the trip, any
elements that were picked up, the fault type, LED indications, date and time. The Max Fault Rec. Time setting
sets the time period from fault trigger during which the operation of any LEDs is recorded.
The relay can be set to automatically display the fault record on the LCD when a fault occurs by enabling the
SYSTEM CONFIG> Trip Alert setting. When the trip alert is enabled the fault record will be displayed until the
fault is removed.
With the Trip Alert setting enabled the user will have to press the TEST/RESET
return to the home screen after a trip has occurred. The user will then have to press the TEST/RESET
further time (four in total) to reset the relay.
1.
After a trip occurs the Trip Alert displays the time and date of the trip. The user then presses the
TEST/RESET
2.
The fault type is then displayed with the date the fault occurred. The fascia prompts the user to press the
TEST/RESET
3.
The information regarding the fault is then displayed. The user then presses the TEST/RESET
to return to the home screen.
4.
Pressing the TEST/RESET
With the Trip Alert setting disabled the user only has to press the trip reset button once to reset the relay.
When examined together the event records and the fault records will detail the full sequence of events leading to
a trip.
Fault records are stored in a rolling buffer, with the oldest faults overwritten. The fault storage can be cleared with
the DATA STORAGE/Fault Storage>Clear Faults setting or from Reydisp.
6.3.5
Disk Activity Warning
The Data Storage facilities offered by the Relay involve archiving a huge amount of data to non-volatile memory.
Since such functionality is always secondary to the Protection functionality offered by the Relay, this means that
data transfers can take significant amounts of time; perhaps several minutes. If the Relay is power-cycled during
a storage cycle, some of the data will be lost. For this reason, the Relay can provide a visual warning (at the top-
right position of the LCD) that data storage is taking place:
The 'œ' disk symbol shows that the copying of Events, Waveform Records or Fault Records, to non volatile
disk storage, is currently in progress.
Whether this symbol is displayed or not is set by the SYS CONFIG > Disk Activity Symbol setting.
To avoid such data archiving causing a sluggish response of the HMI during Testing or Commissioning – when a
considerable number of new Data records are likely to be created – it is possible to temporarily suspend it. The
duration of this block is set by the SYS CONFIG > Archiver Blocking Time setting. Once this Time has elapsed,
the block is removed and all stored data will be archived as usual.
The 'A' symbol at the top-right position of the LCD indicates that new Events, Waveform Records or Fault
Records are currently being held in volatile RAM and the archiving, to non-volatile flash disk storage, is being
temporarily blocked.
©2014 Siemens Protection Devices Limited
button.
button to view the details of this fault.
button one further time will reset the relay.
Chapter 1) 7SR158 Description of Operation
button three times in order to
Chapter 1) Page 35 of 38
button a
button
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