Woodward highprotec MRI4, User Manual

Page: 181 / 727

Recorders
Event Recorder
Event rec
The event recorder can register up to 300 events and the last (minimum) 50 saved events are recorded fail-safe.
The following information is provided for any of the events:
Events are logged as follows:
Record No. Fault No. No of grid faults Date of Record Module.Name State
Sequential
Number Number of the
ongoing fault
This counter will
be incremented
by each General
Alarm
(Prot.Alarm)
A grid fault No. can
have several Fault
No.
This counter will be
incremented by each
General Alarm
(Exception AR: this
applies only to
devices that offer
auto reclosing)
Time stamp What has
changed? Changed Value
There are three different classes of events:
Alternation of binary states are shown as:
0->1 if the signal changes physically from »
0«
to »
1«
.
1->0 if the signal changes physically from »
1«
to »
0«
.
Counters increment is shown as:
Old Counter state -> New Counter state (e.g. 3->4)
Alternation of multiple states are shown as:
Old state -> New state (e.g. 0->2)
181 MRI4 DOK-HB-MRI4-2E