ABB REG316 4 Series Operating Instructions Manual page 381

REG 316*4 1MRB520049-Uen / Rev. F ABB Switzerland Ltd
The post-event circumstances are of less importance, especially
in recording mode B, in which case simply the duration of re-
cording is extended. The essential thing is that during post-event
recording, a new trigger signal can initiate the recording of new
events. This, however, means that two events overlap and it may
not always be possible to fully reconstruct the circumstances of
both events (part of the pre-event data is in the preceding event).
The entire event memory operates as a ring register. This means
that a single event can be deleted to make room for a new one
without having to delete the others.
The procedure followed when the memory is full can be se-
lected. Either recording is discontinued and no new events are
recorded, or the oldest records are overwritten so that the mem-
ory always contains the latest events. It must be noted that in
this mode, a record can be deleted before it has been trans-
ferred to an operator station. Even if transfer of a record is in
progress, it will be interrupted to make room for a new record.
Application programs
Disturbance recorder data (currents, voltages and measured
variables) can be transferred back to the RE. 316*4 device using
the conversion program INTERFAC (in conjunction with the test
set XS92b) (see INTERFAC Operating Instructions CH-ES 86-
11.53 E).
Refer to Section 9.3. for the procedure for transferring distur-
bance data via the IBB.
Disturbance recorder data files are stored in a binary format and
can only be evaluated using the WinEVE program (see WinEVE
Operating Instructions *BHT 450 045 D0000) or the REVAL
program (see REVAL Operating Instructions 1MDU10024-EN).
Measured function variables may have values which cannot be
entirely reproduced by the evaluation software. Such variables
can be reduced using the scaling factors 'MeasScale'. The high-
est number the evaluation software can reproduce faithfully is
± 16535. The evaluation software automatically takes account of
the scaling factors.
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