Length Of Recordings - ABB RED615 Technical Manual

1YHT530004D05 D
8.2.1.3
615 series
Technical Manual
of the limit violation condition exceeds the filter time of approximately 50 ms, the
recorder triggers. In case of a low level limit violation, if the measured value falls
below approximately 0.05 during the filter time, the situation is considered to be a
circuit-breaker operation and therefore, the recorder does not trigger. This is useful
especially in undervoltage situations. The filter time of approximately 50 ms is
common to all the analog channel triggers of the disturbance recorder. The value
used for triggering is the calculated peak-to-peak value. Either high or low analog
channel trigger can be disabled by setting the corresponding trigger level parameter
to zero.
Manual triggering
The recorder can be triggered manually via the LHMI or via communication by
setting the Trig recording parameter to TRUE.
Periodic triggering
Periodic triggering means that the recorder automatically makes a recording at
certain time intervals. The user can adjust the interval with the Periodic trig time
parameter. If the value of the parameter is changed, the new setting takes effect
when the next periodic triggering occurs. Setting the parameter to zero disables the
triggering alternative and the setting becomes valid immediately. If a new non-zero
setting needs to be valid immediately, the user should first set the Periodic trig
time parameter to zero and then to the new value. The user can monitor the time
remaining to the next triggering with the Time to trigger monitored data
which counts downwards.

Length of recordings

The user can define the length of a recording with the Record length parameter.
The length is given as the number of fundamental cycles.
According to the memory available and the number of analog channels used, the
disturbance recorder automatically calculates the remaining amount of recordings
that fit into the available recording memory. The user can see this information with
the Rem. amount of rec monitored data. The fixed memory size allocated
for the recorder can fit in two recordings that are ten seconds long. The recordings
contain data from all analog and binary channels of the disturbance recorder, at the
sample rate of 32 samples per fundamental cycle.
The user can view the number of recordings currently in memory with the Number
of recordings monitored data. The currently used memory space can be
viewed with the Rec. memory used monitored data. It is shown as a
percentage value.
The maximum number of recordings is 100.
Section 8
Measurement functions
651