West Control Solutions Pro-EC44 - Manual (Page 104)

Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-1 October 2013 Page 97
18 Data Recorder
The optional Data Recorder allows the recording of process conditions to memory over time.
It operates independently from the Trend Views. The recorder includes 1Mb of flash memory
to store data when powered down and a real time clock (RTC) with a battery backup.
CAUTION: Servicing of the Data Recorder/RTC circuit and replacement of
the internal lithium battery should be carried out by only a trained
technician.
Recordable Values
A selection of values can be recorded for each control loop, from: Process Variable;
Maximum or Minimum Process Values (since the previous sample); Setpoints; Primary
Power, Secondary Power or Auxiliary Input values. Additionally the status of Alarms and
Profiler Events can be recorded, as can when the unit is turned On/Off. See the Recorder
Configuration sub-menu on page 58.
Sampling rates between 1 second and 30 minutes are possible, with the data either recorded
until all
memory is used, or with a continuous “First In/First Out” buffer overwriting the oldest
data when full.
The recording capacity is dependent on sample rate and number of values recorded. For
example: Two analogue values will recorded for 21 days at 30s intervals. More values or
faster sample rates reduce the duration proportionally.
Note: If Alarm or Events are selected, their change of state is recorded using
extra memory. If the alarm status is likely to change often, take this into account
when determining if there is sufficient memory available.
Recorder Control and Status
Options for starting/stopping recordings include Manually (from the recorder menu or a
screen added to operation mode); a Digital Input; during a Running Profile; or Record on
Alarm. See the Recorder Configuration sub-menu on page 58.
The recorder control menu (page 62) allows the manual trigger to be started or stopped, as
well as deleting recorded data from memory.
A status screen is shown with current information about the recorder, including if a recording
is in progress (Recording or Stopped); the recording mode (FIFO or Record Until Memory Is
Used); a % memory use bar-graph and the estimated available time remaining based on the
data selected and memory used.
These icons are
displayed for each
active recording trigger.
Recorder status and
manual record trigger control can optionally be added to Operation Mode. This is enabled or
disabled in the Display Configuration sub-menu on page 59.
Note: The recorder control screens allow the manual trigger to be started or
stopped, but recording will continue as long as any trigger that has been
configured is active.
Manual Record Digital Input Profile Record Alarm Record