Yokogawa DR240 - Manual (Page 235)

14-8 IM DR231-01E
14.1 Specifications of DR130/DR231/DR241 (Style S3)
Recording interval for digital printout and chart speed
When the recording interval is SINGLE
however, chart speed (mm/hour)
× trend recording interval must not exceed 3000.
12
4
2
1
10 to 24mm/h
25 to 49mm/h
50 to 99mm/h
100 to 1500mm/h
Chart speed
Number of digital print rows*
1 row
6
2
1
1
2 row
4
2
1
1
3 row
3
1
1
1
4 row
Unit : hour
* Three- and four-row digital printing is available only with the DR231/241.
When the recording interval is MULTIPLE
Set by timer.
Other functions
Manual printout: One scan's worth of data can be digitally printed by a key operation or event/
action function.
Zone recording: Recording width and recording positions (0% and 100% positions) can be set in
mm units for each channel in case of trend recording.
Partial compression: A part of the amplitude can be compressed in case of trend recording (only
one boundary).
Display
Display method
VFD (5
× 7 dot matrix, 3 rows)
Number of characters
Main display: 22 large characters (1 row); Sub-display 1 and 2: 40 small characters (2 rows)
Displayed contents
Digital value display: data for freely selected channels can be displayed on each row (1 channel
per line, max. 5 rows); channel No. or tag (up to 7 characters); alarm search; measurement values;
engineering unit
Bargraph display: measurement values of the main display are displayed as a bargraph
Auxiliary data: clock, alarm status, relay status, key-lock ON/OFF, recorder operation
Alarms
Number of settings
Up to four alarms can be set for each channel.
Kind of alarms: selection from higher limit, lower limit, difference higher limit, difference lower
limit, higher limit on rate of change, lower limit on rate of change. However, only upper limit and
lower limit alrams are output for totalized results.
Rate of change alarm time interval: Can be set to measurement interval
× 1 to 15 (common to
both rising and falling limits).
Output mode
Energize/de-energize selection, AND/OR mode selection, and output hold/non-hold selection can
be made (common to all channels).
A maximum number of 6 reflash alarm output points can be specified.
Number of alarm output points
Max. 12 (when equipped with both /A4 and /R1 options).
Alarm recording
Analog trend mode: The alarm occurrence/release mark, channel number or tag, kind of
alarm and alarm item No. are printed in the right margin.
Logging mode:
The kind of alarm is printed when the measured data are recorded.
Alarm display
Alarm status indication: Lights or flashes when an alarm is detected;
Alarm acknowledge indication: Indicator stops flashing by key operation.