7-2
IM WT310E-01EN
Number of Blocks Stored
All data values that can be acquired within a single data update interval are stored as one block.
The number of data values vary depending on the number of installed elements, so the number of
blocks that can be stored varies depending on the product. The number of data blocks that can be
stores in the internal memory is shown below.
Model
Normal Measurement Data Only
Normal Measurement Data and Harmonic
Measurement Data*
WT310E or WT310EH
9000 blocks
700 blocks
WT332E
4000 blocks
300 blocks
WT333E
3000 blocks
200 blocks
* When the harmonic data display is set to ON on a model with the harmonic measurement option
Stopping Storage
Storage stops in the following circumstances.
• When data has been stored to all blocks indicated above
• When the storage setting is set to oFF (while storage is in progress)
Note
• Measured data that has been stored cannot be recalled on the screen of this instrument.
• Measured data that has been stored can be transmitted to a PC through the communication feature. You
can view the data on the PC. For details, see the Communication Interface User’s Manual, IM WT310E-
17EN.
Storage Interval
Set the time interval for repeating the storage operation. The default value is00.00.00.
• Range: 00.00.00 (00 h, 00 min, 00 s) to 99.59.59 (99 h, 59 min, 59 s)
When set to 00.00.00, the storage interval is equal to the specified data update interval.
Turning the Storage On and Off
After you set the storage interval, select whether to set the storage feature to ON or OFF. The default
value is oFF.
• on: Storage starts, and the STORE indicator blinks at the pace at which storage is taking place.
• oFF: Storage stops, and the STORE indicator stops blinking.
Note
• When you stop storage and restart it, the data in the memory will be overwritten.
• Stored data will be deleted if you:
• Turn off the power.
• Initialize the settings (section 5.2).
• Load setup parameters (section 7.2).
• If the fundamental frequency is high and harmonic measured data does not exist up to the 50th harmonic,
“no-data” values are stored for the non-existing harmonics.
•
While storage is in progress, you cannot change measurement conditions except for the measurement range.
• If you press the HOLD key to hold the display while storage is in progress, the measurement operation
and the storage interval time counter are held (paused), which causes the storage operation itself to
be held. If integration is in progress, this instrument continues measurement and integration in the
background.
• When the MAX hold feature (see section 4.6) is enabled, the displayed values for U (voltage), I (current),
P (active power), S (apparent power), Q (reactive power), U+pk, U-pk (voltage peak), I+pk, I-pk (current
peak), P+pk, and P-pk (power peak) will be the maximum held values. D/A output and communication
output values will also be the maximum held values. In addition, stored measured data will be the
maximum held values.
• While storage is in progress, do not change the MAX hold feature settings.
•
If the data update interval is set to Auto, measured data cannot be saved.
7.1 Storing Measured Data
