Interval Log-- The <Interval Log> Menu - Siemens MJ-5 Installation And Operation Manual

5
Reading and Interpreting MJ-5 Control Panel Data
To access log data, view the <EVENT LOG> menu with
the Menu Selection keys; then use the ▲ and ▼ keys to
sequence through the log entries.
New Events that occur while Events are displayed are
saved, but not made available for viewing until you return
to the menu level and subsequently scroll into the
<EVENT LOG> menu again. Meter data for all of the
Events can be retrieved via the display screen on the front
panel. Data for the 200 most recent Events is stored and can
also be retrieved via the front-panel Data Port or the
Communication Port.
5.5.1 Viewing Event Data
To quickly go from viewing one Event to viewing the
previous or next Event, use the ◄ or ► keys. For example,
if the screen being viewed is [Event: 20], press the ◄ key
once to view the [Event: 19] screen. From the [Event: 19]
screen, press the ► key once to view the [Event: 20] screen
again.
5.5.2 Clearing Individual Events from the Event
Log
Since you can now view all of the <EVENT LOG> data
from the front panel, or download it via the data port, it is
unnecessary to delete individual <EVENT LOG> items.
The MJ-5 no longer supports deleting individual log
records. If the <EVENT LOG> memory is full, the oldest
record is overwritten when a new event occurs.
5.6 Interval Log — The <INTERVAL
LOG> menu
The MJ-5 Control Panel can be set up to record data at the
completion of a predefined interval of time. Use the <LOG
SETUP> menu to define the time interval and to activate
Interval logging (see Section 4.5).
Interval logging occurs when "seconds" is zero on the
internal clock. For certain interval period selections,
interval logging is tied to the time-of-day. For 15 and 30
minute interval settings, the MJ-5 logs data at even quarter
and half-hour increments, respectively. For a one-hour
setting, the MJ-5 logs data on the hour. For four and six-
hour settings, the MJ-5 logs data synchronized to 12:00:00
midnight.
Siemens Industry, Inc.
Table 5.6 describes the data that is logged at the conclusion
of each interval.
Table 5.6 Interval Log Data Items
1. The Interval number is a sequential number used for
maintaining and referencing the interval log.
2. Secondary only — even if PRI selected in Meter Volts data
item.
If the specified interval elapses while you are viewing
<INTERVAL LOG> data, the MJ-5 saves the new data,
but it is not available for viewing until you return to the
menu level and subsequently scroll into the <INTERVAL
LOG> menu again. Data for all of the Intervals can be
viewed from the <INTERVAL LOG> menu. Data for the
1000 most recent Intervals is stored and can also be
retrieved through the front-panel Data Port or the
Communication Port.
5.6.1 Viewing Interval Data
Interval Data Items may be selected from the Interval Log
menu using the Change/Save key. Scroll through data items
using the ◄ and ► or ▲ and ▼ keys. To exit entries,
simply press the Menu key.
5.6.2 Clearing Individual Intervals from the
Interval Log
Since you can now view all of the <INTERVAL LOG>
data from the front panel, or download it via the data port,
it is unnecessary to delete individual <INTERVAL LOG>
items. The MJ-5 no longer supports deleting individual log
records. If the <INTERVAL LOG> memory is full, the
oldest record is overwritten when a new interval log occurs.
5.6.3 Resetting Min/Max Values at Each
Interval
In <LOG SETUP>, set ResLogMinMax to ON to reset
min/max values at the start of each interval. With this
feature enabled, MJ-5 logs the min/max values that occur
during each interval.
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