Advanced Power technologies TTC-1000 - 13 DOWNLOAD PROGRAM UPDATES

V6.230 20131017
132
After selecting the data point
s to log, it is simple to figure out the length of time
data can be recorded. For example if 30 minutes time stamping is required, Time
Base=1800, and P1, P2, Winding & Load are required (3 temps & 1 load), the
maximum time that data can be recorded in day
s is equal to 9,289 divided by 48
records per day or 193 days. This can be extended to up to 2,508 days if only
one temperature is recorded every 9999 seconds or ~2.75 hours. Practically
speaking, a temperature and load will be logged every hour or 3600 se
conds. In
this case the log will hold 540 days of data.
There is one limitation, in the event that power is interrupted, the time stamp is
stored as a data record. Time stamp records consume a total of 8 bytes. This is a
non
-
factor if power is never interr
upted, but if the device is AC powered, it could
reduce the number of records by a small amount.
12.2
Data Points
Data recorded can be selected for logging. For P1, P2, or P3, the data recorded
takes the name chosen for the specific temperature probe. If P1 or
P2 or P3 is
chosen as LTCDIFF, the data recorded is the differential between the LTC tank
temperature and the Top Oil probe. All other temperature points are recorded as
the absolute value of the measured temperature.
The load current reported is the avera
ge or demand logged for the period
between samples. If a Time Base of 15 minutes is selected, the load current is
the average value over 15 minutes. For Time Base settings less than 16
seconds, the load current reported will be the actual load current.
Tap
position can also be data logged.
12.3
Setting the Time Base
Time Base can be entered from 0 to 9999 seconds. Setting the Time Base to
zero will reset the log and no records will be logged. Changing the Time Base will
erase the log and commence recording with
the new Time Base.
To change this setting, enter PROGRAM mode from the front panel as discussed
in Section
4.1
. To set the time base from the front panel,
enter the Configuration
menu and
press the

or

arrow button until the setting
071
is displayed:
Pr
ess the
YES
button. The first digit will flash. Use the

or

arrow buttons to
scroll through the digits 0
–
9. Use the

or

buttons to scroll between the
digits.
The currently active digit will flash
. Press
YES
after you have entered all
four digits.
PRGM SETTING 071
TIMEBA
SE=0000sec