User Manual
9
Programming and Running a Sequence
Logging Column Data
Data logging allows the user to view column information collected by the FTC. Turn on
data logging, type L+<enter>. To stop logging data, type L-<enter>.
The data is presented as follows:
Total Time (sec) Target Temp Measured Temp Tt-Tm Voltage Current PWM State Flag
00000001.0 40.00 40.000 0.000 0.6110 0.1038 983 1R
00000002.0 40.00 40.000 0.000 0.6110 0.1038 983 1R
00000003.0 40.00 40.000 0.000 0.6110 0.1038 983 1R
00000004.0 40.00 40.000 0.000 0.6110 0.1038 983 1R
00000005.0 40.00 40.000 0.000 0.6110 0.1038 983 1R
00000006.0 40.00 40.000 0.000 0.6110 0.1038 983 1R
The first digit of the last value denotes the number of the active state. The second digit
conveys the following meaning:
Flag Meaning
A Ramp auto correction on
D PWM duty cycle limit reached
F Fan is on
I Column current limit reached
H Holding in state
P Column power limit reached
R Ready
V Column voltage limit reached
X External start command received
Turning the Column On
Power to the column must be turned on before the programmed states will execute. To
do this:
1. Type Z+<enter>. The following message will appear:
WARNING:Operatingwithincorrectparametersmaydamagecolumn!
Columntemperaturereading:19.7.
Is this correct (N)?
2. Ifthetemperatureisappropriateforitsenvironment,typeY<enter> and the FTC will
power up the column. If the column temperature reading is inaccurate, the column
may be damaged. Type N<enter> and the column will not receive power.
Incorrect column data can contribute to permanent damage
to the column. If you get a suspicious reading, please contact
Valco for further assistance.
Typing Z-<enter> will turn the column off.