keep the actual current slightly below the max. It can be adjusted in
the settings menu.
Max_Hot:
This is the maximum software command determined from a
power-on test of the controller’s hardware that is expected to keep the
current below maximum when the safety temperature is toward the
high end of its range. It will always be a lower value than the “Max_
Norm” command, since the heater current increases as it gets hotter at
a given software command value.
Max_Norm:
This is the maximum software command determined
from a power-on test of the controller’s hardware that is expected
to keep the current below maximum when the safety temperature
is toward the low end of its range. It will always be higher than the
“Max_Hot” value and less than or equal to 1.0.
Ch1_Max_(A):
This is the actual current measured through the
controller’s current sense resistor on the first channel during the brief
power-on test that measures heater channel sensitivity. It will be lower
than the maximum current because it is measured when the heater
transistors are cool and at their lowest sensitivity.
Ch2_Max_(A):
This is the actual current measured through the
controller’s current sense resistor on the second channel during the
brief power-on test that measures heater channel sensitivity. It will
be lower than the maximum current because it is measured when the
heater transistors are cool and at their lowest sensitivity.
5. The controller constantly outputs seven columns of space-delimited
data over the serial USB port in the following format, every ½ second
(500 msec). The space-delimited format makes it easy to copy and
paste the data into spreadsheet software for subsequent analysis:
Control Safety Setpoint Heater I1 I2 Runaway
21.2 24.9 32.0 0.55 0.63 0.59 0
22.8 25.0 32.0 0.54 0.63 0.59 0
23.7 25.1 32.0 0.53 0.61 0.57 0
24.2 25.2 32.0 0.51 0.60 0.56 0
24.5 25.4 32.0 0.50 0.57 0.55 0
24.7 25.5 32.0 0.49 0.56 0.54 0
24.9 25.7 32.0 0.48 0.53 0.51 0
21
