leave settings mode. It will also leave settings mode if the “Sel” button
is used to cycle through all of the available parameters and the end of
the settings menu is reached.
4. The following parameters can be adjusted, with the format of
[parameter name]:[value] (value with *asterisk is the default):
4.1 [SPED]:[FAST, *NORM, SLOW, AUTO]
This Speed setting adjusts the parameters (gains) used for PID
control. AUTO are the gains resulting from autotuning the controller
(explained in Chapter 4). The NORM gains are preset values that
should work well for smaller water baths or higher flow rates, where
there isn’t much time delay between the heater turning on and the bath
sensor warming up. The SLOW setting will work better for setups
with large water baths or longer delays between the heater and bath,
and FAST will work best when the bath sensor warms very quickly
after the heater turns on.
4.2 [INPT]:[*AUTO, ANLG, DGTL]
This sets the input mode for the controller’s setpoint. AUTO will
detect if an analog voltage is connected to the front panel "Setpoint"
BNC connector and use it, otherwise it will use the digital setpoint.
ANLG will force the analog setpoint to be used, even if nothing is
connected to the BNC, and DGTL will force the digital setpoint to be
used, even if an analog input is connected.
4.3 [TUNE]:[YES, *NO]
The TUNE parameter will start autotuning the controller if it is set to
“YES,” and the controller exits the settings menu (either by timing-out
after 10 seconds or after other parameters are adjusted). Autotuning
will not run after exiting the settings menu if TUNE is set to “NO”. See
chapter 4 for more information on auto-tuning.
4.4 [VERB]:[*ON, OFF]
The VERB (Verbose) parameter either enables the controller to output
text diagnostic and error messages over its serial port (ON), or it
disables text output from the controller (OFF). Disabling text output
can be useful if data is being recorded in numerical format for post-
processing and it is undesirable to mix text output in with the rest of
the numerical data being recorded.
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