DOUBLE LOOP CONTROL
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SETTING THE AUTO-TUNE
SET POINT
Simultaneously press both the Up-arrow S and
the Down-arrow T keys for approximately 3
seconds until the Input Menu prompt InPt appears
in the upper display and the Setup Menu prompt
SEt appears in the lower display:
InPt / Set
• Press the Up-arrow S key twice. 9LbL appears
in the upper display:
9LbL/ SEt
• Press the MODE key eleven times. AtSP will
appear in the lower display.
• Use the Up-arrow S and/or the Down-arrow T
keys to set the set point percentage, shown in the
upper display, to 90.
• Press the DSPY key to return to the main display
format.
AUTO-TUNING
Auto-tuning should be dome when the temperature
controller is operated for the first time or when the
accessory or set point is changed. It is not necessary to
redo the auto-tuning procedure if the temperature
controller or heaters have been turned off.
• Use the Up-arrow S and/or the Down-arrow T
keys to select the desired set point temperature.
The set point is shown in the lower display. The
actual temperature measured by the thermocouple
is shown in the upper display.
• Make sure the accessory is at room temperature.
The upper display should read between 18 and 26
degrees C.
• Press the MODE key twice. OFF will appear in
the upper display and Aut will appear in the lower
display.
OFF / Aut
• Press the Up-arrow S key. PidA will appear in
the upper display. Aut will alternate with tune in
the lower display.
• Press display and turn the heater switch on. The
set point will alternate with tune in the lower
display and the actual temperature will appear in
the upper display. The auto-tune process takes
approximately 5 minutes. At the end of the auto
tune process, the lower display shows the set
point and the upper display shows the actual
temperature, which should be maintained for an
additional 5 minutes.
• Press the DSPY key to return to the main display
format.
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