Coolpak PCA050, Руководство по эксплуатации, Страница: 29 / 43

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Down Key
Each press of the Down Arrow key decrements or reduces the values or
settings on the SV display.
Up Key
Each press of the Up Arrow key increments or advances the values or
settings on the SV display.
5-5 Auto-Tuning PCA Series Chillers
The Auto-Tune function lets you fine-tune the control PID to process requirements. Activate
the Auto-Tune function whenever the process under control changes. Don't be alarmed by
control
response. It may take the process temperature above and below the set points as many as
three (3) times. It will then level off and control to the process set point.
Auto tuning can
take up to 45 minutes , and is best done before any product is being run.
Important!
Factory default settings are: P = .3, I = 7, and D = 1
To auto-tune the controller:

Press and hold down the AT AT key for several seconds until the AT indicator flashes.

The AT LED flashes to indicate that the control is tuning itself.When the AT LED light stops
flashing, the controller is tuned and ready for operation.
Important!
Do not change any of the control settings without consulting
the Fleming Dynamics Service Department.
The Fleming Dynamics Pty Ltd warranty does not cover chiller failures
from tampering with controller settings !