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Equipment User Manual
Autotune (PRoG > PId > TUNE)
Select the Autotune (AUto) command. The unit displays StRt.
Confirm Autotune activation. The unit attempts to optimize the P, I, and d
settings by stimulating the system and measuring the response. If the A.to
time out period expires before the Autotune operation can complete, the
unit displays a failure message E007. If the Autotune operation completes
successfully, the unit displays the message “doNE” and the Run mode is
switched to IDLE.
The Autotune function will select the tuning algorithm depending on the stability of
current process and the error difference between current process and the Control
Setpoint (SP1). If the process is relatively stable (i.e: at room temperature), a bump test
will be performed to determine the plant characteristics.
If the process is hot, or if the process is within 10% of Control Setpoint, limit cycle
oscillation will be performed with the tuning setpoint taken at the process value when
the Autotune function is triggered. Autotuning may be performed as many times as
needed or when the operating conditions (i.e: process load, or setpoint) have changed
significantly. To obtain good tuning results, ensure the process is stable prior to
triggering autotune function. The process is stable when it is at ambient temperature, or
it is tracking Control Setpoint (SP1) in auto mode.
Adjusting Temperature on Controllers (Omega Platinum Model)
1.
Press the right arrow button one time until “SP
-
1” is displayed.
2.
Press the enter button to access the temperature screen.
3.
Use the left and right arrow buttons to set desired temperature.
4.
Once the desired temperature is set, press the enter button to return to the main
screen. Heaters will ramp to correct temperature.
Temperature Controller Layout and Description of Button Actions
Figure 1. Controller Layout
Summary of Contents for BEAHM DESIGNS 43-B
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