Duty Cycle Monitor (Dcm) (Function .42); Autotune Tuning Data (Functions .43 - Omega CN9000A Series User Manual

4.3.2 Duty Cycle Monitor (DCM) (Function .42):

Monitors percentage of power used in the previous proportioning
cycle. Average several readings for a more accurate result.
Power requirements outside the range 20%-80% may be difficult to
control and autotune.
1 To start monitoring:
2 To return to normal operation:
3 To view readings:
4 To stop monitor:
(Readings are retained)
5 Reset
Readings reset on next
monitor start.
Monitor and readings reset

4.3.3 Autotune Tuning Data (Functions .43 -.49)

Functions .43 through .49 provide data on size and length of
oscillations used by the controller in "learning the system" while
autotuning. Refer to Figure 4-3. Also refer to Section 5.1, Autotune.
Function .43:
Function .44:
Function .45:
Function .46:
Function .47:
Function .48:
Function .49:
Temperature
Autotune
setpoint
Figure 4-3. Autotune Tuning Data (Functions .43-.49)
48
Select Function .38/Option 1
Press P
Select Functions .39-.42
Select Function .38/Option 0
Select Function .38/Option 1
or On de-powering
OS1 (overshoot 1)
OS2 (overshoot 2)
US (undershoot)
T1 (quarter cycle time 1)
T2 (quarter cycle time 2)
T3 (quarter cycle time 3)
T4 (quarter cycle time 4)
OS1
Quarter cycle times (OCT)
new PID
values
entered
overshoot (OS)
undershoot (US)
OS2
US
T1 T2 T3
T4
Time