Autotune Damping - Omega CN8200 Series User Manual

Autotune
Damping Menu
Display Parameter
Damping
Note: The damping parameter specifies how aggressively the
controller performs its autotuning. The "Normal" setting is a
compromise between the fast recovery and overshoot. The
"Low" setting provides faster recovery, but with the possibility
of overshoot; the "High" setting a slower recovery, but with
minimum or no overshoot.
Recipe (Ramp/
Soak) Menu
Single Setpoint Ramp Time
This selection will cause the controller to 'ramp' the
process from the starting point (current process value)
to the setpoint in the time specified. This ramp will take
place at startup when selected from the Ramp/Soak menu.
The setpoint must be at least ±0.2% of sensor span for the
ramp to be employed.
Multi-Step Ramp
This selection will enable the programming of a recipe (make all
ramp/soak recipe variables visible). Recipes can be resumed on
startup if interrupted by a power failure or initiated, held, and
terminated from the front panel via the Mode Menu or with the
logic input option (initiate and held/resumed only).
Holdback Band
Specifies the maximum number of degrees above or below
setpoint that the process can be for the segment timer to keep
going. The timer will hold while the process settles back into the
band and then continue. If this feature is not desired, this
parameter should be set to
Termination State
This parameter determines what the control will do at the
completion of a recipe. Last Setpoint refers to the last
temperature specified in the ramp/soak recipe. Default
Setpoint refers to the standard setpoint which was in effect prior
to recipe initiation.
Recycle Number
Specifies the number of times after the first time that the recipe
is run before the program terminates.
Selection
Low
Normal
High
which will disable it.
26
Recipe (Ramp/
Soak) Menu
Power Fail Resume
Setting this parameter to On will cause the control to resume
a recipe which was active when a power failure occurred. The
recipe will resume at the start of the last active ramp or soak
segment.
Ramp/Soak Events (1-8)
Ramp/Soak events occur at the beginning of their designated
segment. All events are terminated once the recipe has been
completed or terminated.
Display Parameter
Recipe Option
If a ramp/soak error
condition occurs, the
upper display will
toggle between
Single-Setpoint
and the numeric error
Ramp Time*
code for three seconds
*NOTE: Only available when single-setpoint ramp is selected.
before the recipe
terminates. Possible
Holdback Band
error codes are:
02 = Recipe Empty
Termination State
(i.e. no non-zero ramp
times)
05 = Insufficient
Setpoint-Process Value
Deviation
27
(If alarms are configured as ramp/soak events.)
Selection
Single-Setpoint
Ramp
Multi-Step Ramp
Disabled
1-9999 mins.
Off-100
Last Setpoint
Default Setpoint
Recipe to Standby