English, Digital industrial controller, 6 operating the tuning and adaption functions – Burkert Type 1110 Benutzerhandbuch

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DIGITAL INDUSTRIAL CONTROLLER

english

Step 1:

Either use the tune function to determine starting parameters or select
the starting parameters in the parameter definition level,

Controller

option:
• Set the

proportional action coefficient / Gain Kp to a value that will

produce a lasting system deviation of < 80% of the given setpoint
change in the stationary process state.

• Set the

reset time Tr to a very high value (e.g. 9999 s).

• Leave the

derivative action time Td at 0 (works setting) if you are

trying to optimise a PI structure or set the derivative action time Td
to 0.1 if you wish to optimise a PI structure.

Step 2:

Select options in the parameter definition level,

Adaption option:

• Activate

adaption

• Select

Setpoint in several stages

Step 3:

Enter the required process setpoint in the process control level.
Under these conditions, the process setpoint is set in up to 5 stages
and, in doing so, the controller parameters are optimised in each
stage.

Configuration and parameter definition levels

Both in the configuration and also in the parameterisation levels, first the

Tune

module and then the

Adaption module can be used for adaption in the sub-menus.

However, Tune and Adaption cannot be run simultaneously (cf. Par. 7.4).
When the

Tune: on option is selected, the controller parameters are optimised the

first Time the setpoint changes. When using a corresponding output as detailed in
the table at paragraph 7.5, the

Adapt: on option produces an evaluation of the

controlled variable’s transient response with each change in the setpoint and, if
applicable, optimisation of the controller parameters.
The

↑↑: yes option activates a new setpoint is set in several stages within the

adaption function, each of these stages being used for one optimisation cycle.
If

↑↑:no is selected, optimisation takes place in one stage.

When the

↑: yes or PV↑: no option is selected, the adaption function performs

optimisation on the basis of the shortest control stabilisation time with 5 %
overshoot or an aperiodic transition response.

Process operating level

The adaption process cannot be influenced directly in the

process operation level. A

running adaption cycle can, however, be aborted by pressing the MANUAL/
AUTOMATIC key twice.

If the setpoint is changed while an adaption cycle is running, adaption is aborted
and a new adaption cycle is initialised on the basis of the new setpoint according to
the options selected during configuration or parameter definition.

7.6

Operating the tuning and adaption functions

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