Burkert 8630 Operating Instructions Manual page 98

X.tune
Autotuning of the positioner
With the X.TUNE sub-menu, you start a program that performs an automatic parametring of the positioner.
The following parameters are automatically calculated:
• Matching the sensor signal to the (physical) stroke of the control valve
• Determining the parameters of PWM signals controlling the internal solenoid valves
• Optimum adjustment of the control parameters of the position controller (target function: quickest possible movement to
set the position without hunting)
To start the autotune function, call the X.TUNE option within the main menu, then leave it by pressing the MANUAL-AUTOMATIC
key for 5 seconds.
Start of the automatic adjustment of the positioner to the operating conditions
Display
TUNE 5
TUNE 4
:
TUNE 0
¦ X.TUNE 1
¦ X.TUNE 2
¦ X.TUNE 3
¦ X.TUNE 4
:
X.TUNE.END
X.ERR X.X
Fig. 6.4: Display during launching and performing the autotune
Advice: The basic configuration of the Top Control is pre-set by the factory. It is absolutely necessary to perform the autotune
function during commissioning. In that manner, the positioner automatically acquires the optimal settings according to the
operating conditions (Pressure supply for the TopControl; Medium stength for the valve actuator).
ATTENTION!
Avoid any disfunction of the controller, by performing the autotune procedure with the same operating
conditions as in future process operations!
END
Quit the main menu and display the version of the software
In order to quit the main menu, select the submenu END with the arrow key, then validate. On the right hand side of the screen,
the software version is displayed (End xx).Press the MANUAL/AUTOMATIC key for 3-5 seconds, and the message EEPROM
appears on the display during the storage of the changes. The instrument is then in the previous mode (MANUAL-
AUTOMATIC), before the main menu is entered.
98
Description
Countdown from 5 to 0, before starting the
autotune
Display the already passed steps of the
autotune procedure
(The advancement is figured on a varying
barchart (displayed on the right)
hand side of the LCD)
Blinking display => End of the autotune
function
Display in error occurence
(right display: error number; see chapter 8)
5 s
Operating instructions no. 800607