Burkert Type 1067 - Manual (Page 72)

E-20-
POSITIONER 1067 4 OPERATION
To perform a setting within the X-SENS and INPUT menu items, briefly press the MANUAL/AUTOMA-
TIC key again. One of the menu sub-items then appears in the display. It is possible to switch back
and forwards between these sub-items, each of which describes a possible setting, by again pressing
the arrow keys. The actual setting is carried out by pressing the MANUAL/ AUTOMATIC key on the
selected menu sub-item.
Fig. 25 Signifi cation of the menu options in the main menu
Basic function Associated settings
X-SENS
Type of information transfer between the actuator and travel measuring
system (factory-set to DIRECT)
- DIRECT - Linear relationship
- LEVER - Sinusoidal relationship (use of a lever)
INPUT Specification of selected unit signals
- 4 ... 20 MA - Unit signal current 4 ... 20 mA
- 0 ... 20 MA - Unit signal current 0 ... 20 mA
- 0 ... 10 V - Unit signal voltage 0 ... 10 V
ADDFUNCT Configuration of additional functions
AUTOTUNE Actuation of automatic adaptation of the actuator to the valve
END End of menu
Under the menu option X-SENS, indicate whether the mechanical transmission of path information from
the positioner to the feedback/positional transducer is based on a linear or sinusoidal relationship. A
sinusoidal relationship results if the lever mechanism is used for the transmission of path information (cf.
section 3.1.1). In this event, when LEVER is confirmed an internal linearization takes place by means of
an approximated sinusoidal function.
The ADDFUNCT menu item can be skipped on the initial setting up. It is used only to configure additio-
nal functions.
The AUTOTUNE menu item is used to start the programme for automatic parametering of the positio-
ner. This automatically triggers the following functions:
- Matching the sensor signal to the (physical) stroke of the control valve used.
- Determining parameters of PWM signals for control of the internal solenoid valves.
- Optimum adjustment of the control parameters of the position controller (target function: fastest pos-
sible movement to the set position without hunting).
The programme for automatic parametering is started by setting the AUTOTUNE menu item in the main
menu and then pressing the MANUAL/AUTOMATIC key and holding for 5 seconds. TUNE is displayed
with a countdown from 5 to 0. The word AUTOTUNE then flashes for approximately 30 to 120 seconds
(depending on the actuator volume). After the flashing ends, the message TUNE END is displayed.
Note: In case of complete delivery of a valve fitted with a positioner, the AUTOTUNE function has
already been run through in factory. In order to obtain the best accuracy, it is recommended to run the
AUTOTUNE function once more before putting the valve in operation.
If it is not possible to fully complete the AUTOTUNE routine, an error message is displayed (refer to the
list of error messages in part 5).