Samson 3730-4, Монтаж и эксплуатация

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5.6 Initialization
During initialization the positioner adapts it-
self optimally to the friction conditions and
the signal pressure demand of the control
valve.
The type and extent of self-adaptation de-
pends on the set initialization mode (see sec-
tion 5.6.1).
MAX is the default setting for initialization
based on the maximum nominal range.
If configuration is enabled via Code 3 ,
Code 6 can be used to change to other ini-
tialization modes.
If the positioner has been initialized once al-
ready, it will automatically go to the operat-
ing mode used last after the electrical refer-
ence variable is applied, Code
0
appears
on the display.
If the positioner has not yet been initialized,
the
symbol appears on the display and
the symbol starts to blink.
NOTICE
After the positioner has been mounted onto
another actuator or its mounting location
has been changed or prior to re-initializing
the positioner, the positioner needs to be re-
set to its default settings. Refer to section 5.9
on page 71.
4
Start the initialization process by
pressing the INIT key with a suitable
tool.
The time required for an initialization pro-
cess depends on the transit time of the actu-
62
EB 8384-4 EN
Start-up and settings
Simplified start-up
For most applications, the positioner with its default settings is ready for operation,
provided it has been properly attached.
After the fail-safe position and the volume restriction have been set, the positioner only
needs to be initialized by pressing the INIT key.
NOTICE
Prior to starting the initialization procedure, check the maximum permissible supply
pressure of the control valve to prevent the valve from being damaged. On initialization,
the positioner supplies the maximum available supply pressure. If necessary, restrict the
signal pressure by using a pressure reducing valve upstream of the control valve.
Initialization is run in default mode
MAX (section 5.6.1). During this process, the
positioner adapts itself optimally to the maximum travel/angle of rotation range.
The only parameter that must be checked is the direction of action, i.e. whether the default
setting (Code
7 to
ää
= increasing/increasing) matches the application or whether it
must be changed.
The initialization modes described in following serve to individually adapt and optimize
the positioner to the way it is attached to the valve.