Samson 3730-1 - Initializing the Positioner

EB 8384-1 EN 75
Operating the positioner
7.5 Initializing the positioner
Risk of injury by exposed moving parts on
the positioner, actuator or valve.
Do not touch or block exposed moving parts.
The process is disturbed by the movement of
the actuator or valve.
Do not perform the initialization while the
process is running. First isolate the plant by
closing the shut-off valves.
Î Check the max. permissible signal pres-
sure of the valve before starting initial-
ization. During initialization, the posi-
tioner issues an output signal pressure up
to the maximum supply pressure sup-
plied. If necessary, limit the signal pres-
sure by connecting an upstream pressure
reducing valve.
Reset positioner to its default settings (see
section7.7) before mounting it on a different
actuator or changing its mounting position.
During initialization the positioner adapts it-
self optimally to the friction conditions and
the signal pressure required by the control
valve.
The type and extent of self-adaptation de-
pends on the preset parameters.
MAXisthedefaultsettingforthenominal
range (Code P4). During the initialization
process, the positioner determines the travel/
rotational angle of the closing element from
the CLOSED position as far as it will go in
the other direction.
For normal operation, simply start initializa-
tion over Code P15 after mounting the posi-
tioner on the valve, setting the volume re-
striction and setting the fail-safe position
(P2). The positioner only works with its de-
fault settings.
Start initialization by activating Code P15 as
follows:
1. Turn untilCodeP15appears.
2. Press
and hold for six seconds.
Reading: 6-5-4-3-2-1-
Initialization starts. The display blinks.
The time required for the initialization
procedure depends on the actuator transit
time and can take a few minutes.
WARNING
!
NOTICE
!
Note
Tip
Note