Samson 373 Series User Manual

122 EB 8384-2 EN
Malfunctions
Example:
S
Example:
Error caused by pin po-
sition
Î Refertothecodelist(section11.4)for
possible causes and the recommended
action.
Fault alarm output
'Maintenance alarm' as the condensed state
causes the optional fault alarm output to be
switched.
− The 'Function check' condensed state can
also activate the fault alarm output
(Code32).
− The'Maintenancerequired/Maintenance
demanded' condensed state and 'Out of
specication'canalsoactivatethefault
alarmoutput(Code33).
9.1 Conrming error messages
Enable conguration:
1. Turn untilCode3appears(read-
ing: No).
2. Press , the code number 3 blinks.
3. Turn
until YES appears.
4. Press
toconrm(reading: ).
Conrming error message:
1. Turn until the the error code that
you want appears.
2. Press toconrmtheerrormessage.
9.2 Emergency action
Fail-safeactionistriggeredbythei/pcon-
verter or solenoid valve and upon supply air
failure. The positioner fully discharges its
pneumatic output to the atmosphere, causing
the mounted actuator to be vented. As a re-
sult, the valve moves to the fail-safe position.
The fail-safe position depends on how the
springs are arranged in the pneumatic actu-
ator (air-to-close or air-to-open).
Whenthesupplyairfails,whentheoptional
solenoid valve is triggered and after reach-
ing the shutdown signal, all positioner func-
tions,exceptopen/closedloopcontrol,re-
main active (including diagnostics as well as
position and status feedback).
Emergency action in the event of valve or ac-
tuator failure is described in the associated
valve and actuator documentation.
Î The plant operator is responsible for
emergency action to be taken in the
plant.
Tip

Samson 373 Series Specifications

General

Brand	Samson
Model	373 Series
Category	Valve Positioners
Language	English