Confirming Error Messages; Emergency Action - Samson 3730-2 Mounting And Operating Instructions

Malfunctions
Example:
S
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
specification' can also activate the fault
alarm output (Code 33).

9.1 Confirming error messages

Enable configuration:
1. Turn until Code 3 appears (read-
ing: No).
2. Press , the code number 3 blinks.
3. Turn until YES appears.
4. Press to confirm (reading: ).
122
Example:
Error caused by pin po-
sition
Confirming error message:
1. Turn until the the error code that
you want appears.
2. Press to confirm 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).
Tip
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.
EB 8384-2 EN