Confirming Error Messages; Emergency Action - Samson 3730-4 Mounting And Operating Instructions

Malfunctions
Condensed state
No message
The message with the highest priority deter-
mines the condensed state in the positioner.
If fault alarms exist, the possible source of
error is displayed in Code 49 onwards. In
this case, Err is displayed.
Example:
S
Î Refer to the code list (section 11.4) for
possible causes and the recommended
action.

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: ).
Confirming error message:
1. Turn until the the error code that
you want appears.
2. Press to confirm the error message.
120
Positioner display
–
Example:
Error caused by pin po-
sition

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, the optional sole-
noid valve or forced venting is triggered and
after reaching the shutdown signal, all posi-
tioner functions, except open/closed loop
control, remain 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 8384-4 EN