Samson 3731-3 Mounting And Operating Instructions page 79

Hardware errors
Error codes – Recommended action Condensed state message active, when prompted, Err appears.
62 x signal
Additional alarm at the fault
alarm output
Status classification [Maintenance required]
Recommended action Return the positioner to SAMSON AG for repair.
63 w too low
Status classification [No message]
Recommended action Check the reference variable.
i/p converter
64
Status classification Maintenance alarm (cannot be classified)
Recommended action Cannot be remedied.
When fault alarms exist, they are displayed here.
Determination of the measured data for the actuator has failed.
Conductive plastic element is defective.
The positioner continues to run in emergency mode, but should
be replaced as soon as possible.
The emergency mode on the display is indicated by a blinking
closed-loop control icon and 4 dashes instead of the position in-
dication.
Note on the control:
If the measuring system has failed, the positioner is still in a reli-
able state. The positioner switches to emergency mode where the
position cannot be accurately controlled anymore. However, the
positioner continues operation according to its reference variable
signal so that the process remains in a safe state.
The reference variable w is lower than 3.7 mA. This message oc-
curs whenever the power source that drives the positioner does
not comply with the standard.
This condition is indicated on the positioner display by LOW
blinking.
The positioner changes to the fail-safe position (SAFE).
If necessary, limit the current source downwards so that no values
below 3.7 mA can be issued.
The circuit of the i/p converter has been interrupted.
The positioner changes to the fail-safe position (SAFE).
Return the positioner to SAMSON AG for repair.
Code list
79
EB 8387-3 EN