Malfunctions; Emergency Action - Samson TROVIS 5724-8 Series Mounting And Operating Instructions

8 Malfunctions

Î Troubleshooting (see Table 4).
Note
Contact SAMSON's After-sales Service for
malfunctions not listed in the table.

8.1 Emergency action

The valve, on which the electric actuator with
fail-safe action is mounted, is moved to its
fail-safe position upon supply voltage failure
(see section 3.1).
Table 4: Troubleshooting
Error
Actuator or plug stem does not
move on demand.
Actuator or plug stem does not
move through the whole range.
No readings shown on the
display.
Incorrect operating action after
pressing [I] and [O] keys
The electric actuator with process
controller does not perform the
functions as required.
EB 5724-8 EN
Plant operators are responsible for emergen-
cy action to be taken in the plant.
Emergency action in the event of valve fail-
ure is described in the associated valve doc-
umentation.
Possible reasons
Actuator is blocked.
No or incorrect supply voltage
connected.
No or incorrect supply voltage
connected.
The display connection is interrupt-
ed.
The A1.1 configuration item and
A1.5, if applicable, are not set
correctly.
The configuration of the electric
actuator does not meet the
application requirements.
The electric actuator was reset to
its default settings without adapting
the configuration to the application
afterwards.
Tip
Recommended action
Check attachment.
Remove the blockage.
Check the supply voltage and
connections.
Check the supply voltage and
connections.
Remove the front housing cov-
er and check that the display is
connected correctly.
Check configuration.
Check configuration.
If necessary, refer to the
Configuration Manual
u KH 5724-8.
Malfunctions
35