Emergency Action - Samson TROVIS 6495-2 Mounting And Operating Instructions

Error
Internal temperature
Temperature too low
(–5 °C)
Internal temperature
Temperature too high
(65 °C)
Communication failure
AI1(2, 3, 4) timeout
Communication failure
C1(2)-SPC timeout

9.2 Emergency action

The control function no longer works after device failure. In this case, isolate and shut-off
valves.
Plant operators are responsible for emergency action to be taken in the plant.
Tip
Emergency action in the event of valve failure is described in the associated valve documen-
tation.
EB 6495-2 EN
Possible reasons
The permissible ambient tem-
perature range between 0 and
50 °C has not been kept.
No write access given within the
timeout for the signal monitoring
of the interface assigned to an
analog input.
No write access given within the
timeout for the signal monitoring
of the interface assigned to Con-
troller [1] or [2].
Malfunctions
Recommended action
Î Check the ambient tempera-
ture.
Î Check location of installa-
tion.
Î Check timeout setting
(AI1(2, 3, 4).TOUT pa-
rameter in I.1(2, 3, 4).1)
configuration item.
Î Check interface (see the
'Operation' section).
Î Check timeout setting (SPC.
TOUT parameter in
C.2.1.6 configuration item).
Î Check interface (see the
'Operation' section).
9-3