Operating Instructions
Corrective action
Fault indications and warning indications
66 | 80
A6V12052002
Indication on display
Description/cause
Remedy
EMCY behav. active
Operation mode EMERGENCY is
active (EMERGENCY signal was
sent).
0V are applied at the
EMERGENCY input.
● Detect cause for
EMERGENCY signal.
● Verify failure source.
● Apply +24 Vdc at
EMERGENCY input.
I/O interface
The actuator is controlled using
the I/O interface (parallel).
Check I/O interface.
Handwheel active
Manual operation is activated.
Start motor operation.
Interlock
An interlock is active.
Check interlock signal.
Interlock by-pass
By-pass function is interlocked.
Check states of main and by-pass
valve.
PVST active
Partial Valve Stroke Test (PVST)
is active.
Wait until PVST function is
complete.
SIL function active
1)
SIL function is active
For actuators controls in SIL version