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