12.
Corrective action
12.1.
Faults during commissioning
Table 28:
Faults during operation/commissioning
Remedy
Description/cause
Fault
Set gear stage of the reduction gearing.
The control unit might have to be exchanged.
Reduction gearing is not suitable for turns/stroke
of the actuator.
Mechanical position indicator cannot
be set.
●
Determine overrun: Overrun = travel covered
from switching off until complete standstill.
●
Set limit switching again considering the over-
run. (Turn handwheel back by the amount of
the overrun)
The overrun was not considered when setting the
limit switching.
The overrun is generated by the inertia of both the
actuator and the valve and the delay time of the
actuator controls.
In spite of correct setting of mechan-
ical limit switching, actuator operates
into the valve or actuator end position.
Dismount handwheel. Replace overload protection
and remount handwheel.
Actuator in version with overload protection for
manual operation: Shear pin rupture due to excess-
ive torque at handwheel.
Handwheel rotates on the shaft
without transmitting torque.
Change speed.
Speed setting is incorrect.
Actuator operation is too fast or too
slow.
Set speed reduction.
Speed reduction switched off or incorrectly set be-
fore reaching end positions.
Actuator suddenly stops in end posi-
tions.
12.2.
Fault indications and warning indications
Faults interrupt or prevent the electrical actuator operation. In the event of a fault,
the display backlight is red.
Warnings have no influence on the electrical actuator operation. They only serve
for information purposes. The display remains white.
Collective signals include further indications. They can be displayed via the
Details
push button. The display remains white.
Table 29:
Faults and warnings via status indications in the display
Remedy
Description/cause
Indication on display
For a description of the status texts, refer to Manual
(Operation and setting).
Instead of the valve position, a status text is dis-
played.
S0001
For indicated value > 0: Press push button
De-
tails
.
For details, refer to <Warnings and Out of specific-
ation> table.
Collective signal 02:
Indicates the number of active warnings.
S0005
Warnings
For indicated value > 0: Press push button
De-
tails
.
For details, refer to <Not ready REMOTE and
Function check> table.
Collective signal 04:
Indicates the number of active signals.
S0006
Not ready REMOTE
For indicated value > 0: Press push button
Details
to display a list of detailed indications.
For details, refer to <Faults and Failure> table.
Collective signal 03:
Indicates the number of active faults.
The actuator cannot be operated.
S0007
Fault
For indicated value > 0: Press push button
De-
tails
.
For details, refer to <Warnings and Out of specific-
ation> table.
Collective signal 07:
Indication according to NAMUR recommendation
NE 107
Actuator is operated outside the normal operation
conditions.
S0008
Out of specification
74
SAV 07.2 – SAV 16.2 / SARV 07.2 – SARV 16.2 Control unit: electronic (MWG)
Corrective action
ACV 01.2 HART
