10.
Corrective action
10.1. Faults during commissioning
10.1.1 Mechanical position indicator
Fault description
Mechanical position indicator cannot be set.
Possible cause
Actuator turns/stroke have been modified at a later date.
Remedy
Set reduction gearing (page 54) or replace control unit if required.
10.1.2 Fault in end position (overrun not considered)
Fault description
Actuator runs to end stop although the limit switches work properly.
Possible cause
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 controls.
Remedy
1. Determine overrun:
Overrun = travel covered from switching off until complete standstill.
2. Set limit switching again (page 45) considering the overrun (turn
handwheel back by the amount of the overrun).
10.1.3 Push buttons do not react
Fault description
Push buttons do not react.
The controls may not be operated via the local controls.
Display indicates:
Possible cause
.
RESTRICTED
means that the local controls of the AUMATIC have not
been released yet.
.
EMERGENCY STOP
signifies that the EMERGENCY STOP operation
mode has been activated upon operating an EMERGENCY STOP but-
ton (option).
Remedy
For
RESTRICTED
:
Ò
A release must be initiated externally via bus or input signal. See param-
eter
ENABLE LOCAL MODE
.
For
EMERGENCY STOP
:
Ò
EMERGENCY STOP button released.
57
Multi-turn actuator SAExC 07.1 – SAExC 16.1/SARExC 07.1 – SARExC 16.1
Non-Intrusive
Operation instructions
with actuator controls AUMATIC ACExC 01.1 Profibus DP
LOCAL
RESTRICTED
S0
E2
100%
OPEN POSITION
EMERGENCY STOP
S0
E2
100%
OPEN POSITION
