Exposed, rotating parts (discs/balls) at the valve!
Pinching and damage by valve or actuator.
→
End stops may be set by suitably qualified personnel only.
→
Set end stops to ensure that they are NOT reached during normal operation.
Information
The setting sequence depends on the valve:
●
Recommendations for butterfly valves: Set end position CLOSED first.
●
Recommendations for ball valves: Set end position OPEN first.
Information
When leaving the factory (without valve), the screws [1] are not fastened, i.e. the
end stops must be set. If the actuator is mounted onto the valve with the screws [1]
fastened, the valve manufacturer has already performed the end stop setting. In this
case, the end stops must only be checked (use the handwheel to drive valve into
end positions).
9.2.1
End stop CLOSED: set
Figure 34:
End stop
[1]
Screws
[2]
End stop nut
[3]
Protective cap
1.
If the four screws [1] are fastened: Unfasten the screws [1] with approx. 3 turns.
2.
Move valve to end position CLOSED with handwheel. Check whether end stop
nut [2] rotates simultaneously.
→
Otherwise: Turn end stop nut [2] clockwise until end stop is reached.
3.
In case end position CLOSED has been passed: Turn back the handwheel by
several turns and approach end position CLOSED again.
4.
Turn end stop nut [2] counterclockwise by 1/8
th
turn.
Information: In this process, the protective cap [3] must not be unfastened.
➥
Thus, the end stop CLOSED within the part-turn actuator is set to a slightly
higher swing angle (approx. 1°) than the valve end position.
5.
Fasten screws [1] crosswise at 25 Nm.
●
Following end stop setting, the limit switching for end position CLOSED
can be set (refer to <Limit switching: set> chapter). For this, the switch
compartment must be opened and the indicator disc removed (refer to
<Switch compartment: open> chapter).
●
In general, the end stop OPEN does not require setting due to fact that
the swing angle was already set in the factory.
35
SGExC 05.1 – SGExC 12.1 Control unit: electronic (MWG)
ACExC 01.1 Non-Intrusive
Commissioning (basic settings)
