7.
Basic settings for commissioning
Definition
Basic settings such as type of seating, torque and limit switching are required for
safe commissioning of the actuator controls together with the actuator. Basic settings
for display, such as date and time or display formats, can be changed, if required.
7.1.
Type of seating for end positions
Function
●
Selection of the type of seating (according to valve manufacturer's specifications)
-
Limit seating in end position
-
Torque seating in end position
●
For end positions OPEN and CLOSED, the following can be set individually:
Limit seating
Actuator controls switch off the actuator in the end positions (OPEN/CLOSED) set
via limit switching.
For end position seating via limit switching, you have to account for the overrun of
the actuator. Overrun [1] is the travel from switching off until complete standstill. The
overrun depends on the inertia of both the actuator and the valve and the delay time
of the actuator controls.
Figure 32: Limit seating
P
Tripping position
[1]
Overrun
Torque seating
Actuator controls switch off the actuator in the end positions via torque tripping.
For this, the torque switching has to be set to the tripping torque specified by the
valve manufacturer. When reaching the end position, the torque increases within the
valve seat. Actuator controls switch off the actuator once the set tripping torque has
been reached.
With this setting, the limit switching is used for signalling and must be set to trip
shortly before reaching the end position.
7.1.1.
Type of seating: set
Valve damage due to incorrect setting!
→
The type of seating setting (limit or torque seating) must match the selection for
the valve.
→
Only change the setting with prior consent of the valve manufacturer.
Customer settings M0041
Type of seating M0012
End position CLOSED M0086
End position OPEN M0087
Default value:
Limit
Setting values:
Limit
Seating in end positions via limit switching.
Torque
Seating in end positions via torque switching.
36
Actuator controls
Basic settings for commissioning
ACV 01.2/ACVExC 01.2 Profibus DP