Siemens MT SAS Series User Manual

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Siemens Actuators SAS.., SAT.. for valves CE1P4041en
Smart Infrastructure Functions and control 2019-04-09
The specified positioning times refer to the respective nominal stroke. Since the
end positions of rotary actuators are inside the actuator, the following remarks refer
to stroke actuators.
The resulting effective strokes vary, depending on the type of valve, resulting in
shorter or longer actuator positioning times.
Stroke of valve-actuator combination [mm]
Positioning time [sec]
Legend diagram
A Mechanical end position in actuator
B Valves with 5.5 mm nominal stroke
X Time to override idle stroke (delay time), see glossary
Deviations occur
· after several positioning signals Y1 and Y2 in the same direction since the stroke
movement starts with a delay of 50 ms (SAT31.., SAS31.53, SAS81.33) or 300
ms (SAS31../81..).
· when positioning signals Y1 and Y2 are active for less than 50 ms or 300 ms
since the stroke movement cannot be made in that case
.
Example of an actual position deviation on the SAT31.008 at a 50 ms delay.
A B C Y1 Y2 0
Calculated position Actual position
Positioning
time [ms]
Positioning signals
(power applied)
No power applied
Positioning times stroke
model
Notes

Siemens MT SAS Series Specifications

General

Brand	Siemens
Model	MT SAS Series
Category	Controller
Language	English