Siemens Acvatix SAS Series User Manual

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Siemens Actuators SAS.., SAT.. for valves CE1P4041en
Smart Infrastructure Functions and control 2019-04-09
4.1.1 Combination with RVD.. controllers for direct domestic
hot water distribution by heat exchanger
The design based slow reaction on control signals of SAS31.., SAS81.. and
SAT31.. actuators doesn’t allow the actuator to react on very short control pulses.
Only control pulses of a sufficient length (ca. >50 ms for SAS31.53, SAS81.33 and
SAT31..; ca. >300 ms for the remaining SAS31.. and SAS81.. types), allow for a
sufficient reaction.
Especially the direct domestic hot water control does not allow such long control
pulses.
The specific optimized control loops – e.g. equipped with an SIGMAGYR RVD..
controller and SQS359.05 actuator
1)
– work with pulses down to 40 ms.
Some of the actuators mentioned above are not able to work with these short
pulses.
The following table shows which actuators can be used for those special
applications.
Controller Plant type Preferred actuator Valve line DN k
vs
RVD130
1)
RVD1357109
1)
RVD135/309
1)
RVD140
RVD144/109
RVD145/109
RVD139
1)
4 und 5
SQS35.53
1)
SAS31.53
VVG44.. DN 15…40 0.25…25
SQS259.53
1)
SAT31.008
VVG549.. DN 15…25 0.25…6,3
SQS259.43
1)
SAT31.51
SKD32.21..
VVG41..
VVF53..
DN 15…50
0.63…40
0.16…40
RVD230
1)
RVD235/109
1)
RVD250
RVD255/109
RVD240
1)
RVD245/109
1)
RVD260
RVD265/109
.. - 4
SQS35.53
1)
SAS31.53
VVG44.. DN 15…40 0.25…25
SQS259.53
1)
SAT31.008
VVG549.. DN 15…25 0.25…6,3
SQS259.43
1)
SAT31.51
SKD32.21..
VVG41..
VVF53..
DN 15…50
0.63…40
0.16…40
1)
No longer available.
Notes

Siemens Acvatix SAS Series Specifications

General

Brand	Siemens
Model	Acvatix SAS Series
Category	Controller
Language	English