Siemens Acvatix SAX Series User Manual

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Siemens Actuators SAX.., SAY.., SAV.., SAL.. for valves CE1P4040en
Building Technologies Functions and control 2018-12-05
4 Functions and control
4.1 3-position control
A 3-position signal drives the actuator
via connection terminals Y1 or Y2. The
required position is transferred to the
valve.
1 A/D conversion
2
Control
functions
Identification of seat
Control of direction
Motor control
Manual adjustment
3 Brushless DC motor
4 Gear train
Manual adjuster
Positioning
signal
Stroke actuator Rotary actuator
Control path
valve AàAB
Bypass valve
B à AB
Voltage at Y1
Actuator’s stem
extends
Actuator’s spindle
turns in clockwise
direction
Opening Closing
Voltage at Y2
Actuator’s stem
retracts
Actuator’s spindle
turns in counter-
clockwise direction
Closing Opening
No voltage at Y1
and Y2
Actuator’s stem
maintains the
position
Actuator’s spindle
maintains the position
Maintains the position
Observe information given in chapter "Acting direction and flow characteristic" on
page 61.
Internal control ensures very constant positioning times and determination of the
actuator’s position.
Note

Siemens Acvatix SAX Series Specifications

General

Brand	Siemens
Model	Acvatix SAX Series
Category	Controller
Language	English