Siemens Flowrite 599 Series Owner's manual

Technical Instructions
Document No. 155-507
April 5, 2012
Flowrite™ 599 Series
SAX Electronic Valve Actuator
Non-spring Return, 24 Vac,
3-Position Control
Siemens Industry, Inc.
Description The Flowrite™ 599 Series SAX Non-spring Return (NSR), Electronic Valve Actuator
requires a 24 Vac supply and receives a 3-position control signal to control a valve.
This actuator is designed to work with Flowrite 599 Series 2-way and 3-way valves with
3/4-inch (20 mm) stroke.
Features •24 Vac/Vdc operating voltage
•Direct-coupled installation requires no special tools or adjustments
•Visual stroke indication
•Manual override
•Overload and stall protection
•Optional functions with auxiliary switches, potentiometer, and stem heater
•Maintenance-free
Application These electronic actuators are designed to be used with Flowrite 599 Series valves
with 3/4-inch (20 mm) stroke in hot and chilled water and steam service applications in
closed loop HVAC systems. They are particularly recommended for installations
requiring quick response and good rangeability.
Product Number SAX81.03U (Actuator Code 373)
Product
Replacements
Stroke Actuators SQX…
to SAX…
Replacement of SQX Series Actuators by SAX Series Actuators.
NOTE:
•When replacing actuators consider positioning force, and positioning times.
•Adjust the controller parameter "Running time" or "Positioning time", to ensure
stable control.
SQX.. SAX..
Pos. Time [s] Pos. Force [N] Pos. Time [s] Pos. force [N]
SQX82.. SQX82.00U 120 700
SQX82.03U 30 700 SAX81.03U 30 800

Technical Instructions Flowrite™599 Series SAX Electronic Valve Actuator
Document Number 155-507 Non-spring Return, 24 Vac 3-position (Floating) Control
April 5, 2012
Page 2 Siemens Industry, Inc.
Specifications
Power supply
Operating voltage 24 Vac +20% / 24 Vdc + 20% / -15%,
Class 2
Frequency 45 to 65 Hz
Fusing of supply lines Max. 10A slow
Power consumption
Stem retracts/extends 8 VA/3.75 W
Function data Positioning times 30 s
Positioning force 800 N
Nominal stroke 20 mm
Permissible medium temperature (valve fitted) -13°F to 302°F (-25° to 150°C)
Signal inputs Positioning signals "Y1", “Y2” 3-position
Voltage 24 Vac ± 20%/24 Vdc + 20%/-15%
Connecting cable Wire gauge 16 to 24 AWG
Cable entries 3 entries for 1/2" conduit connection
Degree of protection Housing from vertical to horizontal IP54, as per EN 60529
With Weathershield ASK39.1 NEMA 3R
Insulation class for 24 Vac/Vdc Class III, as per EN 60730
Environmental
conditions
Operation IEC 60721-3-3
Climatic conditions Class 3K5
Mounting location Indoors (weather-protected)
Temperature general 23°F to 131°F (-5°C to 55°C)
With heating element ASZ6.6 5°F to 131°F (-15°C to 55°C)
Humidity (non-condensing) 5 to 95% rh
Transportation IEC 60721-3-2
Climatic conditions Class 2K3
Temperature -13°F to 158°F (-25°C to 70°C)
Humidity < 95% rh
Storage IEC 60721-3-1
Temperature 5°F to 131°F (-15°C to 55°C)
Humidity 5 to 95% rh
Max. media temperature when mounted on 302°F (150°C)
a valve
Environmental
compatibility
ISO 14001 (environment)
ISO 9001 (quality)
SN36350 (environment-compatible
products)
RL 2002/95/EG (RoHS)
Standards CE conformity
As per EMC directive 2004/108/EC
Immunity EN 61000-6-2:[2005] Industrial
Emissions EN 61000-6-3:[2007] Residential
Electrical safety EN 60730-1
C-tick N 474
UL conformity (24 Vac/Vdc) UL 873
C-UL conformity (24 Vac/Vdc) Certified to Canadian standard C22.2
No. 24-93

Flowrite™599 Series SAX Electronic Valve Actuator Technical Instructions
Non-spring Return, 24 Vac 3-position (Floating) Control Document Number 155-507
April 5, 2012
Siemens Industry, Inc. Page 3
Potentiometer ASZ7.5/135 0 to 135 +5%
Voltage 10 Vdc
Current rating <4 mA
Specifications
(Continued)
Accessories Potentiometer ASZ7.5/200 0 to 200 + 5%
Voltage 10 Vdc
Current rating <4 mA
Potentiometer ASZ7.5/1000 0 to 1,000 +5%
Voltage 10 Vdc
Current rating <4 mA
Auxiliary switch ASC10.51
Switching capacity 24 to 230 Vac, 6A res., 3A Ind.
Stem heating element ASZ6.6 24 Vac, 30 W
Accessories NOTE: Installation instructions are included with each accessory.
Product Number Auxiliary
Switch
ASC10.51
Potentiometer
ASZ7.5/.. 1)
Stem Heating
Element
ASZ6.6
SAX81.03U Max. 2 Max. 1 Max. 1
1) Available with 135 , 200 , or 1000 .
Auxiliary switch
ASC10.51
Auxiliary switch ASC10.51 switches on or off when a certain position is reached. The
switching point can lie between 0 to 100%.
Potentiometer
ASZ7.5/..
Potentiometer ASZ7.5/.. (1000 , 200 , 135 ) delivers an ohmic value to the
controller giving the exact position of the actuator (continuous position feedback).
Stem Heating Element
ASZ6.6
Stem heating element ASZ6.6 prevents the formation of ice on the stem when the
medium temperature drops below 32°F (0°C). It is suited for universal use with valves
having a stem or spindle diameter of 10 or 14 mm.
Weather shield
ASK39.1
Weather Shield ASK39.1 protects the actuator when installed outdoors. Provides NEMA
3R protection.

Technical Instructions Flowrite™599 Series SAX Electronic Valve Actuator
Document Number 155-507 Non-spring Return, 24 Vac 3-position (Floating) Control
April 5, 2012
Page 4 Siemens Industry, Inc.
Components
A Manual adjuster (with slide switch)
B Wiring knockouts
C Position indication
D Status indication (SAX61.03U only)
E Housing cover
F Valve stem coupling
G Yoke
H Valve neck coupling
Operation The actuator accepts a 24 Vac control signal to Y1, which causes the actuator’s stem
retainer to move toward the valve (extend). A 24 Vac control signal to Y2 causes the
actuator’s stem retainer to move toward the actuator (retract). The stroke travel is
proportional to the length of time the signal is applied.
When power is turned off or in the event of a power failure, the actuator maintains its
position.
In the 3-position (floating) actuators, deviation occurs (See Figure 1):
•after several positioning signals Y1 and Y2 in the same direction since the stroke
movement starts with a delay of 50 ms.
•when positioning signals Y1 and Y2 are active for less than 50 ms since the stroke
movement cannot be made in that case.
A B C Y1 Y2 0
Calculated
position
Actual
position
Positioning
time [ms]
Positioning signals
(power applied)
No power
applied
Accurate position feedback is made possible with the help of a potentiometer.
Figure 1. Three-position (Floating) Actuator Deviation.

Flowrite™599 Series SAX Electronic Valve Actuator Technical Instructions
Non-spring Return, 24 Vac 3-position (Floating) Control Document Number 155-507
April 5, 2012
Siemens Industry, Inc. Page 5
Manual Override
Automatic mode
When the motor drives the manual adjuster turns. In Automatic Mode, the manual
adjuster is used for indication of travel. If the manual adjuster is held firm in this mode,
there is no transmission of power to the gear train.
Manual operation
When pushing the manual adjuster down (1), it engages and the actuator can be
manually operated.
When turning the manual adjuster in a clockwise/counterclockwise direction (2), the
actuator’s stem extends/retracts.
An overload protection prevents damage to the manual adjuster.
Setting the position
When the black slide switch is pushed out, the manual adjuster remains engaged.
When in this mode, do not turn the manual adjuster.
Disengaging the setting
When the black slide switch is pushed back in, and the manual adjuster is not pressed
down, the manual adjuster returns to Automatic Mode.

Technical Instructions Flowrite™599 Series SAX Electronic Valve Actuator
Document Number 155-507 Non-spring Return, 24 Vac 3-position (Floating) Control
April 5, 2012
Page 6 Siemens Industry, Inc.
Mounting and
Installation
Indoor or Outdoor Use1
1) Only in connection with Weather Shield ASK39.1 for NEMA 3R protection.
Figure 2. Acceptable Mounting Positions.
The vertical position is the recommended position for mounting. Figure 2 shows the
acceptable mounting positions.
Allow 8 inches (200 mm) above and on the wiring side of the actuator, and four inches
(100 mm) on all other sides of the actuator. This service envelope is the minimum
space required to access and service the actuator. See Dimensions for actuator
dimensions and the recommended service envelope.
Start-Up Check the wiring for proper connections.
NOTE: The valve body assembly determines the complete assembly action.
Normally Closed Valve Y1 control signal extends the actuator (0 to 1): Valve opens.
Y2 control signal retracts the actuator (1 to 0): Valve closes.
Normally Open Valve Y1 control signal extends the actuator (0 to 1): Valve closes.
Y2 control signal retracts the actuator (1 to 0): Valve opens.
Three-Way Valve Y1 control signal extends the actuator (0 to 1): Valve opens between Ports A and AB
(through port).
Y2 control signal retracts the actuator (1 to 0): Valve opens between Ports B and AB
(bypass port)
Wiring Do not use auto transformers. Use earth ground isolating step-down Class 2 power
supplies.
Determine supply transformer rating by summing total VA of all actuators used.
The maximum rating for Class 2 step-down transformer is 100 VA. It is recommended
that no more than 10 actuators are powered by one transformer.

Flowrite™599 Series SAX Electronic Valve Actuator Technical Instructions
Non-spring Return, 24 Vac 3-position (Floating) Control Document Number 155-507
April 5, 2012
Siemens Industry, Inc. Page 7
Wiring Diagrams
EA0744R1
EARTH GROUND
ISOLATING CLASS 2
TRANSFORMER FOR
24 Vac POWER
120 Vac
Y2
Y1
G
NEUT
CONTROLLER
24
Vac
Figure 3.
Accessories
VE0357R1
AB
Y1 Y2
G
24 Vac
M
A and/or B
1x ASC10.51
Auxiliary Switch
1x ASC10.51
Auxiliary Switch
VE0356R1
S1
S2S3
24 Vac to 230V / 6 (3) A
VE0356R1
S1
S2S3
24 Vac to 230V / 6 (3) A
Figure 4. Wiring Designations.
or 1 x ASZ7.5/..
Potentiometer
VE0360R1
P1 P2 P3
SELV/PELV 1000 Ω
0 200 Ω
0 135 Ω
100%
0%
The diagram shows all possible connections. The application determines which
connections are used.
24 Vac/Vdc, 3-Position
System potential (SP)
Wiring Terminals
Positioning signal (actuator’s stem extends)
Positioning signal (actuator’s stem retracts)
Check that the wires are connected correctly and attached securely.
Troubleshooting
Check for adequate power supply.

Technical Instructions Flowrite™599 Series SAX Electronic Valve Actuator
Document Number 155-507 Non-spring Return, 24 Vac 3-position (Floating) Control
April 5, 2012
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as
design improvements are introduced. Flowrite is a registered trademark of Siemens Industry, Inc. Other product or company names mentioned
herein may be the trademarks of their respective owners. © 2012 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
USA
+ 1 847-215-1000
Your feedback is important to us. If you have
comments about this document, please send them
to [email protected]
Dimensions
Figure 5. Dimensions in Inches (Millimeters).
Minimum access space recommended
Service envelope
4 inch (100 mm) 8 inch (200 mm)
Product
Numbers
Document No. 155-507
Printed in the USA
Page 8
A B C C1 C2 D E

SAX81.03U 9.53
(242)
4.88
(124)
5.91
(150)
2.68
(68)
3.23
(82)
3.15
(80)
3.94
(100)
3.94
(100)
7.87
(200)
With ASK39.1 10.51
(267)
6.06
(154)
11.81
(300)
7.87
(200)
3.94
(100) – – – –