Siemens SQX82 Series, Flowrite 599 Series, SQX82.00U, SQX82.03U Technical Instructions

Technical Instructions

Flowrite™ 599 Series
SAX Electronic Valve Actuator

Non-spring Return, 24 Vac,
3-Position Control

Document No. 155-507

April 5, 2012

Description

Features

Application

Product Number
Product

Replacements

Stroke Actuators SQX…
to SAX…

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.

• 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

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.

SAX81.03U (Actuator Code 373)

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

Siemens Industry, Inc.

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

Specifications

Power supply

Operating voltage 24 Vac
Class 2

Frequency 45 to 65 Hz

+ 20% / 24 Vdc + 20% / -15%,

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

Page 2 Siemens Industry, Inc.

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

Specifications
(Continued)

Accessories

Potentiometer ASZ7.5/135 0 to 135 
Voltage 10 Vdc
Current rating <4 mA

Potentiometer ASZ7.5/200 0 to 200  + 5%

+ 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

Product Number

1) Available with 135 , 200 , or 1000 .

Auxiliary switch
ASC10.51

Potentiometer
ASZ7.5/..

Stem Heating Element
ASZ6.6

NOTE: Installation instructions are included with each accessory.

SAX81.03U

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/.. (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 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.

Auxiliary

Switch

ASC10.51

Potentiometer

ASZ7.5/..

1)

Stem Heating

Element

ASZ6.6

Max. 2 Max. 1 Max. 1

Weather shield
ASK39.1

Weather Shield ASK39.1 protects the actuator when installed outdoors. Provides NEMA
3R protection.

Siemens Industry, Inc. Page 3