Siemens Flowrite 599 Series Manuale del proprietario

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

NEUT

CONTROLLER

Vac

Figure 3.

Accessories

VE0357R1

Y1 Y2

24 Vac

A and/or B

1x ASC10.51

Auxiliary Switch

1x ASC10.51

Auxiliary Switch

VE0356R1

S2S3

24 Vac to 230V / 6 (3) A

VE0356R1

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%

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

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) – – – –

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