Data Sheet for Product

ManualsBrandsSiemens ManualsLarge Stroke (BC1)Flowrite 599 Series 2-way Valves 1/2 to 2-Inch Bronze Body, Technical Instructions

Technical Instructions

Document No. 155-507

June 15, 2016

SAX Electronic Valve Actuator

Non-spring Return, 24 Vac,

3-Position Control

Siemens Industry, Inc.

Description

The SAX Non-spring Return (NSR), Electronic Valve Actuator requires a 24 Vac supply

to provide three-position control of a valve. This actuator is designed to work with

Flowrite 599 Series 2-way and 3-way valves or Siemens flanged, Pressure Independent

Control Valves with a 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 low pressure (<15 psi) steam

service applications, or with Siemens flanged, Pressure Independent Control valves with

3/4-inch (20 mm) stroke in hot and chilled water applications in closed loop HVAC

systems.

NOTE: Consult Technical Support if using with a TEC.

Product Number

SAX81.03U (Actuator Prefix Code 373)

Summary of content (8 pages)

PAGE 1
Technical Instructions Document No. 155-507 June 15, 2016 SAX Electronic Valve Actuator Non-spring Return, 24 Vac, 3-Position Control Description The SAX Non-spring Return (NSR), Electronic Valve Actuator requires a 24 Vac supply to provide three-position control of a valve. This actuator is designed to work with Flowrite 599 Series 2-way and 3-way valves or Siemens flanged, Pressure Independent Control Valves with a 3/4-inch (20 mm) stroke.
PAGE 2
Technical Instructions Document Number 155-507 June 15, 2016 SAX Electronic Valve Actuator Non-spring Return, 24 Vac 3-position (Floating) Control Specifications Operating voltage Power supply Frequency Fusing of supply lines Power consumption Stem retracts/extends Function data Positioning times Positioning force Nominal stroke Permissible medium temperature (valve fitted) 30 s 800 N 20 mm -13°F to 266°F (-25°C to 130°C) Signal inputs Positioning signals "Y1", “Y2” Voltage 3-position 24 Vac ± 20
PAGE 3
SAX Electronic Valve Actuator Non-spring Return, 24 Vac 3-position (Floating) Control Technical Instructions Document Number 155-507 June 15, 2016 Specifications (Continued) Potentiometer ASZ7.5/135 Voltage Current rating 0 to 135 Ω + 5% 10 Vdc <4 mA Accessories Potentiometer ASZ7.5/200 Voltage Current rating 0 to 200 Ω + 5% 10 Vdc <4 mA Potentiometer ASZ7.5/1000 Voltage Current rating 0 to 1,000 Ω + 5% 10 Vdc <4 mA Auxiliary switch ASC10.51 Switching capacity 24 to 230 Vac, 6A res., 2A Ind.
PAGE 4
Technical Instructions Document Number 155-507 June 15, 2016 SAX Electronic Valve Actuator Non-spring Return, 24 Vac 3-position (Floating) Control Components Operation 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 The actuator accepts a 24 Vac control signal to Y1, which causes the actuator’s stem retainer to move toward the valve (extend).
PAGE 5
SAX Electronic Valve Actuator Non-spring Return, 24 Vac 3-position (Floating) Control Technical Instructions Document Number 155-507 June 15, 2016 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.
PAGE 6
Technical Instructions Document Number 155-507 June 15, 2016 SAX Electronic Valve Actuator Non-spring Return, 24 Vac 3-position (Floating) Control Mounting and Installation 1 Indoor Use Outdoor Use 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.
PAGE 7
SAX Electronic Valve Actuator Non-spring Return, 24 Vac 3-position (Floating) Control Technical Instructions Document Number 155-507 June 15, 2016 Wiring Diagrams Figure 3. Accessories A and/or 1x ASC10.51 Auxiliary Switch B 1x ASC10.51 Auxiliary Switch Figure 4. Wiring Designations. or 1 x ASZ7.5/.. Potentiometer The diagram shows all possible connections. The application determines which connections are used.
PAGE 8
Technical Instructions Document Number 155-507 June 15, 2016 SAX Electronic Valve Actuator Non-spring Return, 24 Vac 3-position (Floating) Control Dimensions Figure 5. Dimensions in Inches (Millimeters). Service envelope Minimum access space recommended 4 inch (100 mm) Product Numbers SAX81.03U With ASK39.1 8 inch (200 mm) A B C C1 C2 D E ► ►► Weight lbs (kg) 9.53 (242) 10.51 (267) 4.88 (124) 6.06 (154) 5.91 (150) 11.81 (300) 2.68 (68) 7.87 (200) 3.23 (82) 3.94 (100) 3.15 (80) 3.