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Siemens SQX82 Series User Manual

Siemens SQX82 Series
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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
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Siemens SQX82 Series Specifications

General IconGeneral
BrandSiemens
ModelSQX82 Series
CategoryController
LanguageEnglish

Summary

Product Information

Description

Overview of the Flowrite 599 Series SAX Electronic Valve Actuator.

Features

Key characteristics and capabilities of the SAX actuator.

Application

Recommended uses for SAX actuators in HVAC systems.

Product Number

Identifies the specific SAX actuator model number.

Product Replacements

Guidance on replacing older SQX actuators with SAX models.

Technical Specifications

Power Supply

Details on operating voltage, frequency, and power consumption.

Function Data

Information on positioning times, force, stroke, and temperature limits.

Signal Inputs

Specifications for control signals and voltage inputs.

Connecting Cable

Wire gauge and cable entry requirements.

Degree of Protection

Enclosure ratings (IP54, NEMA 3R) for environmental resistance.

Environmental Conditions

Operating, transportation, and storage temperature/humidity ranges.

Environmental Compatibility

Compliance with environmental and quality standards.

Standards Compliance

Certifications and adherence to safety and regulatory standards.

Accessories

Potentiometer Specifications

Details for available potentiometer accessories (135, 200, 1000 Ohm).

Auxiliary Switch ASC10.51

Specifications for the ASC10.51 auxiliary switch.

Stem Heating Element ASZ6.6

Specifications for the ASZ6.6 stem heating element.

Components and Operation

Actuator Components

Identification of key parts of the SAX actuator.

3-Position Actuator Operation

How Y1/Y2 signals control stem movement and power failure behavior.

Manual Override Functions

Automatic Mode

Role of the manual adjuster in Automatic Mode.

Manual Operation

How to engage and operate the actuator manually.

Setting the Position

Procedure for setting actuator position manually.

Disengaging Manual Setting

How to return to Automatic Mode from manual operation.

Mounting and Installation

Mounting Positions

Guidance on acceptable mounting positions (indoor/outdoor).

Start-Up Procedures

Steps for checking wiring and preparing for operation.

Valve Configuration Operation

Operation details for NC, NO, and Three-Way valves.

Wiring Guidelines

Transformer usage and wiring best practices.

Wiring and Troubleshooting

Wiring Diagrams and Designations

Diagrams and terminal designations for actuator wiring.

Troubleshooting Checks

Basic checks for wiring connections and power supply.

Dimensions and Service

Actuator Dimensions

Physical dimensions (A-E) of the actuator and with ASK39.1.

Service Envelope

Minimum recommended space for actuator access and servicing.

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