Siemens SAS61.33U Manuale del proprietario

Powermite 599

Technical Instructions

Document No. 155-682

January 19, 2016

MT Series SAS Electronic

Valve Actuator 24 Vac or 24 Vdc,

Proportional Control

SAS61.03U

SAS61.33U

Siemens Industry, Inc.

Description The Powermite 599 MT Series SAS Electronic Valve Actuator requires a 24 Vac or

24 Vdc supply and receives a 0 to 10 Vdc or a 4 to 20 mA control signal to proportionally

control a valve. This actuator is designed to work with Powermite 599 MT Series

terminal unit valve with a 7/32-inch (5.5 mm) stroke.

Features •Maintenance-free with reversible motor.

•Position indicator.

•UL listed for plenum installations.

•0 to 10V or 4 to 20 mA.

•LED status indicator.

•Auto calibration

•Position output signal 0 to 10 Vdc.

•Manual positioning knob with stroke indication allows for repositioning.

•Mechanical spring returns the valve to its normal (fail-safe) position in power-off

conditions (SAS61.33U Actuator only).

Application For use in small to medium HVAC installations with Powermite 599 Series terminal unit

valves with a 7/32-inch (5.5 mm) stroke requiring a minimum of 90 pounds force (400N).

They can be used in liquid and low pressure steam service applications.

Table 1. Ordering Information.

Product Numbers Product Number Actuator type Actuator Prefix Code

SAS61.03U Non-Spring Return (Fail-in-place) 364

SAS61.33U Spring Return (Fail-safe) 365

Ordering

Information To order a complete valve plus actuator assembly from the factory, combine the

actuator prefix code with the suffix of the valve product number. See TB 251 Powermite

599 Series MT Series Terminal Unit Valve and Actuator Assembly Selections Technical

Bulletin (155-306P25) for selection procedures.

To order an actuator only, use the product number in Table 1.

Technical Instructions Powermite 599 Series MT Series SAS Electronic Valve Actuator 24V Proportional Control

Document No. 155-682

January 19, 2016

Page 2Siemens Industry, Inc.

Specifications

Operating voltage 24 Vac ± 20%, 24 Vdc, + 20%, -15%

Frequency 45 to 65 Hz

Power supply Earth ground isolating, Class 2,

24V transformer, 100 VA max.

Power consumption - running

SAS61.03U 5.3 VA

SAS61.33U 5.9 VA

Power Requirements

Control Characteristics

Terminal

Designation

Y Control Signal 0 to 10 Vdc, 4 to 20 mA

Current draw ≤0.1 mA for 0 to 10 Vdc control

4 to 20 mA ± 1% for 4 to 20 mA control

Input impedance >100K ohms

U Position feedback

Voltage 0 to 10 Vdc ± 1%

Load impedence >10K Ωres.

Current load 1 mA max.

Z Forced control

Resistance 0 to 1000Ω, stroke proportional to R

Z connected to G Max. stroke 100%

Z connected to G0 Min. stroke 0%

Voltage Max. 24 Vac to 20%,

Max 24 Vdc+20%,-15%

Current draw ≤0.1 mA

Functional Operation

Running time

at 60 Hz 30 seconds

Spring return (SAS61.33U only) <14 seconds

Nominal stroke 7/32-inch (5.5 mm)

Nominal Force 90 lbs. (400N)

Spring return (SAS61.33U only) Mechanical spring

Agency Approvals

UL UL873

cUL Certified to CSA C22.2 No. 24-93

Environmental

Conditions

Ambient temperature

Operation 23°F to 131°F (–5°C to 55°C)

Transport and storage –13°F to 158°F (–25°C to 70°C)

Humidity <95% rh

Max. permissible media temperature in valve 34°F to 248°F (1°C to 120°C)

Physical Characteristics

Conduit opening Knockouts for standard 1/2-inch

conduit connector

Weight

SAS61.03U 0.9 lbs. (0.4 kg)

SAS61.33U 1.5 lbs. (0.68 kg)

Dimensions See Figure 4 and Figure 5.

Powermite 599 Series MT Series SAS Electronic Valve Actuator 24V Proportional Control Technical Instruction

Document No. 155-682

January 19, 2016

Siemens Industry, Inc. Page 3

Accessory

Auxiliary Switch ASC10.51 switches on or off when a certain

position is reached. The switching point can lie between 0 to 100%.

Service Kit If the actuator is inoperative, replace the unit.

Operation A zero voltage control signal returns the valve to its normal position.

In the event of a power failure:

•SAS61.03U is non-spring return and holds its last position.

•SAS61.33U returns the valve to its normal spring return position.

The position output 0 to 10 Vdc signal “U” produces position feedback to the controller.

Mounting and

Installation

Figure 1. Acceptable Mounting Positions.

Mount the actuator in any position except with the actuator lower than the valve.

Figure 1 shows acceptable actuator mounting positions for water applications. The

recommended mounting position of the actuator for low pressure steam applications is

between 45° and horizontal.

Wiring •All units using the same control signal must utilize the same neutral reference (G0).

•Use earth ground isolating, step-down Class 2 transformers. Do not use auto

transformers.

•Determine supply transformer minimum rating by summing the total equipment on

circuit. The maximum rating for Class 2 step-down transformers is 100 VA.

•Do not power more than 10 actuators with one transformer.

WARNING:

Housing rated for flex conduit only.

Technical Instructions Powermite 599 Series MT Series SAS Electronic Valve Actuator 24V Proportional Control

Document No. 155-682

January 19, 2016

Page 4Siemens Industry, Inc.

Wiring Diagrams

G0 Neutral (-)

G Hot (+)

Y Positioning signal for 0 to 10 Vdc/4 to 20 mA

M Measuring neutral

U Position feedback 0 to 10 Vdc

Z Positioning signal forced control AC/DC ≤24V,

0 to 1000 Ω

Figure 2. Terminal Connections.

WARNING:

Terminal connection G is 24 Vac HOT, not ground.

CAUTION:

G0 and G must be properly wired for correct function and full life of the

actuator.

Figure 3. Wiring Diagram.

The diagram shows all possible connections. The application determines which

connections are used.

Start-up The valve body (normally open or normally closed) determines the action of the

complete valve/actuator assembly.

Troubleshooting •Check wiring for proper connections and secure attachments.

•Check for adequate power supply.

Powermite 599 Series MT Series SAS Electronic Valve Actuator 24V Proportional Control Technical Instruction

Document No. 155-682

January 19, 2016

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. Product or company names mentioned herein may be the trademarks of their respective owners.

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

sbt_technical.editor.us.sbt@siemens.com

Document No. 155-682

Printed in the USA

Page 5

Dimensions

►

►►

Inches

5.9

3.1

0.9

2.8

1.2

0.9

151

21.9

71.1

29.9

21.8

100

200

Figure 4. SAS61.03U Actuator Dimensions.

►

►►

Inches

5.9

3.1

0.9

3.3

1.2

0.9

151

21.9

84.6

29.9

21.8

100

200

Figure 5. SAS61.33U Actuator Dimensions.

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