Siemens SAS61.03U User manual

Installation Instructions

Document No. 129-612

January 19, 2016

SAS61 Series Electronic Valve Actuators

Item Number: 129-612, Rev. AA Page 1 of 3

Product Description

The SAS actuators require a 24 Vac or 24 Vdc, Class

2, supply and a 0 to 10 Vdc or 4 to 20 mA signal to

control Powermite 599 Series terminal unit valves with

7/32-inch (5.5 mm) stroke. In the SAS61.33U, a

mechanical spring returns the valve to its normal

position when there is no power supply.

Warning/Caution Notations

WARNING: Personal injury/loss of life may

occur if you do not perform a

procedure as specified.

CAUTION: Equipment damage, or loss of

data may occur if you do not

follow the procedures as

specified.

Product Numbers

SAS61.03U – Non-spring Return (Fail-in-place)

actuator

SAS61.33U – Spring Return (Fail-safe) actuator

Required Tools

•#2 Phillips or flat-blade screwdriver

•Flat blade calibration screwdriver (3 mm) for

wiring connections

•Wire cutter/stripper

Estimated Installation Time

•12 minutes for wiring a factory-installed

actuator.

•30 minutes for field replacement of an

actuator.

Prerequisites

WARNING:

Disconnect the controller power before

replacing the actuator.

WARNING:

If mounting the actuator to a valve

already in line, either close the shut-off

valves in the piping (upstream first,

then downstream) or switch off the

pump to allow the differential pressure

in the valve to drop.

Mounting

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.

Figure 1. Acceptable Mounting Positions.

Installation

If you are mounting an actuator on a new valve, begin

with the instructions, Mounting an Actuator to a Valve.

Remove Actuator from Valve

1. Remove actuator cover screws using either a

No. 2 Phillips or a No. 2 flat-blade screwdriver and

detach actuator cover.

2. Identify and disconnect wires.

3. Replace actuator cover. Use cover screws to

secure actuator cover in place.

4. Loosen coupling piece.

5. Remove actuator from valve.

Document No: 129-612

Installation Instructions

January 19, 2016

Page 2 of 3Siemens Industry, Inc.

Mounting an Actuator to a Valve

1. If you are attaching the actuator to a new valve,

remove the protective plastic cap from the valve

stem.

2. On the SAS61.03U Actuator, turn the manual-

positioning knob counterclockwise to its end

point.

3. Place the actuator on the valve.

4. Hand-tighten the coupling piece.

5. Use either a Phillips head screwdriver or a flat-

blade screwdriver to remove the actuator cover

for access to the terminal block.

6. Attach wires. See Wiring and Start-Up.

7. Place the cover on the actuator.

8. Fasten the cover with the screws.

Wiring

All wiring must conform to NEC and local codes and

regulations.

Use earth ground isolating, step-down Class 2

transformers. Do not use auto transformers.

Determine the supply transformer rating by adding the

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 be

1. Remove actuator cover screws using either a

No. 2 Phillips or a No. 2 flat-blade screwdriver

and detach actuator cover.

2. Access terminal block and attach wires per

Figure 2.

3. Replace actuator cover. Use cover screws to

secure actuator cover in place.

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.

CAUTIONS:

•G0 and G must be properly wired for

correct function and full life of the

actuator.

•If the actuator makes a buzzing noise

upon reaching setpoint, G and G0 are

improperly wired and should be

reversed.

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.

References

Powermite 599 MT Series SAS Electronic Valve

Actuators, 24 Vac or 24 Vdc, Proportional Control

Technical Instructions(155-682).

Document No: 129-612

Installation Instructions

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

Siemens Industry, Inc.

Building Technologies Division

1000 Deerfield Parkway

Buffalo Grove, IL 60089-4513

USA

Tel. +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. 129-612

Printed in the USA

Page 3 of 3

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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