Siemens OpenAir GEB141.1P Manuale del proprietario

OpenAir™

Technical Instructions

Document No. A6V12029156

December 16, 2021

GEB Series Enhanced Rotary

Non-spring Return Damper Actuators

Siemens Industry, Inc.

Description

The OpenAir direct-coupled, 24 Vac/Vdc, non-spring return electronic actuator

is designed for modulating and combined on/off and floating control of building

HVAC dampers.

Features

•Brushless motor technology with stall protection

•Unique self-centering shaft coupling

•Manual override

•177 lb-in (20 Nm) torque

•5° preload as shipped from factory

•Mechanical adjustable span between 0 and 90 degrees

•Operating voltage 24 Vac/Vdc; or 100 to 240 Vac

•Models with independently adjustable, dual auxiliary switches available

•Built-in 1/2-inch conduit connection

•UL and cUL listed, CE certified

Application

Used in constant or variable air volume installations for the control of HVAC dampers

requiring up to 177 lb-in (20 Nm) torque.

Warning/Caution Notations

WARNING:

Personal injury or loss of life may occur if you do not follow a

procedure as specified.

CAUTION:

Equipment damage may occur if you do not follow a

procedure as specified.

Technical Instructions OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators

Document Number A6V12029156

December 16, 2021

Page 2 Siemens Industry, Inc.

Product Numbers

Table 1.

Product

Number

Operating

Voltage

Control

Cable

Built-in Control

Options

24 Vac/Vdc ±20%

100 to 240 Vac

Modulating (0 to 10 Vdc)

On/Off & Floating

Plenum

Standard

Position Feedback

Feedback Potentiometer

Dual Auxiliary Switches

Offset and Span

Input Signal Selectable

0 –10 Vdc or 2-10 Vdc

GEB141.1P

●

–

●

–

GEB141.1U

●

–

●

–

●

–

GEB142.1U

●

–

●

–

●

–

●

–

GEB146.1U

●

–

●

–

●

–

●

–

GEB161.1P

●

–

●

–

●

–

●

–

●

GEB161.1U

●

–

●

–

●

–

●

GEB164.1U

●

–

●

–

●

–

●

GEB166.1U

●

–

●

–

●

–

●

–

●

GEB341.1U

–

●

–

●

–

GEB361.1U

–

●

–

●

–

●

Specifications

Power Supply

Operating voltage 24 Vac 20%; 24 Vdc 20%

100 to 240 Vac 10%

Frequency 50/60 Hz

Power consumption

Running: Holding:

GEB14x 2.3 VA/1.1W 0.5 W

GEB16x 2.5 VA/1.2W 0.65 W

GEB 34x 4 VA/1.6W 0.9W

GEB36x 3.4 VA/1.3W 0.6W

Equipment rating Class 2, in accordance with UL/CSA

Class III per EN 60730

Control Signal

Input signal (wires 8-2) GEB16x

Voltage-input 0 (2) to 10 Vdc (max. 35 Vdc)

Input resistance >100K ohms

Feedback signal

Position output signal (wires 9-2) GEB16x

Voltage-output 0 to 10 Vdc

Maximum output current 1 mA

Function

Running torque 177 lb-in (20 Nm)

Maximum torque 310 lb-in (35 Nm)

Nominal runtime for 90° opening or closing 150 seconds

Nominal angle of rotation 90°

Maximum angular rotation 95° +/- 2°

OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators Technical Instructions

Document Number A6V12029156

December 16, 2021

Siemens Industry, Inc. Page 3

Mounting

Shaft size 1/4 to 3/4-inch (6.4 to 20.5 mm) dia.

1/4 to 1/2-inch (6.4 to 13 mm) square

Minimum shaft length 3/4-inch (20 mm)

Housing

Enclosure NEMA 1

IP54 according to EN 60 529

Material Die cast aluminum alloy

Gear lubrication Silicone free

Ambient conditions

Ambient temperature

Operation -25°F to 130°F (-32°C to 55°C)

Storage and transport -40°F to 158°F (-40°C to 70°C)

Ambient humidity (non-condensing) 95% rh

Agency certification

UL UL60730

cUL CAN/CSA E60730

Conformity

Low voltage directive 2006/95/EC

Product safety: Automatic electrical controls EN 60 730-2-14

for household and similar use (Type 1)

Electromagnetic compatibility (EMC) 2004/108/EC

Emissions for all models EN61000-6-3

Auxiliary features

Control signal adjustment

Offset (start point) Between 0 to 5 Vdc

Span Between 2 to 30 Vdc

Dual auxiliary switches

AC rating 24 to 250 Vac

AC 6A resistive,

AC 2A general purpose

DC rating 12 to 30 Vdc

DC 2A

Switch Range

Switch A 0 to 90° with 5° intervals

Recommended range usage 0 to 45°

Factory setting 5°

Switch B 0 to 90° with 5° intervals

Recommended range usage 45 to 90°

Factory setting 85°

Switching hysteresis 2°

Feedback potentiometer (GEB 142.1U) 0 to 1000 ohm <10 mA

Voltage UL/cUL-Class 2 (SELV/PELV for CE)

Technical Instructions OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators

Document Number A6V12029156

December 16, 2021

Page 4 Siemens Industry, Inc.

Auxiliary features,

Continued

WARNING:

Apply only AC line voltage or only UL-Class 2 voltage (SELV for CE conformance) to

the switching outputs of both auxiliary switches A and B. Mixed operation is not

permissible. See Wiring for details.

NOTE: With plenum cables, only UL-Class 2 (SELV for CE) is permitted).

Miscellaneous

Pre-cabled connection 18 AWG

Cable length 3 feet (0.9m) length

Life cycle Designed for 100,000 full stroke cycles

at rated torque and temperature

Dimensions: Inches (mm) 7.56 H 3.23 W 2.36 D

(192 H 82 W 60 D)

Weight Non-Switch Models: 2.4 lbs. (1 kg)

Switch Models: 2.9 lbs. (1.3 kg)

Country of Origin USA

Actuator

Components

Figure 1. Non-Spring Return Actuator

Components.

Legend

1. Actuator housing

2. Positioning scale for angle of

rotation

3. DIP switches and cover

4. Span adjustment

5. Offset (start point) adjustment

6. Mounting bracket

7. Connection cable for power

and control signals

8. Connection cable for auxiliary

switches or feedback

potentiometer

9. Manual override

10. Auxiliary switches A & B

11. Position indicator

12. Self centering shaft adapter

13. 1/2-inch NSPT conduit

connection

14. Shaft adapter locking clip

15. Position indicator adapter

OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators Technical Instructions

Document Number A6V12029156

December 16, 2021

Siemens Industry, Inc. Page 5

Accessories

NOTE: The auxiliary switches, control signal adjustment, and feedback potentiometer

cannot be added in the field. Order the product number that includes the option(s).

4614Z19

Figure 2. Floor /Frame Mount Kit.

ASK71.11: For in-the-air-stream

applications: Anywhere a foot-mounted

actuator can be mounted. Can also be

directly mounted to a damper frame with

louvers and vents and in applications where

use of the floor mount is not possible.

Kit contains:

•Crank arm to change the angular

rotation into a linear stroke.

•Support bearing ring to minimize side

loading on the actuator’s output

bearing.

•Mounting bracket.

•Required mounting fasteners.

4614Z16

Figure 3. Rotary to Linear Crank Arm Kit.

ASK71.13: Allows a direct-coupled actuator

to provide an auxiliary linear drive. Can be

used to simultaneously drive a set of

opposing or adjacent dampers with a single

actuator.

Kit contains:

•Crank arm to attach to the splined

hub of the shaft adapter.

•Mounting fasteners.

4614Z18

Figure 4. Rotary to Linear Crank Arm Kit

with Mounting Bracket.

ASK71.14: Allows economical mounting of

an OpenAir actuator to a variety of surfaces.

Should be used in applications where the

actuator can be rigid-surface mounted and a

linear stroke output is required.

Kit contains:

•Crank arm to attach to the splined

hub of the shaft adapter.

•Mounting bracket.

•Required mounting fasteners.

Figure 5. NEMA 3RWeather Shield.

ASK75.3U: GEB actuators are UL listed to

meet NEMA 3R requirements (a degree of

protection against rain, sleet, snow, and

damage from external ice formation) when

installed with ASK75.3U Weather Shield and

outdoor-rated conduit fittings in the vertical

position.

Technical Instructions OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators

Document Number A6V12029156

December 16, 2021

Page 6 Siemens Industry, Inc.

Figure 6. NEMA Type 4X

Weather Shield.

ASK75.7U: GEB Actuators are UL listed to

meet NEMA Type 4X requirements (a degree

of protection against falling dirt, rain, sleet,

snow, windblown dust, splashing water, hose-

directed water, corrosion, and damage from

external ice formation) when installed with an

ASK75.7U Weather Shield and outdoor-rated

conduit fittings. This weather shield may be

mounted in any orientation.

For dimensions, see Figure 22.

Service Parts

985-094P10

Position indicators (10/pkg.)

985-092

Anti-rotation (mounting) bracket.

Figure 7. Miscellaneous Service Parts.

Operation

GEB16x

Apply a 0 (2) to 10 Vdc control signal between wire 8 (Y) and wire 2 (G0) to operate the

damper actuator. The angle of rotation is proportional to the control signal. A 0 to 10 Vdc

position feedback output signal is available between wire 9 (U) and wire 2 (G0) to monitor the

position of the damper motor.

In the event of a power failure, the actuator holds its position. In the event that only the control

signal is lost, the actuator returns to the "0" position.

GEB14x

A floating control signal controls the damper actuator. The actuator’s angle of rotation is

proportional to the length of time the signal is applied. A 24 Vac control signal to wire 6 (Y1)

causes the actuator coupling to rotate clockwise. A 24 Vac control signal to wire 7 (Y2)

causes the actuator coupling to rotate counterclockwise.

To reverse the direction of rotation, wires 6 (Y1) and 7 (Y2) can be interchanged.

With no control voltage, the damper actuator holds its position.

Overload protection

In the event of a blockage in the damper, the actuator is overload protected over the full range

to prevent damage to the actuator.

Life expectancy

An improperly tuned loop will cause excessive repositioning that will shorten the life of the

actuator.

OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators Technical Instructions

Document Number A6V12029156

December 16, 2021

Siemens Industry, Inc. Page 7

Sizing

The type of actuator required depends on several factors:

1. Obtain damper torque ratings (ft-lb/ft2or Nm/m2) from the damper manufacturer.

2. Determine the area of the damper.

3. Calculate the total torque required to move the damper:

Total Torque =

SF AreaDamperRatingTorque 1



1 Safety Factor: When calculating the total torque required, a safety factor should be included

for unaccountable variables such as slight misalignments, aging of the damper, and so on. A

suggested safety factor is 0.80.

Mounting and

Installation

•Place the actuator on the damper shaft so that the front of the actuator is accessible.

(The label and the manual override button are on the front side.)

•The minimum damper drive shaft is 3/4-inches (20mm). The shaft length determines

whether the shaft adapter will be mounted on the front or back of the actuator.

•See Specifications for minimum and maximum damper shaft dimensions.

•Set auxiliary switches, DIP switches, and Offset/Span as required by your

application. (See following sections for details.)

•The position indicator can be mounted to show either the clockwise or

counterclockwise 0 to 90 scale.

•A mounting bracket is included with the actuator.

•The shaft adapter and mounting parts are shipped in a separate container with the

actuator.

•The actuator is shipped from the factory with a 5° pre-load to ensure tight damper

close off.

•Detailed mounting instructions are included with each actuator.

Manual Override

To move the damper blades

and lock the position without

power present:

1. Hold down the PUSH

button.

2. Make adjustments to the

damper position.

3. Release the PUSH button.

Once power is restored, the

actuator returns to automated

control.

Figure 8. Manual Override.

Technical Instructions OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators

Document Number A6V12029156

December 16, 2021

Page 8 Siemens Industry, Inc.

Mechanical Range

Adjustment

The angular rotation is adjustable between 0

and 90° at 5-degree intervals. The range of

shaft movement is limited by mounting the shaft

adapter:

1. Loosen the shaft adapter from the damper

shaft and remove the actuator from the

damper shaft.

2. Remove the clip and shaft adapter from the

actuator.

Figure 9.

Figure 10.

Figure 11

Figure 12.

3. Return the actuator gear train to the 0position using the steps that follow for the

clockwise or counterclockwise damper shaft rotation.

Clockwise to open:

a. Insert the shaft adapter to the right as close as possible to the raised stop. See

Figure 10.

b. Hold down the PUSH button and rotate the shaft adapter to the left until it stops.

See Figure 11.

c. Release the PUSH button.

d. If the shaft adapter is not resting against the left raised stop, remove the adapter

and insert it against the left stop.

e. Place the position indicator to the 0position on the outside scale.

See Figure 12.

Counterclockwise to open:

a. Insert the shaft adapter to the left as close as possible to the raised stop.

b. Hold down the PUSH button and rotate the shaft adapter to the right until it

stops.

c. Release the PUSH button.

d. If the shaft adapter is not resting against the right raised stop, remove the

adapter and insert it against the right stop.

e. Place the position indicator to 0on the inside scale.

4. Determine the angle of rotation for the damper blade shaft. Subtract that amount

from 90°.

5. Remove the shaft adapter and insert it with the position indicator pointing to the mark

on the scale calculated in the previous step. See Figure 12.

6. Attach the clip.

7. Rotate the damper blade shaft to its 0position.

8. Return the actuator to the damper shaft and tighten the shaft adapter to the damper

shaft.

OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators Technical Instructions

Document Number A6V12029156

December 16, 2021

Siemens Industry, Inc. Page 9

Control signal

adjustment

GEB164.1U

(Offset and Span)

The offset (start point) and span of the control signal can be adjusted. The offset, Uo, can

be adjusted between 0 to 5 Vdc. The span, U, can be adjusted between 2 to 30 Vdc.

Ys Mechanical positioning range (100% = angle of rotation 90°)

Yu Control signal

Uo Offset (start point)

U Span

NOTE: When the mechanical limitation of the angle of rotation and

self-adaptive function are ON, 100% does not equal 90°.

1. Uo = 0V, U = 2V: The minimum working range for

Ys = 100%

2. Uo = 5V, U = 30V: The maximum working range for

Ys = 100%

3. Uo = 0V, U = 30V: Factory setting

Factory setting:

30V span

0 offset

Figure 13. The Minimum and Maximum Control Signal Adjustment.

Example:

Open the actuator from 0 to 50% (45°) using a control signal of:

Umin= 2V to Umax= 10V.

Calculating the valve of U:

V16

50 2)(10x100

%inrotationofangleWorking min)Umax(U%][100

−

=

Technical Instructions OpenAir GEB Series Enhanced Rotary Non-Spring Return Damper Actuators

Document Number A6V12029156

December 16, 2021

Page 10 Siemens Industry, Inc.

Control Signal

Adjustment,

Continued

Uo = 2; U = 16V

Umin = minimum control signal

Umax = maximum control signal

Figure 14. Example.

Dual auxiliary switch

GEB164.1U,

GEB146.1U

←Actuator scale: Clockwise

Adjustment range for switches A and B:

Setting interval: 5°

Switching hysteresis: 2°

←Actuator Scale: counterclockwise

To change the settings of A and B:

NOTE: The scale is only valid when the

actuator is in the 0position on

clockwise motion.

•Use the adjustment tool provided

with the actuator to turn the

switch adjustment dials to the

desired signal setting.

Factory setting:

Switch A 5°

Switch B 85°

Figure 15. Dual Auxiliary Switch Dials.

NOTE: Use the long arm of the "†" to point to the position of switch A. Use the

narrower tab on the red ring to point to the position of switch B.

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