Siemens OpenAir GBB161.1U Owner's manual

Siemens Industry, Inc.

Technical Instructions

Document No. 155-176P25

EA GBB/GIB-1

June 22, 2015

OpenAir™ GBB/GIBSeries

Electronic Damper Actuators

Non-Spring Return, 24 Vac, Modulating Control

Description The OpenAir, non-spring return (NSR), 24 Vac, rotary, direct-coupled, electric actuator

is designed for modulating control of building HVAC dampers.

Features •Built-in feedback on modulating units

•Unique self-centering shaft coupling

•All metal housing

•Two torque ranges available

•Manual override

•Offset and span adjustment models available

•Independently adjustable dual auxiliary switches available

•UL, cUL and CE listed

Product Numbers Table 1.

24 Vac Operating Voltage

Torque Input

Signal Cabling Standard Span/Off

set

Adjustable

Dual Auxiliary

Switches and

Span/Offset

Adjustable

Dual Auxiliary

Switches only

221 lb-in

(25 Nm) 0 to 10 Vdc

Standard

GBB161.1U

GBB163.1U

GBB164.1U

GBB166.1U

Plenum Cable

GBB161.1P

GBB163.1P

GBB164.1P

GBB166.1P

310 lb-in

(35 Nm) 0 to 10 Vdc

Standard

GIB161.1U

GIB163.1U

GIB164.1U

GIB166.1U

Plenum Cable

GIB161.1P

GIB163.1P

GIB164.1P

GIB166.1P

Application These actuators are used in constant or variable air volume installations for the control of supply

return air, mixed air, exhaust, rooftop units, and face and bypass dampers requiring up to 221 lb-in

(25 Nm) torque or 310 lb-in (35 Nm) torque.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control

Document Number 155-176P25

June 22, 2015

Page 2 Siemens Industry, Inc.

Warning/Caution Notations

WARNING:

Personal injury/loss of life may occur if you do perform a procedure as

specified.

CAUTION:

Equipment damage or loss of data may occur if you do not perform a

procedure as specified.

Specifications

Power supply

Operating voltage (G–G0) 24 Vac ±20%

Frequency 50/60 Hz

Power consumption

Running… 8 VA, 8W

Holding… 1.1W

For one tandem application 12 VA

of two actuators

Control Signal

Input signal (Y–G0)

voltage-input 0 to 10 Vdc

Input resistance >100K ohms

Feedback Signal

Position output signal (U–G0)

Voltage-output 0 to 10 Vdc

Maximum output current DC 1 mA

Equipment Rating

Operating voltage, input signal and Class 2, in accordance with UL/CSA

position output signal

Plenum type actuators as a whole device Class 2, in accordance with UL/CSA

Auxiliary Features

Dual auxiliary switches

AC rating (standard cable) 24 to 250 Vac

AC 6A resistive

AC 2A general purpose

AC rating (Plenum cable) 24 Vac

AC 4A resistive

AC 2A general purpose

DC rating (Standard/Plenum cable) 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°

WARNING:

Apply only AC-line voltage from the same phase 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.

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

permissible).

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions

Document Number 155-176P25

June 22, 2015

Siemens Industry, Inc. Page 3

Specifications,

Continued

Function

Torque

GBB… 221 lb-in (25 Nm)

GIB… 310 lb-in (35 Nm)

Runtime for 90° opening or closing 125 seconds at 60 Hz

150 seconds at 50 Hz

Nominal angle of rotation 90°

Maximum angular rotation 95°

Noise level <45 dBA

Mounting

Shaft size 3/8 to 1-inch (8 to 25.6 mm) diameter

1/4 to 5/8-inch (6 to 18 mm) square

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

Housing

Enclosure NEMA 2 in vertical position to 90°

to the left and right of vertical

See Figure 18

NEMA 3R rated when installed with

ASK75.1U Weather Shield in the

vertical position. See Accessories.

IP54 according to EN60529

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 Approvals

UL listed to UL873

cUL certified to Canadian Standard

C22.2 No. 24-93

CE conformity:

Electromagnetic compatibility 2004/108/EC

Low-voltage directive 2006/95/EC

Miscellaneous

Pre-cabled connection 18 AWG

Cable length 3 feet (0.9m)

Life cycle Designed for over 60,000 full strokes

and a minimum of 1.5 million

repositions at rated torque and

temperature

Dimensions See Figure 30

Weight 4.4 lbs (2 kg)

Country of Origin USA

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control

Document Number 155-176P25

June 22, 2015

Page 4 Siemens Industry, Inc.

Accessories NOTE: Neither the control signal adjustments nor the auxiliary switches can be

added in the field. Order the product numbers that include these options.

Figure 1. Floor Mount Kit.

ASK71.1U:

Kit allows foot mounting of

the OpenAir actuators. Kit should be used

for in

-the-air stream applications, and

anywhere a foot

mounted actuator can be

mounted. Kit contains:

•Crank arm that changes the angula

rotation into a linear stroke

•Support bearing ring to minimize

side loading on the actuator’s output

bearing

•Mounting bracket

•Required mounting fasteners

Figure 2. Frame Mount Kit.

ASK71.2U:

Kit allows mounting of

OpenAir a

ctuators directly to a damper

frame. Kit should be used with louvers

and vents and in applications where use

of the floor mount kit is not possible.

Kit contains:

•Crank arm that changes 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

Figure 3. Crank Arm Kit.

ASK71.3: Kit allows a direct-coupled

actuator to provide an auxiliary linear

drive. Crank arm kit can be

used to

simultaneously drive a set of opposing or

adjacent dampers with a single actuator.

Kit contains:

•Crank arm that attaches to the

splined hub of the shaft adapter

•Other required mounting fasteners

Figure 4. Crank Arm Kit with Mounting

Bracket.

ASK71.4: Kit allows economical mounting

of OpenAir actuators to a variety of

surfaces. Kit should be used in

applications where the actuator can be

rigidly surface mounted and a linear

stroke output is required. Kit contains:

•Crank arm that attaches to the

splined hub of the shaft adapter

•Mounting bracket

•Required mounting fasteners

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions

Document Number 155-176P25

June 22, 2015

Siemens Industry, Inc. Page 5

Accessories,

Continued

Figure 5. Tandem Mounting Bracket.

ASK73.1U:

Provides an extended anti-

rotation pin that allows t

wo modulating GIB

actuators to directly drive a single damper

shaft. For any combination of GIB161x

and GIB166x actuators.

Bracket must be ordered for tandem

installation.

Figure 6. Special Shaft Adapter.

ASK74.1U: Shaft adapter attaches to a

1.05

-inch (26.6 mm) diameter shaft;

whereas, the standard self

-centering

adapter accepts up to a 1.00

-inch (25 mm)

diameter shaft. This special adapter can be

used for coupling to 1

-inch jackshafts that

are slightly oversized.

Shaft adapt

er is 13/16-inches (20 mm)

shorter than the height of the self

-centering

shaft adapter.

985

-052P20:

Small shaft insert (package of

20) when using the GIB actuator on a

damper shaft less than 3/4

-inch (20 mm)

diameter.

Figure 7. NEMA 3R Weather Shield.

ASK75.1U: GBB and GIB 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

ASK75.1U Weather Shield and outdoor-

rated conduit fittings in the vertical

position.

For dimensions, see Figure 28.

Figure 8. NEMA Type 4X Weather Shield.

ASK75.7U: GBB and GIB 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 29.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control

Document Number 155-176P25

June 22, 2015

Page 6 Siemens Industry, Inc.

Figure 9. Heater/Weather

Shield Assembly.

985-106: Provides protection for GIB,

GBB and GCA OpenAir actuators in an

outside low temperature. Assembly

includes:

•Weather Shield (ASK75.1U)

•Heater Kit (985-105)

Figure 10. Conduit Adapter.

985

-008: 1/2-inch (12 mm) for 1/2-inch

NPT connector.

Service Parts

Figure 11.

Position Indicator.

Figure 12.

Standard Shaft Adapter.

Figure 13.

Anti-rotation (Mounting) Bracket.

985-003

(package of 10)

985-004

985-006

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions

Document Number 155-176P25

June 22, 2015

Siemens Industry, Inc. Page 7

Actuator

Components

Figure 14. Components of the Modulating

Actuator.

Legend

1. Positioning scale for angle

of rotation

2. Span adjustment

3. Offset (start point)

adjustment

4. Direction of rotation arrow

5. Connection cables

6. Manual override

7. Auxiliary switch B

8. Auxiliary switch A

9. Position indicator

10. Self-centering shaft

adapter

11. Shaft adapter locking clip

12. Position indicator adapter

13. Mounting bracket

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control

Document Number 155-176P25

June 22, 2015

Page 8 Siemens Industry, Inc.

Operation

A continuous 0 to 10 Vdc signal from a controller to wire Y operates 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 wires U and G0 (system neutral) to

monitor the position of the damper motor.

In the event of a power failure, depending on load, the actuator may not hold the

commanded (or new) position. In the event only the control signal is lost, the actuator

returns to the "0" position.

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.

Control Signal

Adjustment GBB/GIB 163x GBB/GIB 164x

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

U0, (start point) 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

U0 Offset (start point)

∆U Span

1. Uo =0V, ∆U = 2V Minimum working range

for Ys = 100%

2. Uo = 5V, ∆U = 30V Maximum working range

for Ys = 100%

3. Uo = 0V, ∆U ≈10V Factory setting

Setting for

10V span

0 offset

Figure 15. Minimum, Factory Setting, and

Maximum Control Signal Adjustment.

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control Technical Instructions

Document Number 155-176P25

June 22, 2015

Siemens Industry, Inc. Page 9

Operation,

Continued

Control Signal

Adjustment Example

Open the actuator from 0% to 50% (45°) using a control signal of Umin = 2V to Umax =

10V.

Calculating the value of ∆U:

∆

100 [%] x

(U max

U min)

Working angle of rotation [%]

100% x (10V - 2V)

50%

−

Settings:

Uo = 2V; ∆U = 16V

Umin = minimum control signal

Umax = maximum control signal

Figure 16. Example.

Dual Auxiliary Switch GBB/GIB 164x, and GBB/GIB 166x

Actuator Scale:

Clockwise

Adjustment range for Switches A and B

Setting interval: 5°

Switching hysteresis: 2°

Actuator Scale:

Counterclockwise

NOTE:The auxiliary switch setting shafts turn together with the actuator. The scales are

valid only when the actuator is in the "0" position on clockwise motion.

To change the settings of A and B, use a

flat-blade screwdriver to turn the switch

adjustment dials to the desired setting at

which a signal is to be given.

Factory setting

Switch A 5°

Switch B 85°

Figure 17. Dual Auxiliary Switch Dials.

Technical Instructions GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control

Document Number 155-176P25

June 22, 2015

Page 10 Siemens Industry, Inc.

Sizing The number of actuators required depends on several factors. To determine the quantity

of actuators required for the installation, do the following:

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 = Torque Rating × Damper Area

4. Select the total quantity of actuators required:

Number of actuators =

Total Damper Torque required

SF x Actuator Torque (Refer to Specifications)

1Safety Factor: When calculating the number of actuators required, a safety factor

should be included for unaccountable variables such as slight misalignments, aging

of the damper, etc. A suggested safety factor is 0.80 (or 80% of the rated torque).

Mounting and

Installation

Figure 18. Acceptable NEMA 2

Positions.

Figure 19. Acceptable NEMA 2 Position

for Tandem Applications.

•The direction of rotation switch must be set to match the clockwise or

counterclockwise rotation of the damper shaft. The factory setting is clockwise. See

Figure 14 for location on the actuator.

Figure 20. Direction of Rotation Switch.

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

determines whether the shaft adapter will be mounted on the front or back side of

the actuator.

•See Specifications for minimum and maximum damper shaft dimensions.

•The shaft adapter can be mounted on either side of the actuator. The direction of

rotation and shaft length determine how the shaft adapter will be mounted on the

actuator.

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

counterclockwise 0 to 90 scale.

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

of the damper.

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

actuator.

•Detailed mounting instructions are included with each actuator.

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