Siemens OpenAir GLB141.1P Owner's manual

Siemens Industry, Inc.
Technical Instructions
Document No. 155-785
January 20, 2017
OpenAir™Electronic Damper Actuators
GLB Series
Enhanced Non-spring Return Rotary
Description
The OpenAir direct coupled enhanced non-spring return rotary electric actuators are
designed for two-position/floating or modulating control of dampers.
Features
Selectable modulating control signal (0 to 10 Vdc or 2 to 10 Vdc).
24 Vac/dc compatible.
New line voltage (34x models) for 100 to 240 Vac two-position/floating control.
Integral 1/2-inch conduit connection.
Manual override.
Independently adjustable dual auxiliary switches available.
cUL and UL listed; certified
Application
These actuators are used in constant or variable air volume installations for control of
HVAC dampers requiring up to 88 lb-in (10 Nm) of torque.
Product Numbers Table 1.
Torque
Product Number
Control
Signal
Feedback
Dual
Auxiliary
Switches
Pre-Cabled
Power Supply
88 lb-in
(10 Nm)
GLB141.1P
2-position/
Floating
—
—
Plenum
24 Vac/dc
GLB141.1Q
—
—
6-ft length
GLB146.1P*
—
•
Plenum
GLB341.1U
—
—
Standard
100 to 240 Vac
GLB346.1U*
—
•
Standard
GLB161.1P
Modulating
0(2) to 10 Vdc
•
—
Plenum
24 Vac/dc
GLB166.1P*
•
•
Plenum
GLB161.1Q
•
—
6-ft length
* For conduit adaption, order an ASK76.1U Conduit Adapter. See Accessories.

Technical Instructions OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator
Document Number 155-785
January 20, 2017
Page 2 Siemens Industry, Inc.
Specifications
Power Supply
Operating voltage (G–G0) 24 Vac/dc +/-20%
100 to 240 Vac +/-10%
Frequency 50/60 Hz
Power consumption VA Watt
GLB14x 2.2 1.3
GLB34x 5.8 1.9
GLB16x 2.5 1.5
Control signal
Input signal (Y-G0)
Voltage-input 0(2) 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
Rating Class 2 according to UL, cUL
Class III per EN60730
Auxiliary features
Dual auxiliary switch contact rating 4A resistive, 2A inductive
Voltage
GLB1xx.1P 24 Vac/24 Vdc
GLB34x.1U 250 Vac
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°
Function
Torque 88 lb-in (10 Nm)
Runtime for 90° opening or closing 150 seconds
Nominal angle of rotation 90°
Maximum angular rotation 95°
Mounting
Shaft size: Minimum shaft length 3/4-inch (20 mm)
Figure 1. Acceptable Shaft Sizes.
Housing
Enclosure NEMA Type 2
IP54 according to EN60529
(Not with cable-up mounting
orientation)
Material Durable plastic
Gear lubrication Silicone-free

OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator Technical Instructions
Document Number 155-785
January 20, 2017
Siemens Industry, Inc. Page 3
Specifications, Continued
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 listed to UL60730
cUL certified to Canadian
Standard C22.2 No. 24-93
These devices were approved for installation in plenum areas by Underwriters
Laboratories, Inc., per UL 1995.
EN60730-1, EN60730-2-14
Miscellaneous
Pre-cabled connection 18 AWG
Standard cable length 3 ft (0.9 m)
Life cycle Designed for 100,000 full strokes and
5 million repositions at rated torque
and temperature
Actuator Dimensions, inches (mm) 6.6 L × 2.8 W × 2.4 D
(166.7 L × 71 W × 61 D)
Packaging Dimensions, inches (mm) 6.5 L × 10.3 W × 3.1 D
(165.1 L × 261.1 W × 78.7 D)
Weight 1.35 lb (0.61 kg)
(with packaging) 1.91 lb (0.87 kg)
Accessories
NOTE: The auxiliary switches cannot be added in the field. Order the
product number that includes this option. See Table 1.
Figure 2. Conduit Adapter.
ASK76.1U: Provides a
connection between the
actuator and conduit for
actuator models with auxiliary
switches or built-in
potentiometers. All other
standard actuator models
have built-in conduit adapters.
Figure 3. Rotary-to-Linear.
ASK71.5: Allows a direct-coupled
actuator to provide an auxiliary linear
drive.

Technical Instructions OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator
Document Number 155-785
January 20, 2017
Page 4 Siemens Industry, Inc.
Accessories,
Continued
Figure 4. Rotary-to-Linear with Bracket.
ASK71.6: 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 needed.
Figure 5. Shaft Insert.
ASK78.3U: Shaft inserts for use with
3/8-inch (8 to 10 mm) diameter shafts.
(10/pk). Included in box with GDE/GLB
Series.
NOTE: Factory-installed 1/2-inch guide
must be removed prior to
installation.
Figure 6. 1/2-inch Shaft Guide.
985-101P25: Shaft guide, 1/2-inch (25/pk).
Factory-installed with GDE/GLB Series.
Figure 7. NEMA Type 4X Weather Shield.
ASK75.7U: GLB 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 27.

OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator Technical Instructions
Document Number 155-785
January 20, 2017
Siemens Industry, Inc. Page 5
Actuator
Components,
Continued
2-Position/
Floating
Figure 8. Parts of the Actuator.
Legend
1. Base plate
2. Positioning scale for angle of rotation
3. Rotation direction adjustment
4. Conduit adapter
5. Connection cable
6. Manual override
7. Coupling bushing
8. Factory-installed 1/2-inch guide
9. Auxiliary Switch A
10. Auxiliary Switch B
11. Position indicator
12. Adjustment lever with
locking screw (4 mm hex)
13. Set screw for mechanical
range stop (4 mm hex)
14. Mounting bracket

Technical Instructions OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator
Document Number 155-785
January 20, 2017
Page 6 Siemens Industry, Inc.
Actuator
Components,
Continued
Modulating
Figure 9. Parts of the Actuator.
Legend
1. Base plate
2. Positioning scale for angle of rotation
3. DIP switches
4. Cover for DIP switches
5. Conduit adapter
6. Connection cable
7. Manual override
8. Coupling bushing
9. Factory-installed 1/2-inch guide
10. Auxiliary Switch A
11. Auxiliary Switch B
12. Position indicator
13. Adjustment lever with
locking screw (4 mm hex)
14. Set screw for mechanical
range stop (4 mm hex)
15. Mounting bracket
Operation
A continuous 0 to 10 Vdc or 2 to 10 Vdc signal from a controller to wire 8 (Y) operates
the damper actuator. The angle of rotation is proportional to the control signal. A 0(2) 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 0position.
Life expectancy
An improperly tuned loop will cause excessive repositioning that will shorten the life of
the actuator.

OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator Technical Instructions
Document Number 155-785
January 20, 2017
Siemens Industry, Inc. Page 7
Auxiliary Switches
GLB146.1P, GLB346.1U, GLB166.1P
Figure 10 shows the adjustable switching values for auxiliary Switches A and B.
Actuator Scale:
Clockwise
Adjustment range for
Switches A and B
Setting interval: 5°
Switching hysteresis: 2°
Actuator Scale:
Counterclockwise
Figure 10. Adjustable Switching Values
for the Dual Auxiliary Switches.
NOTE: The auxiliary switch setting shafts rotate with the actuator. The scale is valid only
when the actuator is in the 0 position on clockwise motion.
Use the long arm of the †(AUX SWITCH ADJUSTMENT) to point to the position of Switch A. Use
the narrower tab on the red ring to point to the position of Switch B.
Rotation Direction
GLB14x.1P, GLB34x.1U
Two-position/Floating
Control
Figure 11. Setting the Rotation Direction.

Technical Instructions OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator
Document Number 155-785
January 20, 2017
Page 8 Siemens Industry, Inc.
Rotation Direction
Switch
Modulating
Counterclockwise Clockwise
Figure 12. Direction of Rotation Switch.
The factory setting is clockwise.
The direction of rotation switch should match the damper rotation movement.
Dual in-Line Package
(DIP) Switches
GLB16x.1P
Raise the protective cover from left to right to locate the DIP switches. See
Figure 8 for the location of the cover.
Modulating
control signal selection
Figure 13.
0-10 Vdc Position
(Factory Setting).
To change the control signal from the factory setting (0 to
10 Vdc), move the first DIP switch to the UP (2-10)
position.
Self-adapt Switch
Figure 14.
OFF Position
(Factory Setting).
The factory setting is 0(OFF).
When mechanical angle of rotation is limited, the self-adapt
switch (middle DIP switch) may be turned ON so that the
limited range will become the new 0 to 100% for the
actuator logic. In this case, 0 to 100% is not equal to 90°
CAUTION:
When turning the self-adaptive feature on or
after the software reset with the feature on, the
actuator will enter a five-minute calibration
cycle as the actuator adjusts to the rotation
limits of the system. A software reset happens
after power on or may be caused by
electrostatic discharge (ESD) at levels of 2kV
and above.
The self-adapt capability will scale the control signal
selected, either a 0 to 10 Vdc or a 2 to 10 Vdc signal, within
the adjusted mechanical range. The feedback signal will
also reflect the control signal selected, either a 0 to 10 Vdc
or a 2 to 10 Vdc.

OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator Technical Instructions
Document Number 155-785
January 20, 2017
Siemens Industry, Inc. Page 9
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 eaDamper AringTorque Rat 1

1Safety Factor: When determining the torque of an actuator 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 (or 80% of the rated torque).
4. Select the non-spring return actuator type from Table 3.
Table 2.
Total Torque
Actuator
<44 lb-in (<5 Nm)
GDE
<88 lb-in (<10 Nm)
GLB
<132 lb-in (<15 Nm)
GEB
<221 lb-in (<25 Nm)
GBB
<310 lb-in (<35 Nm)
GIB
>310 lb-in >620 lb-in
(>35 Nm to >70 Nm)
Use tandem mounting bracket ASK73.1 with
any GIB1x actuator.
Mounting and
Installation
Place the actuator on the damper shaft so that the front of the actuator is
accessible. The label is on the front side. A mounting bracket is included with the
actuator.
The minimum damper drive shaft length is 3/4-inch (20 mm).
Observe the service envelope around the actuator as shown in Figure 28.
Detailed mounting instructions are included with each actuator.
1/2-inch Ø
Factory-Installed
Guide
3/8-inch Ø
Use the shaft insert supplied for any
3/8-inch (8 to 10mm) diameter shaft
5/8-inch Ø
Figure 15. Damper Shaft Sizes.
NOTE: For all damper shafts with the exception of the 1/2-inch round shaft: Remove
the 1/2-inch Ø factory-installed guide before installation.

Technical Instructions OpenAir™GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator
Document Number 155-785
January 20, 2017
Page 10 Siemens Industry, Inc.
Manual Override
To move the damper blades and lock the position with no
power present:
1. Slide the red manual override knob toward the back of
the actuator.
2. Make adjustments to the damper position.
3. Slide the red manual override knob toward the front of
the actuator.
Once power is restored, the actuator returns to automated
control.
Figure 16.
Manual Override.
Mechanical
Range
Adjustment
To mechanically limit the range of the damper blade, do the following:
1. Loosen the stop set screw.
2. Move the screw along the track to
the desired position, and fasten it
in place.
Figure 17. Moving the Mechanical Range Stop.
To use the entire 0(2) to 10V input signal to control the mechanically limited range,
see Figure 14 for setting self-adaptive features.
Example:
Stop set screw at 70°
Self-adapt switch ON
Input signal Y = 5 Vdc
The damper will be at 35° (50% of the adjusted range).
Wiring
All wiring must conform to NEC and local codes and regulations.
Use earth ground isolating step-down Class 2 transformers. Do not use autotransformers.
The sum of the VA ratings of all actuators and all other components powered by one
transformer must not exceed the rating of the transformer.
It is recommended that one transformer power no more than 10 actuators.
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