Siemens OpenAir GDE Series Owner's manual

Technical Instructions
Document No. 155-187P25
EA GDE/GLB-1
November 30, 2005
OpenAir™ Electric Damper Actuators
GDE/GLB Series
Non-spring Return Rotary
24 Vac - Modulating Control 0 to 10 Vdc
Description
The OpenAir direct coupled 24 Vac non-spring return rotary electric actuators are designed
for modulating control of dampers.
Features •Compact, lightweight design
•Self-adapting capability for maximum flexibility in damper positioning
•Manual override
•Offset and slope adjustment models available
•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 44 lb-in (5 Nm) or 88 lb-in (10 Nm) of torque.
Product Numbers
Table 1. 24 Vac Operating Voltage.
Torque Cabling Standard
Slope/Offset
Adjustable
Dual Auxiliary
Switches and
Slope/Offset
Adjustable
Dual Auxiliary
Switches
Only
GDE161.1PPlenum GDE161.1P/B
(24 pk) GDE163.1P GDE164.1P GDE166.1P
GDE161.1T — — —
44 lb-in (5 Nm)
Terminal Strip GDE161.1T/B
(24 pk) — — —
88 lb-in (10 Nm) Plenum GLB161.1P GLB163.1P GLB164.1P GLB166.1P
Siemens Building Technologies, Inc.

Technical Instructions OpenAir Non-Spring Return Rotary Electric Damper Actuator
Document Number: 155-187P25 24 Vac – Modulating Control
November 30, 2005
Page 2 Siemens Building Technologies, Inc.
Specifications
Power Supply
Operating voltage (G–G0) 24 Vac +20%, -15%
Frequency 50/60 Hz
Power consumption 3.3 VA
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 Rating: Class 2 according to UL, CSA
Class III per EN60730
Auxiliary features
Control signal adjustment
Offset (start point) Between 0 to 5 Vdc
Slope (span) Between 2 and 30 Vdc
Dual auxiliary switch contact rating 4A resistive, 2A inductive
Voltage 24 Vac/24 Vdc
DC rating 12 to 30 Vdc
DC2A
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
GDE 44 lb-in (5 Nm)
GLB 88 lb-in (10 Nm)
Runtime for 90° opening or closing
GDE 90 sec. at 60 Hz (108 sec. at 50 Hz)
GLB 125 sec. at 60 Hz (150 sec. at 50 Hz)
Nominal angle of rotation 90°
Maximum angular rotation 95°
Mounting Shaft size: Minimum shaft length 3/4-inch (20 mm)
EA1010R1
9/16 inch
15 mm
3/8 to 5/8 inch
8 -16 mm
1/4 to 1/2 inch
6 - 12.7 mm
Figure 1. Acceptable Shaft Sizes.

OpenAir Non-Spring Return Rotary Electric Damper Actuator Technical Instructions
24 Vac – Modulating Control Document Number: 155-187P25
November 30, 2005
Siemens Building Technologies, Inc. Page 3
Specifications, continued
Housing
Enclosure: NEMA Type 2
IP54 according to EN60529
Material: Durable plastic
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 listed to UL873
cUL certified to Canadian
Standard C22.2 No. 24-93
conformity In accordance with the directive set forth by the European Union for
Electromagnetic Compatibility (EMC): 89/336/EEC
Emissions standards: EN 50081-1
Immunity standards: EN 50082-2
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 22
Weight: 1.06 lb (0.48 kg)

Technical Instructions OpenAir Non-Spring Return Rotary Electric Damper Actuator
Document Number: 155-187P25 24 Vac – Modulating Control
November 30, 2005
Page 4 Siemens Building Technologies, Inc.
Accessories NOTE: The auxiliary switches cannot be added in the field. Order the product number that
includes this option. See Table 1.
EA0647R1
Figure 2. Conduit adapter.
ASK76.1U Provides connection
between the actuator and conduit.
EA0695R1
Figure 3. Rotary to linear.
ASK71.5 Allows a direct-coupled
actuator to provide an auxiliary linear
drive.
Ea0696R1
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.
EA0496R1
Figure 5. Tandem Mount Bracket.
ASK73.1 Bracket provides extended
anti-rotation pin allowing two OpenAir
actuators to directly drive a single
damper shaft. For use with two- and
three-position actuators.
EA0807R1
Figure 6. Shaft insert.
ASK78.3U Shaft insert 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.
EA1060R1
Figure 7. 1/2-inch Shaft Guide.
985-101P25:
Shaft guide, 1/2-inch (25/pk). Factory
installed with GDE/GLB Series.

OpenAir Non-Spring Return Rotary Electric Damper Actuator Technical Instructions
24 Vac – Modulating Control Document Number: 155-187P25
November 30, 2005
Siemens Building Technologies, Inc. Page 5
Actuator
Components
3
4
5678
80 70 60
2010
Aux Switch
Adjustment
A B
50
90
90
45
0
0
self adapt
self adapt
EA0641R3
U
Uo
U
Ys
V
30
2
16
10
24
Uo
2
4
01
3
5
1
2
16
14
12,13
11
15
10
9
17
Figure 8. Parts of the Actuator.
Legend
1. Base plate
2. Positioning scale for angle of
rotation
3. Slope adjustment
4. Offset (start point) adjustment
5. DIP switches
6. Cover for DIP switches
7. Connection cables
8. Connection cables
9. Manual override
10. Coupling bushing
11. Factory installed 1/2-inch guide
12. Auxiliary switch A
13. Auxiliary switch B
14. Position indicator
15. Adjustment lever with locking screw
(4 mm hex)
16. Set screw for mechanical range
stop (4 mm hex)
17. Mounting bracket
GDE161.1T
EA1093R1
Supply 24 Vac
0 to 10 Vdc Input
COM
Figure 9. Special Features of Terminal Strip Model.
GDE161.1T
This model uses a terminal strip for
connection purposes rather than cable
connections (7,8).

Technical Instructions OpenAir Non-Spring Return Rotary Electric Damper Actuator
Document Number: 155-187P25 24 Vac – Modulating Control
November 30, 2005
Page 6 Siemens Building Technologies, Inc.
Operation A continuous 0 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 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.
Life expectancy An improperly tuned loop will cause excessive repositioning that will shorten the life
of the actuator.
Control signal
adjustment GDE/GLB163.1P and GDE/GLB164.1P: For sequencing and the electronic
limitation of the angle of rotation.
Use the Uo potentiometer to set the offset (start point) between 0 to 5 Vdc.
Use the ΔU potentiometer to set the slope (span) between 2 to 30 Vdc.
NOTE: The Y input is limited to a maximum of 10 Vdc. If the sum of the offset and
slope setting is greater than 10V, the angle of rotation is reduced providing
the feature of electronic limitation of the angle of rotation.
100
0
U
O
Ys [%]
EA0632R1
2 5 10 35
2)
1)
3)
Δ
U (max. 30 V)
4)
Δ
Uw
30
Y [V]
Figure 10.
Ys Actuator position (100% = angle of rotation
90°*)
Y Control input signal
Uo Offset (start point)
ΔU Slope
ΔUw Active voltage range (Ys changes)
* When the mechanical limitation of the angle of
rotation and self-adapt function are ON, 100% does
not equal 90°.
EA0633R2
Uo
U
Ys
V
USLOPE,
30
2
16
10
24
Uo OFFSET,
2
4
01
3
5
Setting for
10V slope
0 Vdc offset
Figure 11.
Table 2.
Examples in Figure 3 Uo
Offset
Vdc
ΔU
Slope
Vdc
Active Voltage
Range
Vdc
Ys
Actuator
Position
1. Minimum slope 0 2 0 to 2 0 to 100%
2. Limitation of rotation 5 30 5 to 10 0 to 16.7%
3. Limitation of rotation 0 30 0 to 10 0 to 33.3%
4. Setting shown in Figure 4 0 10 0 to 10 0 to 100%

OpenAir Non-Spring Return Rotary Electric Damper Actuator Technical Instructions
24 Vac – Modulating Control Document Number: 155-187P25
November 30, 2005
Siemens Building Technologies, Inc. Page 7
Operation,
continued
Control signal
adjustment example:
Determine the setting needed to electronically limit the angle of rotation between 0 to 50%
(0 to 45°) using a 2 to 10 Vdc input.
Calculating the value of ΔU:
VdcVdcVdcVdcUoVdc
[%]
U16)210(
%50 %100
])[][10(
[%]Ysrotationof
angleworking
100 =−×=−×=Δ
Settings: Uo = 2 Vdc;
ΔU = 16 Vdc
Electronic limitation
angle of rotation Ys= 50% (45°)
Slope ΔU = 16V
Active voltage range ΔUw = 2 to 10 Vdc
100
0
Y [V]
Y
S
[%]
EA0634R1
21810
50
U
o
Δ
Uw (8 V)
Δ
U (16 V)
Figure 12. Example.
Auxiliary switches GDE/GLB164.1P and GDE/GLB166.1P
Figure 13 shows the adjustable switching values for the auxiliary switches A and B.
Actuator Scale:
clockwise
Adjustment range for
Switches A and B
Setting interval: 5°
Switching hysteresis: 2°
Actuator Scale:
counterclockwise
AB
-2,5 0 10 20 30 70 80 90 92,5
0 10 20 30 70 80
EA0640R1
92,5 90 80 70 60 20 10 -2,5
90
0
Figure 13. Adjustable Switching Values for
the Dual Auxiliary Switches.
80 70 60
2010
AUX SWITCH
ADJUSTMENT
A B
50
EA0636R2
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 X to point to the position of switch A. Use the narrower tab on the
red ring to point to the position of switch B.

Technical Instructions OpenAir Non-Spring Return Rotary Electric Damper Actuator
Document Number: 155-187P25 24 Vac – Modulating Control
November 30, 2005
Page 8 Siemens Building Technologies, Inc.
Dual in-line package
(DIP) switches Raise the protective cover from left to right to locate the DIP switches. See Figure 2 for
the location of the cover.
The factory setting is 0 (OFF).
When mechanical angle of rotation is limited, the self-adapt 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 a
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.
0
self adapt
EA0637R1
Figure 14.
Self-adapt
Switch.
The position output signal U is not influenced by the self-adapt
function. The 0 to 10V feedback signal U is always proportional to 0
to 90° (or 90 to 0°)
0
self adapt
EA0638R1
Figure 15.
Direction of
Rotation Switch.
The factory setting is clockwise.
The direction of rotation switch should match the damper rotation
movement.
0
self adapt
EA0639R1
Figure 16.
Output Signal
Switch.
The factory setting is direct acting.
As the clockwise angle of rotation increases, the output voltage
increases.
If the direction of rotation is counterclockwise, the output signal
switch should be set at reverse acting to match the direction of the
rotation switch.
NOTE:Feedback not available on terminal strip models.

OpenAir Non-Spring Return Rotary Electric Damper Actuator Technical Instructions
24 Vac – Modulating Control Document Number: 155-187P25
November 30, 2005
Siemens Building Technologies, 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, etc. A suggested safety factor is 0.80
(or 80% of the rated torque).
4. Select the actuator type from Table 3.
Table 3.
Total Torque Actuator
<44 lb-in (5 Nm) GDE16x
<88 lb-in (10 Nm) GLB16x
<132 lb-in (15 Nm) GEB16x
<177 lb-in (20 Nm) GBB16x
<310 lb-in (35 Nm) GIB16x
>310 lb-in >620 lb-in
(35 Nm – 70 Nm) Master/Slave actuators (See Technical Instructions 155-542P2)
OR
Use tandem mounting bracket ASK73.2U
with any combination of GIB16x actuators.
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 22.
•Detailed mounting instructions are included with each actuator.
EA1002R1
1/2 Ø inch
Factory-Installed
Guide
3/8 Ø inch
Use the shaft insert supplied for any
3/8-inch (8 to 10mm) diameter shaft
5/8 Ø inch
Figure 17. Damper Shaft Sizes.
NOTE: For all damper shafts with the exception of the 1/2-inch round shaft: Remove 1/2 Ø inch guide
before installation.

Technical Instructions OpenAir Non-Spring Return Rotary Electric Damper Actuator
Document Number: 155-187P25 24 Vac – Modulating Control
November 30, 2005
Page 10 Siemens Building Technologies, 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.
45
90
90
PL0013R2
MANUAL
ADJUSTMENT
LEVER
AUTO
2
1
3
Figure 18.
Manual Override.
Mechanical range
adjustment To mechanically limit the range of the damper blade.
1. Loosen the stop set screw.
2. Move the screw along the track to
the desired position, and fasten it
in place.
45
90
90
EA0535R2
4 mm
45¡
90¡
90¡
<90¡
2
1
EA0536R2
Figure 19. Moving the Mechanical Range Stop.
To use the entire 0 to 10V input signal to control the mechanically limited range, see
Figure 7 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.)
NOTE: On versions with the slope and offset features, this example assumes
Offset Uo = 0 Vdc
Slope ΔU= 10 Vdc