Siemens SR series Specifications

Technical Instructions
Document No. 155-315P25
EA GMA
January 26, 2011
OpenAir™
GMA Series, Spring Return, 62 lb-in,
Rotary, Electronic Damper Actuators
Description
The OpenAir direct-coupled spring return electronic actuator is designed for
modulating, two-position, and floating control of building HVAC dampers.
Features
Brushless DC motor technology with stall protection
Bi-directional fail-safe spring return
Models available with dual, independently adjustable auxiliary switches
Unique self-centering shaft coupling
Manual override
Available in 62 lb-in torque
5° preload as shipped from factory
Mechanical range adjustment capabilities
UL and cUL listed, CE certified
24 Vac/dc compatible
Application
Used in constant or variable air volume installations for the control of return air, mixed
air, exhaust, and face and bypass dampers requiring up to 62 lb-in (7 Nm) torque.
Designed for applications that require the damper to return to a fail-safe position when
there is a power failure.
Siemens Industry, Inc.
Technical Instructions
Document Number 155-315P25
January 26, 2011
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
Product Numbers
Table 1.
●
GMA126.1U
●
●
GMA126.1P
●
●
GMA221.1U
●
●
GMA226.1U
●
●
Feedback Signal Inversion
●
Input Signal Inversion
(Direct or Inverse Acting)
GMA121.1P/B
Offset 0 to 5 Vdc
Span 2 to 30 Vdc
●
●
Dual Auxiliary Switches
●
●
Position Feedback
●
GMA121.1P
Plenum
Standard
GMA121.1U
Floating
Built-In Control
Options
Cables
2-position
Modulating 2 to 10 Vdc
Control
Modulating 0 to 10 Vdc
120 Vac ±10%
Product
Number
24 Vac ±20%
24 Vdc ±15%
Operating
Voltage
●
●
●
●
●
●
●
●
●
GMA131.1U
●
●
●
GMA131.1P
●
●
GMA132.1U
●
●
●
GMA136.1U
●
●
●
GMA151.1U
●
●
GMA151.1P
●
●
GMA156.1U
●
●
GMA156.1P
●
●
GMA161.1U
●
●
GMA161.1P
●
●
GMA163.1U
●
●
GMA163.1P
●
●
GMA164.1U
●
●
●
●
●
GMA166.1U
●
●
●
●
●
GMA166.1P
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
Warning/Caution Notations
Page 2
WARNING:
Personal injury/loss of life may occur if you do not perform a
procedure as specified.
CAUTION:
Equipment damage may occur if you do not perform a
procedure as specified.
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
Specifications
Power Supply
24 Vac/24 Vdc
Power Supply
120 Vac
Operating voltage
Frequency
Power consumption
running (GMA 12x, 13x, 15x, 16x)
holding (GMA 12x, 13x, 15x, 16x)
Equipment rating
Operating voltage
Frequency
Power consumption
running and holding (GMA 22x)
Technical Instructions
Document Number 155-315P25
January 26, 2011
24 Vac ±20%; 24 Vdc ±15%
50/60 Hz
5 VA/3.5W
4 VA/3W
Class 2, in accordance with UL/CSA
Class III per EN 60730
120 Vac ±10%
50/60 Hz
7 VA/5W
Control Signal
Input signal (wires 8–2)
voltage input signal GMA16x
voltage input signal GMA15x
input resistance
0 to 10 Vdc (max. 35 Vdc)
2 to 10 Vdc (max. 35 Vdc)
>100K ohms
Feedback Signal
Position output signal (wires 9–2)
voltage output signal GMA16x
voltage output signal GMA15x
maximum output current
0 to 10 Vdc
2 to 10 Vdc
+1 mA, -0.5 mA
Function
Mounting
Running/spring return torque
Maximum torque
Runtime for 90°
operating with motor
closing (on power loss) with spring return
62 lb-in (7 Nm)
186 lb-in (21 Nm)
Nominal angle of rotation
Maximum angular rotation
Shaft size
90°
95°
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
3/4-inch (20 mm)
Minimum shaft length
Housing
Ambient Conditions
Agency Certification
Siemens Industry, Inc.
Enclosure
90 seconds
15 seconds typical
(60 seconds max. at -25°F [-32°C])
Material
Gear lubrication
NEMA 1
IP54 according to EN 60 529 (limited
positions; see OpenAir™ GMA Series
Installation Instructions (129-307)
Die cast aluminum alloy
Silicone free
Ambient temperature
operation
storage and transport
Ambient humidity (non-condensing)
-25°F to 130°F (-32°C to 55°C)
-40°F to 158°F (-40°C to 70°C)
95% rh
UL listed to UL60730 (to replace UL873)
cUL certified to Canadian Standard
C22.2 No. 24-93
Australian Electromagnetic
Compatibility (EMC) per
AS/NZS 4251.1/2:1999 (C-tick)
Page 3
Technical Instructions
Document Number 155-315P25
January 26, 2011
Agency Certification,
continued
Conformity
Auxiliary Features
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
Low voltage directive (LVD)
Electromagnetic compatibility (EMC)
Immunity for all models, except GMA132.xx
Immunity for GMA132.xx
Emissions for all models
Control signal adjustment
Offset (start point)
Span
Dual auxiliary switches
AC rating (standard cable)
2006/95/EC
EN 60 730-2-14
(Type 1)
2004/108/EC
EN61000-6-2
EN61000-6-1
EN61000-6-3
Between 0 to 5 Vdc
Between 2 to 30 Vdc
24 to 250 Vac
AC 6A resistive
AC 2A general purpose
24 Vac
AC 4A resistive
AC 2A general purpose
AC rating (Plenum cable)
DC rating (Standard/Plenum cable)
12 to 30 Vdc
DC 2A
Switch Range
Switch A
Recommended range usage
Factory setting
Switch B
Recommended range usage
Factory setting
0° to 90° with 5° intervals
0° to 45°
5°
0° to 90° with 5° intervals
45° to 90°
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:
Page 4
With plenum cables, only UL-Class 2 voltage
(SELV for CE) is permitted.
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
Specifications,
continued
Miscellaneous
Technical Instructions
Document Number 155-315P25
January 26, 2011
Feedback potentiometer (GMA 132.1U)
Sliding contact (P2)
Load
Voltage
0 to 1000 ohm <10 mA
<1W
UL-Class 2 (SELV/PELV for CE)
<24 Vac/dc
Pre-cabled connection
18 AWG (0.75 mm2)
Cable length
3 feet (0.9 m) length
Noise level
40 dBA
Life cycle
Designed for over 60,000 full stroke
cycles and a minimum of 1.5 million
repositions at rated torque and
temperature
Dimensions
8-3/8-in. H × 3-1/4-in. W × 2-2/3-in. D
(212 mm H × 83 mm W × 68 mm D)
2.9 lbs (1.3 kg)
USA
Weight
Country of Origin
Actuator
Components
13
1
12
2
11
10
3
14
13
EA0919R1
EA0917R1
15
9
4
5
6
18
7
8
16
17
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.
Gear train lock pin
10. Manual override wrench opening
and direction of rotation arrow
11. Auxiliary switches A and B
12. Position indicator
13. Self-centering shaft adapter
Figure 1. Components of the GMA Spring
Return Actuator.
14. Shaft adapter locking clip
15. Position indicator adapter
16. Key for manual adjustment
17. Adjustment tool for: auxiliary
switches (11), offset/span (4 and 5),
and lock pin (9)
18. 1/2-inch NSPT conduit connections
Siemens Industry, Inc.
Page 5
Technical Instructions
Document Number 155-315P25
January 26, 2011
Accessories
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
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).
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.
Figure 2. Floor/Frame Mount Kit.
Support bearing ring to minimize
side loading on the actuator’s
output bearing.
4614Z16
Mounting bracket, and required
mounting fasteners.
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.
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.
4614Z17
Figure 4. Rotary to Linear Crank
Arm Kit with Mounting Bracket.
Mounting bracket, and other
required mounting fasteners.
ASK73.3: Bracket provides an extended
anti-rotation pin allowing two actuators to
directly drive a single damper shaft
(tandem operation).
NOTE: GMA16x and GMA15x must not
be tandem mounted.
Figure 5. Tandem Mount
Bracket.
Page 6
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
EA0845R1
Accessories,
continued
Technical Instructions
Document Number 155-315P25
January 26, 2011
ASK75.3U: GMA actuators are UL listed
to meet NEMA 3R requirements (a
degree of protection against rain, sleet,
and damage from external ice formation)
when installed with ASK75.3U Weather
Shield and outdoor-rated conduit fittings
in the vertical position. See Figure 20 for
dimensions.
(14)
Figure 6. Weather Shield.
985-108: Provides protection for 24 Vac/dc
OpenAir GMA1xx actuators down to
temperatures of -58°F (-50°C).
Assembly includes:
• Weather Shield
• Heater Kit
EA0992R1
Heating
Element
Thermostat
Figure 7. Heater/Weather Shield
Assembly.
EA0888R1
EA0889R1
Service Parts
985-093
Standard shaft
adapter.
985-098
Adjustment Tool.
EA1089R1
EA0891R1
985-094P10
Position indicators (10/pkg.)
985-092
985-124
499-ohm resistor assembly kit for
Anti-rotation (mounting)
4 to 20 mA applications.
bracket.
Figure 8. GMA Series Service Parts.
Operation
GMA16x, GMA15x
Apply a continuous 0 to 10 Vdc, or 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 or 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 or when the operating voltage is shut off, the
actuator returns to the "0" position.
GMA12x and GMA 22x
When power is applied, the actuator coupling moves toward the open position
"90°". In the event of a power failure or when the operating voltage is shut off, the
actuator returns to the "0" position.
Siemens Industry, Inc.
Page 7
Technical Instructions
Document Number 155-315P25
January 26, 2011
Operation,
continued
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
GMA13x
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/dc
control signal to wire 6 (Y1) causes the actuator coupling to rotate clockwise. A 24
Vac/dc control signal to wire 7 (Y2) causes the actuator coupling to rotate
counterclockwise.
With no control voltage, the damper actuator holds its position. In the event of a
power failure, the actuator spring returns to the "0" 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.
Sizing
The type of actuator required depends on several factors:
1. Obtain damper torque ratings (lb-in/ft2 or 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
SF1
4. Select a spring return actuator using Table 2.
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, etc. A suggested safety factor is 0.80.
NOTE:
Mechanically coupled actuators must be of the exact same type except
for the dual auxiliary switches and feedback potentiometer options. Use
the correct mounting bracket. See Table 2.
Table 2.
Total Torque
DC Power (24 Vdc)
Actuator
<62 lb-in (7 Nm)
>62 lb-in <160 lb-in
(>7 Nm <18 Nm)
>160 lb-in <320 lb-in
(>18 Nm <36 Nm)
AC Power (24 Vac, 120 Vac)
Actuator
GMA
GMA1xx
<62 lb-in (7 Nm)
GCA12x, GCA13x, GCA15x*
>62 lb-in
<160 lb-in
(>7 Nm <18 Nm)
>160 lb-in
<320 lb-in
(>18 Nm <36 Nm)
Use tandem mounting bracket
ASK73.1 with any combination
of:
• GCA12x actuators
• GCA13x actuators
Use tandem mounting bracket
ASK73.2U with any
combination of GCA151 and
GCA156 actuators.*
Page 8
Total Torque
GCA
Use tandem mounting bracket ASK73.1
with any combination of:
• GCA12x actuators
• GCA22x actuators
• GCA13x actuators
• Use tandem mounting bracket
ASK73.2U with any combination of:
• GCA151 and GCA156 actuators*
• GCA161 and GCA166 actuators
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
Mounting and Installation
Technical Instructions
Document Number 155-315P25
January 26, 2011
Flip the actuator to select either clockwise or counterclockwise fail-safe rotation of
the damper shaft. Follow steps 1, 2, and 3 of Table 3 to determine the correct
actuator mounting orientation.
Table 3. Actuator Mounting Orientation and Damper Control.
1
Determining the Actuator
Mounting Orientation
Damper
Type
Power Fail
Spring Return
Position
EA1055R1
Close
Open
Close
Open
3
Actuator
Mounting
Orientation
2-Position
EA1056R1
2
MANUAL
OVERRIDE
MANUAL
OVERRIDE
MANUAL
OVERRIDE
MANUAL
OVERRIDE
GMA12x
Power On
Open
Close
Open
Close
Open
Close
Open
Close
GMA22x
3-Position
Y1
Y2
GMA13x
Y1
Modulating Control
EA1058R1
EA1057R1
Close
Open
Close
Open
Y2
Y = 10V
GMA15x
Y = 2V
GMA16x
GMA15x
Close
Open
Close
Y = 2V
Y = 10V
GMA16x
Open
Y = 10V
(or Y = Uo + ΔU)
Close
Open
Close
Open
Y = 0V
(or Y = Uo)
•
The shaft adapter and the position indicator can be mounted on either side of the actuator. The actuator
mounting orientation and shaft length determine how they will be mounted on the actuator.
•
The minimum damper drive shaft length is 3/4-inch (20 mm).
•
See Specifications for the minimum and maximum damper shaft dimensions.
•
The actuator is shipped from the factory with a 5° preload enabling tight close off of the damper in power-failclose applications.
•
A mounting bracket is included with the actuator.
•
The shaft adapter and mounting parts are shipped in a separate container with the actuator.
•
See the detailed mounting instructions included with each actuator.
Siemens Industry, Inc.
Page 9
Technical Instructions
Document Number 155-315P25
January 26, 2011
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
Manual Override
90º
3
x 7-3/4 = 90º
6
HOLD
2 1
7
8
5
3 mm
h
EA0882R2
4
Rotating
Locking in place
Releasing when power is
absent
Figure 9. Manual Override.
NOTE:
Always turn the key in the direction of the arrow.
CAUTION:
When engaging the gear train lock pin, carefully turn only
about 5 degrees until you meet slight resistance. Turning too
far will strip the lock pin.
To Release Manual
Override
Do one of the following:
•
•
Mechanical Range
Adjustment
Restore power and send a control signal.
When power is absent, do the following:
1. Insert the 3 mm hex key in the override opening.
2. Turn the key in the direction of the arrow.
3. Remove the key.
The angular rotation is adjustable between 0° and 90° at 5-degree intervals.
To limit the range of shaft movement:
1. Remove the locking clip and self-adjusting shaft adapter.
2. Rotate the damper blade shaft to its failed position.
3. Rotate the shaft coupling to the desired position.
4. Insert the shaft adapter into the actuator and fasten it with the locking clip. See
Figure 10.
1
2
EA0278R2
3
MANUAL
OVERRIDE
Figure 10. Mechanical Range Adjustment.
Page 10
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
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.
(Offset and Span)
GMA163
GMA164
YS (%)
100
1)
3)
% OPEN
Control Signal
Adjustment
Technical Instructions
Document Number 155-315P25
January 26, 2011
2)
Uo
U V
2
10
16
Ys
Yu
Uo
ΔU
24
0
1
0
2
5
UO
YU (v)
30
U (max. 30 V)
Mechanical positioning range (100% = angle of rotation 90°)
Control signal
Offset (start point)
Span
1. Uo = 0V, ΔU = 2V
EA0989R1
EA1004R1
U
30
2
5
4
3
Uo
Factory Setting
of 30V span
0 offset
The minimum working range for Ys = 100%
2. Uo = 5V, ΔU = 30V The maximum working range for Ys = 100%
3. Uo = 0V, ΔU ≈ 30V Factory setting
Figure 11. 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 value of ΔU:
ΔU =
Settings
100 [ %] (U max − U min)
Working angle of rotation in %
=
100 x (10 − 2)
50
= 16V
Uo = 2V; ΔU = 16V
Umin = minimum control signal
Umax = maximum control signal
Figure 12. Example.
Siemens Industry, Inc.
Page 11
Technical Instructions
Document Number 155-315P25
January 26, 2011
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
Dual Auxiliary
Switch
Actuator rotary range with the shaft
adapter mounted at position "0".
GMA126
GMA226
GMA136
GMA156
GMA164
GMA166
Setting range for switches A and B
Setting interval: 5°
Switching hysteresis: 2°
To change the settings of A and B:
50
30
60
DIP Switch
Functionality
GMA 151
GMA 156
40
80
EA0875R1
90
NOTE:
50
Use the adjustment tool provided with the
actuator 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°
70
Make sure the actuator is in the "0", fail-safe
position. The scale is valid only in the "0"
position.
20
10
Aux Switch
Adjustment
A
B
Figure 13. Adjustable Switching
Values for the Dual Auxiliary Switches.
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.
Description
Inverse Acting
Inverse-Acting Feedback
Label
Description
Function
Direct-Acting
Input Signal Inversion
Direct-Acting feedback
Feedback Signal inversion
Not In Use
Figure 14. DIP Switches.
Input Signal Inversion
Allows inverting the control input signal
The arrow direction indicates opening or closing (closing or opening)
when operating an actuator with a given control signal.
= Direct acting (Factory setting)
Input signal 2 Vdc ► fail-safe position
Feedback Signal Inversion
= Inverse acting
Input signal 10 Vdc ► fail-safe position
Allows inverting the position feedback output signal
= Direct acting feedback (Factory setting)
Fail-safe position ► Output signal 2 Vdc
= Inverse acting feedback,
Fail-safe position ► Output signal 10 Vdc
Page 12
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
Technical Instructions
Document Number 155-315P25
January 26, 2011
All wiring must conform to NEC and local codes and regulations.
Wiring
Use earth ground isolating step-down Class 2 transformers. Do not use autotransformers.
The maximum rating for a Class 2 step-down transformer is 100 VA. Determine the supply
transformer rating by summing the VA ratings of all actuators and all other components
used. It is recommended that one transformer power no more than 10 actuators (or 80% of
its VA).
WARNING:
Mixed switch operation is not permitted to the switching outputs of both auxiliary
switches (A and B).
Either AC line voltage from the same phase must be applied to all six outputs of
the dual auxiliary switches, or UL-Class 2 voltage (SELV for CE conformance)
must be applied to all six outputs.
NOTE:
With Plenum cables only UL-Class 2 voltage (SELV for CE
conformance) is permitted.
WARNING:
Installations requiring
Wire Designations
Conformance:
•
Except for the auxiliary switches (See Warning above) all wiring for
24 Vac/dc actuators must only be safety extra-low voltage (SELV) or
protective extra-low voltage (PELV) per HD384.
•
Use safety transformers per EN61558 with double isolation, designed for
100% duty-cycle for supplying SELV or PELV circuits.
•
Over-current protection for supply lines is maximum 10A.
Each wire has the standard symbol printed on it. See Table 4.
Table 4. Wire Designations.
Applicable
Actuator
Standard
Symbol
24 Vac/dc
120 Vac
Auxiliary
Switches
Position
Feedback
Siemens Industry, Inc.
1
2
6
7
8
9
3
4
S1
S2
S3
S4
S5
S6
P1
P2
P3
Function
Supply (SP)
Neutral (SN)
Control signal clockwise
Control signal counterclockwise
Input signal: 0 to 10 Vdc (GMA16x) or 2 to 10 Vdc (GMA15x)
Position output: 0 to 10 Vdc (GMA16x) or 2 to 10 Vdc (GMA15x)
Line
Neutral
Switch A − Common
Switch A − N.C.
Switch A − N.O.
Switch B − Common
Switch B − N.C.
Switch B − N.O.
Feedback Potentiometer 0 to 100% P1 - P2
Feedback Potentiometer Common
Feedback Potentiometer 100 to 0% P3 – P2
Terminal
Designations
Color
G
G0
Y1
Y2
Y
U
L
N
Q11
Q12
Q14
Q21
Q22
Q24
a
b
c
Red
Black
Violet
Orange
Gray
Pink
Black
White
Gray/red
Gray/blue
Gray/pink
Black/red
Black/blue
Black/pink
White/red
White/blue
White/pink
Page 13
Technical Instructions
Document Number 155-315P25
January 26, 2011
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
Wiring Diagrams
DUAL AUXILIARY
SWITCHES
SUPPLY
1
COMMON COMMON
S1
S4
SWITCH
A
GMA12x
SWITCH
B
M
Class 2
EA0864R1
24 Vac/dc
2-Position Control
S2
2
NEUTRAL
S3
S5
N.C. N.O.
S6
N.C. N.O.
Figure 15.
DUAL AUXILIARY
SWITCHES
LINE
3
COMMON COMMON
S1
S4
GMA22x
EA0955R1
120 Vac
2-Position Control
SWITCH
A
SWITCH
B
S2
S5
M
4
NEUTRAL
S3
N.C. N.O.
S6
N.C. N.O.
Figure 16.
DUAL AUXILIARY SWITCHES
SWITCH B
COMMON
SWITCH A
COMMON
CW
6
CCW
7
N.C.
S2
N.O.
S3
S1
N.C.
S5
S4
N.O.
S6
GMA13x
M
24 Vac/dc
Floating Control
1000 OHMS
100%
0%
Class 2
EA0873R1
1
SUPPLY
P1
2
0 TO 100%
NEUTRAL P1 TO P2
P3
100 TO 0%
P2 TO P3
P2
COMMON
FEEDBACK POTENTIOMETER
Figure 17.
GMA15x
GMA16x
INPUT
8
24 Vac/dc
Modulating control
OUTPUT
9
DUAL AUXILIARY
SWITCHES
COMMON COMMON
S1
S4
SWITCH
A
SWITCH
B
M
EA0867R1
Class 2
S2
1
2
S3
N.C. N.O.
S5
S6
N.C. N.O.
SUPPLY NEUTRAL
Figure 18.
Page 14
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
Special
Applications
Technical Instructions
Document Number 155-315P25
January 26, 2011
Supply (+)
Supply
4 to 20 mA
GMA15x
Controller
24 Vac/dc
Control
Signal
External
Resistor
Kit
985-124
1
Supply
Neutral
8
Input
2 to 10V
Actuator
Neutral
EA1090R1
2
Neutral (-)
Figure 19. GMA 151 and GMA156, 4 to 20 mA Applications.
Siemens Industry, Inc.
Page 15
Technical Instructions
Document Number 155-315P25
January 26, 2011
Start-Up/
Commissioning
1.
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
Check Operation:
a.
Connect wires 1 (red) and 2 (black) to the 24 Vac/dc power supply.
NOTE: With no input signal present, the GMA15x actuator with input signal
inversion switch set to Inverse Acting will start driving towards 90°.
GMA16x, GMA15x
Spring Return
Modulating Control
24 Vac/dc
b.
Use a Digital Multimeter (DDM) and set the dial to Vdc for the actuator input signal.
c.
Connect wires 2 (black) and 8 (gray) to the DMM.
d.
Apply to input signal wire 8 (gray):
Y = 10 Vdc or Y = Uo + ∆U (GMA16x)
Y = 10 Vdc (GMA15x with input signal inversion switch set to Direct Acting)
Y = 2 Vdc (GMA15x with input signal inversion switch set to Inverse Acting)
Allow the actuator shaft coupling to rotate from 0° to 90°.
e.
Apply to input signal wire 8 (gray):
Y = 0 Vdc or Y = Uo (GMA16x)
Y = 2 Vdc (GMA15x with input signal inversion switch set to Direct Acting)
Y = 10 Vdc (GMA15x with input signal inversion switch set to Inverse Acting)
The shaft coupling returns to the "0" position.
2.
Check Spring Return:
a.
Set the DMM dial to Vdc.
b.
Connect wires 2 (black) and 8 (gray) to the DMM.
c.
Apply to input signal wire 8 (gray):
Y = 5 Vdc or Y = Uo + 1/2 ∆U (GMA16x)
Y = 6 Vdc (GMA15x)
Allow the actuator shaft coupling to rotate halfway.
d.
Disconnect wire 1 (red).
The spring returns the actuator shaft coupling to the fail "0" position.
e.
3.
Connect wire 1 (red) and the actuator moves.
Check Feedback:
a.
Set the DMM dial to Vdc.
b.
Attach wires 2 (black) and 9 (pink) to the DMM.
c.
Apply the input signal as in Step 1d, to wire 8 (gray).
The reading at the DMM should increase (decrease for GMA15x with output signal inversion
switch set to Inverse Acting Feedback).
d.
Apply the input signal as in Step 1f, to wire 8 (gray).
The reading at the DMM should decrease (increase for GMA 15x with output signal inversion
switch set to Inverse Acting Feedback) and the actuator shaft coupling returns to the fail "0"
position.
4.
Check the Auxiliary Switch A:
a.
Set the DMM dial to ohms (resistance) or continuity check.
b.
Connect wires S1 and S3 to the DMM. The DMM should indicate open circuit or no
resistance.
c.
Apply the input signal as in Step 1d, to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting
of switch A.
d.
Connect wires S1 and S2 to the DMM. The DMM should indicate open circuit or no
resistance.
e.
Apply the input signal as in Step 1f, to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting
of switch A.
Page 16
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
Start-Up/
Commissioning,
continued
5.
Technical Instructions
Document Number 155-315P25
January 26, 2011
Check the Auxiliary Switch B:
a.
Set the DMM dial to ohms (resistance) or continuity check.
b.
Connect wires S4 and S6 to the DMM. The DMM should indicate open circuit or no resistance.
c.
Apply the input signal as in Step 1d, to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of
switch B.
GMA12x
Spring Return
2-Position
24 Vac/dc
Siemens Industry, Inc.
1.
d.
Connect wires S4 and S5 to the DMM. The DMM should indicate open circuit or no resistance.
e.
Apply the input signal as in Step 1f, to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of
switch B.
Check Operation:
a. Connect wires 1 (red) and 2 (black) to 24 Vac/dc power supply.
Allow the actuator shaft coupling to rotate from 0° to 90°.
b. Disconnect wire 1 (red) and the actuator shaft coupling returns to the "0" position.
2.
Check Spring Return:
a. Connect wire 1 (red).
Allow the actuator shaft coupling to rotate halfway.
b. Disconnect wire 1 (red).
The spring returns the actuator shaft coupling to the fail "0" position.
3.
Check the Auxiliary Switch A:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S1 and S3 to the DMM.
The DMM should indicate open circuit or no resistance.
c. Connect wire 1 (red).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of
switch A.
d. Connect wires S1 and S2 to the DMM.
The DMM should indicate open circuit or no resistance.
e. Disconnect wire 1 (red).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of
switch A.
4.
Check the Auxiliary Switch B:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S4 and S6 to the DMM.
The DMM should indicate open circuit or no resistance.
c. Connect wire 1 (red).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of
switch B.
d. Connect wires S4 and S5 to the DMM.
The DMM should indicate open circuit or no resistance.
e. Disconnect wire 1 (red).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of
switch B.
Page 17
Technical Instructions
Document Number 155-315P25
January 26, 2011
Start-Up/
Commissioning,
continued
GMA22x
Spring Return
2-Position
120 Vac
Page 18
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
WARNING: Switch off 120 Vac power before connecting wires 3 (black)
and 4 (white).
1. Check Operation:
a. Switch on 120 Vac power.
Allow the actuator shaft coupling to rotate from 0 to 90°.
b. Switch off 120 Vac power
The actuator shaft coupling will return to the fail "0" position.
2. Check Spring Return:
a. Switch on 120 Vac power.
Allow the actuator shaft coupling to rotate halfway.
b. Switch off 120 Vac power.
The spring returns the actuator shaft coupling to the fail "0" position.
3. Check the Auxiliary Switch A:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S1 and S3 to the DMM.
The DMM should indicate an open circuit or no resistance.
c. Switch on 120 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch A.
d. Connect wires S1 and S2 to the DMM.
The DMM should indicate open circuit or no resistance.
e. Switch off 120 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch A.
4. Check the Auxiliary Switch B:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S4 and S6 to the DMM.
The DMM should indicate open circuit or no resistance.
c. Switch on 120 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch B.
d. Connect wires S4 and S5 to the DMM.
The DMM should indicate open circuit or no resistance.
e. Switch off 120 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch B.
Siemens Industry, Inc.
OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
Start-Up/
Commissioning,
continued
GMA13x
Spring Return
Floating
24 Vac/dc
Siemens Industry, Inc.
Technical Instructions
Document Number 155-315P25
January 26, 2011
1.
Check Operation:
a. Connect wires 1 (red) and 2 (black) to a 24 Vac/dc power supply.
b. Apply a control signal (24 Vac/dc) to wire 6 (violet).
Allow the actuator shaft coupling to rotate from 0 to 90°.
c. Stop the control signal to wire 6 (violet).
d. Apply a control signal (24 Vac/dc) to wire 7 (orange).
Allow the actuator shaft coupling to rotate from 90° to 0°.
2. Check Spring Return:
a. Apply a control signal (24 Vac/dc) to wire 6 (violet).
Allow the actuator shaft coupling to rotate half way.
b. Disconnect wire 1 (red).
The spring returns the actuator shaft coupling to the fail "0" position.
c. Connect wire 1 (red).
The actuator shaft coupling begins to move.
3. Check Feedback:
a. Set the DMM dial to ohms.
b. Connect wires P1 and P2 to the DMM.
The DMM should indicate a resistive value.
c. Apply a control signal (24 Vac/dc) to wire 6 (violet).
The reading of the DMM should increase.
d. Stop the control signal to wire 6 (violet).
e. Connect wires P2 and P3 to the DMM.
The DMM should indicate a resistive value.
f. Apply a control signal (24 Vac/dc) to wire 7 (orange).
The reading of the DMM should increase.
4. Check the Auxiliary Switch A:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S1 and S3 to the DMM.
The DMM should indicate an open circuit or no resistance.
c. Apply a control signal (24 Vac/dc) to wire 6 (violet).
The DMM should indicate contact closure as the actuator shaft coupling
reaches the setting of switch A.
d. Stop the control signal to wire 6 (violet).
e. Connect wires S1 and S2 to the DMM.
The DMM should indicate an open circuit or no resistance.
f. Apply a control signal (24 Vac/dc) to wire 7 (orange).
The DMM should indicate contact closure as the actuator shaft coupling
reaches the setting of switch A.
Page 19
Technical Instructions
Document Number 155-315P25
August 27, 2009
OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electric Damper Actuators
5. Check the Auxiliary Switch B:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S4 and S6 to the DMM.
The DMM should indicate an open circuit or no resistance.
c. Apply a control signal (24 Vac/dc) to wire 6 (violet).
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch B.
d. Stop the control signal to wire 6 (violet).
e. Connect wires S4 and S5 to the DMM.
The DMM should indicate an open circuit or no resistance.
f. Apply a control signal (24 Vac/dc) to wire 7 (orange).
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch B.
Start-Up/
Commissioning,
continued
GMA13x, continued
Service
WARNING:
Do not open the actuator.
If the actuator is inoperative, replace the unit.
Troubleshooting
WARNING:
To avoid injury or loss of life, pay attention to any hazardous voltage
(For example, 120 Vac) when performing checks.
Check that the wires are connected correctly.
Check that span/offset (start point) and Dip switches are set correctly, if used.
Use a Digital Multimeter (DMM) to verify that the operating voltage is within range.
If the actuator is not working, check the damper for blockage. If blocked, remove the
obstacle and cycle the actuator power off and on. The actuator should resume
normal operating mode.
Dimensions
2-31/32
(75,8)
Inches (mm)
EA1017R3
7
(177,8)
OPENING FOR
STANDARD 1/2"
CONDUIT
CONNECTOR (2)
∅
1.04
(26,5)
12-7/16
(315,5)
3-3/4
(95,3)
1-3/8
(35)
Figure 20. ASK75.3U Weather Shield Dimensions.
Page 20
Siemens Industry, Inc.
OpenAir Spring Return, GMA Series, 62 lb-in Rotary, Electronic Damper Actuators
Technical Instructions
Document Number 155-315P25
January 26, 2011
Dimensions, continued
Inches (mm)
1-3/16 1-3/16
(30) (30)
1/8
(3)
min. 4
(100)
47.5˚
25/32
(20)
47.5˚
1-11/16
(42)
Ø 5mm
min. 6
(150)
8-3/8
(212)
5-9/16
(141)
min. 4
(100)
EA0876R1
3.25
(83)
7-1/16
(180)
min. 1/2
(12)
min.2-3/8
(60)
min. 4
(100)
3 ft
(900)
1/2
(12)
3/4
(19)
EA0877R2
2-3/8
(60)
1/2" NSPT
Figure 21. GMA Actuator and Mounting Bracket Dimensions.
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. OpenAir is a registered trademark of Siemens Schweiz AG. Product or company names mentioned herein
may be the trademarks of their respective owners. © 2011 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
USA
+ 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. 155-315P25
Printed in the USA
Page 21