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ManualsBrandsSiemens ManualsDampersGMA 2-Position Spring Return 62 lb-in Rotary Electronic Damper Actuators w/ Aux. Switches (24 Vac)

OpenAir™

Technical Instructions

Document No. 155-315P25

EA GMA

January 26, 2011

GMA Series, Spring Return, 62 lb-in,

Rotary, Electronic Damper Actuators

Siemens Industry, Inc.

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.

Summary of content (21 pages)

PAGE 1
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.
PAGE 2
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.
PAGE 3
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.
PAGE 4
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.
PAGE 5
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.
PAGE 6
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.
PAGE 7
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.
PAGE 8
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.
PAGE 9
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.
PAGE 10
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.
PAGE 11
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.
PAGE 12
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".
PAGE 13
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.
PAGE 14
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.
PAGE 15
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 16
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.
PAGE 17
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).
PAGE 18
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.
PAGE 19
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.
PAGE 20
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.
PAGE 21
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.