Siemens Building Technologies OpenAir GMA Series Catalog Page

Electronic Damper Actuator

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Spring Return

OpenAir

GMA Series

Easily Replaces:

• Belimo LN/NF Series

62 lb.-in. Torque 24 Vac/Vdc, 2-position Control 120 Vac, 2-position Control 24 Vac/dc, Floating Control 0 to 10 Vdc, Modulating Control 2 to 10 Vdc/10 to 2 Vdc, Modulating Control

Description

The OpenAir GMA Series Direct-coupled, Spring Return Electronic Damper Actuators provide modulating, two-

position and oating control of building HVAC dampers.

Features

• 24 Vac/dc compatible

• Integral 1/2-inch conduit connector

• Small actuator footprint with 62 lb.-in. of torque

• Bi-directional fail-safe spring return

• Unique self-centering shaft coupling

• Floating control models available with feedback potentiometer

• Manual override

• Mechanical range adjustment capability

• Easily visible position indicator

• Brushless DC motor technology

• Precabled

• UL60730, cUL (C22.2 No. 24-93), and CE listed

• All modulating types contain built-in feedback

• Assembled in the U.S.A

Options

• Dual independently adjustable auxiliary switch

• Adjustable offset and span

• Signal inversion

GMA Series Spring Return

Direct-coupled Electronic Damper Actuator.

Applications

The OpenAir GMA Series Damper Actuators are ideal for constant or variable air volume installations for the control of return air, mixed air, exhaust, and face and bypass dampers that require up to 62 lb.-in. of torque.

The actuators are designed for applications where the damper is required to return to a fail-safe position when there is a power failure.

Models are available with either an appliance cable for wiring in conduit or a plenum-rated cable.

B-7

Damper Actuators

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GMA Series Speciﬁcations

B-8

Operating Voltage

GMA12x, GMA13x, GMA16x, GMA15x ..... 24 Vac ±20%; 24 Vdc ±15%

GMA22x .......................................................................... 120 Vac ±10%

Frequency .................................................................................. 50/60 Hz

Power Consumption .................................................................24 Vac/dc

Running .................................................................................5 VA/3.5W

Holding ......................................................................................4 VA/3W

Equipment Rating ........................... Class 2, in accordance with UL/CSA

Control Signal

Input Signal (wires 8-2) ............................................................GMA16x

Voltage Input

GMA16x....................................................0 to 10 Vdc (max. 35 Vdc)

GMA15x....................................................2 to 10 Vdc (max. 35 Vdc)

Input Resistance ........................................................... >100K Ohms

Control Signal Adjustment

Offset (Start Point) .................................................................. 0 to 5 Vdc

Factory Setting ............................................................................. 0 V

Span .................................................................................... 2 to 30 Vdc

Factory Setting ........................................................................... 30 V

Dual Auxiliary Switch

Contact Rating

AC Rating .....................................................................24 to 250 Vac

AC 6 A resistive AC 2A General Purpose

DC Rating ...................................................................... 12 to 30 Vdc

DC 2 A

Position Feedback .............................................. 0 to 1000 Ohm <10 mA

Feedback Signal ..............Position output signal (wires 9-2) GMA16x.xx/

GMA15x.xx

Voltage Output

GMA16x........................................................................... 0 to 10 Vdc

GMA15x .......................................................................... 2 to 10 Vdc

Max. Output Current (both) ............................................+1 mA, -0.5 mA

Running Torque ..............................................................62 lb.-in. (7 Nm)

Spring Return Torque ....................................................62 lb.-in. (7 Nm)

Max. Torque ...............................................................186 lb.-in. (21 Nm)

Runtime for 90° operating with motor ........................................ 90 sec.

Closing on power loss ......................................................15 sec. typical

(60 sec. Max. at -25°F)

Nominal Angle of Rotation ................................................90°, 95° max.

Shaft Dimensions .................................1/4 to 3/4-in. (6 to 20.5 mm) Dia.

1/4 to 1/2-in. (6 to 13 mm) Sq.

Min. Shaft Length ..........................................3/4-in. (20 mm) min. length

Temperature

Operating ..................................................-25 to +130°F (-32 to +55°C)

Storage ......................................................-25 to +158°F (-32 to +70°C)

Humidity ...........................................................95% RH, non-condensing

Agency Approvals ....................... UL listed UL60730 (Replacing UL873)

C-UL certied to Canadian Standard C22.2 No. 24-93 CE

Housing

Enclosure .................................................................................. NEMA 1

Material.............................................................Die-cast Aluminum Alloy

Gear Lubrication ..................................................................Silicone free

Pre-cabled Connection ..........................................18 AWG, 3 ft. (0.9 m)

Life Cycle ........................................Designed for over 60,000 full strokes

at rated torque and temperature

Dimensions .................................................. 8.38" H x 3.25" W x 2.67" D

(212 mm H x 83 mm W x 68 mm D)

Shipping Weight ............................................................2.86 lbs. (1.3 kg)

GMA Series Product Ordering

Damper Actuators

Input Signal Cabling

Modulating, 0 to 10 Vdc, 24 Vac/dc

Modulating, 24 Vac/dc 2 to 10 Vdc/10 to 2 Vdc (Signal inversion)

2-position, 24 Vac/Vdc

2-position, 120 Vac

Floating, 24 Vac/Vdc

Ordering Note Bulk packages contain 10 actuators.

Part No.

Dual Aux.

Switches &

Span/Offset

Standard

Plenum Cable GMA161.1P GMA163.1P — GMA166.1P — Standard GMA161.1U GMA163.1U GMA164.1U GMA166.1U — Plenum Cable GMA151.1P — — GMA156.1P — Standard GMA151.1U — — GMA156.1U — Plenum Cable GMA121.1P — — GMA126.1P — Plenum Cable/Bulk GMA121.1P/B — — — — Standard GMA121.1U — — GMA126.1U — Standard/Bulk GMA121.1U/B — — — — Standard GMA221.1U — — GMA226.1U — Standard/Bulk GMA221.1U/B — — — — Plenum Cable GMA131.1P — — — — Standard GMA131.1U — — GMA136.1U GMA132.1U

Adjustable

Span/Offset

Adjustable

Dual Aux.

Switches

Only

Position

Feedback

Only

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