Siemens OpenAir GLB341.1U, OpenAir GLB, OpenAir GLB346.1U, OpenAir GLB161.1P, OpenAir GLB166.1P Technical Instructions

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.

Siemens Industry, Inc.

Technical Instructions OpenAir™ GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator

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

Document Number 155-785
January 20, 2017

Page 2 Siemens Industry, Inc.

OpenAir™ GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator Technical Instructions

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.

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January 20, 2017

Specifications, Continued

Siemens Industry, Inc. Page 3

Technical Instructions OpenAir™ GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator

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.

Document Number 155-785
January 20, 2017

Page 4 Siemens Industry, Inc.

OpenAir™ GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator Technical Instructions

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

Document Number 155-785
January 20, 2017

Siemens Industry, Inc. Page 5