SIEMENS GGA126.1E-T12 Actuators for Fire and Smoke Protection Dampers Instructions

: July 21, 2024
: SIEMENS

OpenAir™

Actuators for Fire and Smoke Protection Dampers

GGA126.1E/.., GGA326.1E/..

Electric motor driven actuators for 2-position control, for controlling fire and smoke protection dampers

Operating voltage:
– GGA126.1E/..: AC 24 V / DC 24…48 V
– GGA126.1E/..: AC 230 V
Nominal torque 18 Nm
Spring return to failsafe position
Mechanically adjustable span between 0…90°
Prewired with connection cables (0.9 m)
Optional temperature monitoring unit with 3 thermal cutouts (72 °C) and test button
Fixed auxiliary switches for switching points 5° and 80°
Rigid connection between actuator and damper shaft

CE1N4617en Smart Infrastructure
2024-02-27

Features

Drive motor
The brushless DC motor ensures accurate speed control, torque monitoring for protecting the actuator and the air damper, and provides a reliable failsafe function.

Spring return mechanism in the event of power failure
The mechanical spring ensures the failsafe function.

Use

For the control of fire and smoke protection dampers:

Nominal torque of 18 Nm for damper surfaces up to about 2.5 m² (friction dependent).
In fire protection sections of plant where, in the event the thermal fuse cuts out at a duct or ambient temperature of 72 °C, or in case of a power failure, the actuator must travel to the failsafe position (zero position).

Functions

Rotary movement

The direction of rotation (clockwise or counterclockwise) is determined by the way the actuator is mounted on the damper shaft.
When operating voltage is applied, the actuator travels toward the 90° position.

Failsafe function

If the thermal fuse cuts out at a duct or ambient temperature of 72 °C, the return spring drives the actuator to the failsafe position (0°).
– Optional: Thermal fuse cutting out at 95 °C.
In the event of a power failure or if the operating voltage is turned off, the return spring drives the actuator to the failsafe position (0°).

Behavior in the event the damper is blocked

The actuator is equipped with an automatic switch-off mechanism.

Position indication

The position indicator located on the shaft adapter shows the rotational angle position of the damper blade.

Manual adjustment when actuator is without voltage

When dead, the actuator can be driven to any angular position using a hex wrench and can then be secured with a screwdriver.
The actuator returns to its zero position when mechanically delocked with a hex wrench (turning toward “90° – opening”) or by applying power for a short moment.

Rigid connections

Square shafts, 10 x 10 mm or 12 x 12 mm.
The two last digits of the ASN indicate the shaft size:

e.g.:GGA126.1E/C 12 = 12 x 12 mm shaft

Mechanical design

Basic components

Housing

Robust, lightweight all metal housing made from die-cast aluminium.
– Guarantees a long service life even under extreme environmental conditions.

Gear train

Maintenance-free and low-noise gear train.
Stall and overload protection even in continuous use.

Spring preload

The spring has a factory-set preload of 5° to ensure tight shutoff for the fire and smoke protection dampers.

Manual adjustment

A hole with a screw in the center of the actuator allows manual setting of the gears, using the supplied hex wrench.

Mounting bracket

A perforated bracket with pin available, depending on the way the actuator is fixed.

Electrical connection

All actuators come with prewired 0.9 m long connecting cables.

The actuators can be mounted on either side, depending on the required direction of rotation. All setting and operating elements are available on both sides of the actuator.

Auxiliary switches

The auxiliary switches are built-in and have fixed switching points at 5° and 80°.

Setting and operating elements

See also “Features [ 2]” and “Commissioning [ 8]”.

1 Housing
2 Position indicator
3 Shaft adapter
4 Stop shaft for gear train
5 Mounting bracket
6 Connecting cable for auxiliary switches
7 Connecting cable for power supply
8 Pin
9 Hexagon socket for manual override
10 Angle of rotation scale 0…90°
11 Temperature monitoring unit
12 Hex wrench for manual override

Arrangement for shaft adapter

SIEMENS GGA126.1E-T12 Actuators for Fire and Smoke Protection Dampers -
a3

2 Position indicator 3.1 Locking ring for shaft adapter
3 Shaft adapter 3.2 Adapter for position indicator

Temperature monitoring unit (GNA../C.., GNA../T..)

Use
The temperature monitoring unit is ready connected to the actuator and is used for forced control of motorized fire and smoke protection dampers should excessive temperatures occur.

Mode of operation
The temperature monitoring unit contains 3 thermal fuses, 2 for monitoring the duct temperature and 1 for the ambient temperature.

If the temperature at any of these fuses exceeds the level of 72 °C (optionally: 95 °C), the power supply will be irreversibly cut. As a result, the return spring will drive the actuator to the failsafe position.

A test button is built-in for making functional checks. When pressed, the current path will be cut.

LED functions

Red = Operating voltage OK
Thermo sensor defect

Green = Operating voltage OK
Thermo sensor OK

Dark = No operating voltage

Type summary

Type / Stock no.|

Operating voltage

| Auxiliary switches| Temperature monitoring unit|

Cable ends

---|---|---|---|---
GGA126.1E/10|

AC 24 V
DC 24…48 V

| Fixed switching points at 5° and 80°| No|

Open 1)

GGA126.1E/12
GGA126.1E/T10|

Yes

GGA126.1E/T12
GGA126.1E/C10|

AMP plug 2)

GGA126.1E/C12
GGA326.1E/10|

AC 230 V

| No|

Open 1)

GGA326.1E/12
GGA326.1E/T10|

Yes

GGA326.1E/T12

1) 2)

Scope of delivery
Due to the mounting choices depending on the direction of rotation and the shaft length, shaft adapter with position indicator and other mounting accessories are shipped unassembled together with the actuator.

Connecting cables
The actuators come with 0.9 m long prewired connecting cables.
The cable length to the ready fitted temperature monitoring unit is 0.9 m.

Accessories

Type	Stock no.	Designation
ASK79.4	Duct tip for temperature monitoring unit: 72 °C
ASK79.5	Duct tip for temperature monitoring unit: 95 °C
ASK74.17	S55859-Z108	Shaft adapter 15 x 15 mm
ASK74.20	S55859-Z111	Shaft adapter 8 x 8 mm

Equipment combinations

The damper actuators can be used with all types of controllers having a 2-position output and delivering a switching voltage of AC 24 V / DC 24…48 V or AC 230 V.

Product documentation

Topic	Title	Document ID
Mounting instructions	Rotary-type actuator with spring return GGA…1E/..

M4617
Mounting instructions| Duct tip for temperature monitoring unit ASK79.4, ASK79.5| M4610
Data sheet| Accessories and Spare Parts for Air Damper Actuators ASC.., ASK..| N4699

Related documents such as the environmental declarations, CE declarations, etc., can be downloaded from the following Internet address:
https://siemens.com/bt/download

Notes

Safety

CAUTION

| National safety regulations
Failure to comply with national safety regulations may result in personal injury and property damage.

Observe national provisions and comply with the appropriate safety regulations.

Engineering

Correct use
These damper actuators must be used on applications as described in the basic system data documents for the relevant control systems. Additionally, all actuator-specific features and rules must be observed as described in the brief description on the front page of this Data Sheet and in “Use [ 2]”, “Engineering [ 6]” and “Technical data [ 10]”.

Power supply

WARNING

| AC 24 V / DC 24…48 V
These actuators must be used with safety extra low-voltage (SELV) or protection by extra low-voltage (PELV) in accordance with HD 384.

Unearthed = S afety E xtra L ow V oltage SELV
Grounded = P rotection by E xtra L ow V oltage PELV

WARNING

| AC 230 V
The actuators are double-insulated and do not provide a connection for protective ground.

Auxiliary switches A, B

WARNING

| Operation with different phases is not permitted
For auxiliary switches A and B use either:

only mains voltage ; or
only safety low-voltage.

Parallel connection of actuators
Electric parallel connection of the same types of actuator is permitted provided operating voltage is within the required tolerance.
Voltage drops on the supply lines must be taken into consideration.

Sizing transformers (AC 24 V)

Use safety isolating transformers with double insulation conforming to EN60742. The transformers must be suited for 100 % duty.
Observe all local safety rules and regulations relating to the sizing and protection of transformers.
Determine the transformer’s size by adding up the power consumption in VA of all actuators used.

Mounting

Mounting instructions
For detailed information on the correct preparation of the actuator, refer to Mounting Instructions M4617.

The actuator must be fitted to the fire and smoke protection damper as specified by the OEM.

Shaft adapter and other accessory items come unassembled, since their assembly depends on the direction of rotation and the length of the shaft, see “Mechanical design [ 3]”.

Housing

IP54

Mounting bracket / pin
If the actuator is mounted directly on the damper shaft, the mounting bracket / pin must be used. The insertion depth for the shaft into the housing must be sufficient.

Damper shafts
For information on minimum length and diameter of the damper shaft, see “Dimensions / Weight” (Technical data [ 12]).

Spring preload
The actuator is supplied with a 5° spring preload to ensure a certain closing pressure for the air damper.

Mechanical limitation of the angle of rotation
If required, the angle of rotation can be limited in increments of 5° for the entire correcting span by placing the shaft adapter in the respective position.

Temperature monitoring unit
The temperature monitoring unit is to be fitted to the duct wall or the damper housing using 2 self-tapping screws of 3.5 mm diameter.

The enclosed drilling template facilitates mounting. When mounting, it must be ensured that the thermal fuse is fully exposed to the airflow.

Commissioning

Actuator
All information required for commissioning is contained in the following pieces of documentation:

present Data Sheet N4617;
Mounting Instructions M4617;
Plant diagram.
1. Environmental conditions
– Check to ensure that all permissible values as specified in “Technical data [ 10]” are observed.
2. Mechanical check
– Check for proper mounting to ensure that all mechanical settings are in accordance with plant-specific requirements.
– Check in particular, whether the air dampers are shut tight when in the fully closed position.
– Fasten the actuator securely to avoid side load.
– Check the direction of rotation by turning the gearing with a hex wrench in accordance with the Mounting Instructions.
3. Electrical check
– Check to ensure that the cables are connected in accordance with the plant wiring diagram.
– Operating voltage AC 24 V / DC 24…48 V (SELV/PELV) or AC 230 V must be within the tolerance.
– Auxiliary switches A and B change over when the actuator reaches the respective positions.

Temperature monitoring unit
Functional check on site:

1. Press the button to simulate overtemperature.
– This simulates the response of the fuse, enabling you to check the proper functioning of the actuator.
2. In plant equipped with a fire alarm device BAM, fire alarm will be triggered.
– Appropriate measures must be taken before the functional check is made.

Maintenance

CAUTION

| The actuator is maintenance-free.

Do not open the actuator!
Maintenance work may only be carried out by the manufacturer.

Disposal

| The device is considered an electronic device for disposal in accordance with European Directive and may not be disposed of as domestic waste.

Use only designated channels for disposing the devices.
Comply with all local and currently applicable laws and regulations.

---|---

Technical data

Actuator

Power supply

Operating voltage
| GGA126..| AC| 24 V ± 20 %| (SELV/PELV)
DC| 24…48 V ± 20 %
GGA326..| AC| 230 V ± 15 %
Power consumption
| GGA126..| Running| AC| 7 VA / 5 W
DC| 4 W
Holding| AC| 5 VA / 3 W
DC| 3 W
GGA326..| Running| 8 VA / 6 W
Holding| 6 VA / 4 W
Frequency| 50/60 Hz
Functional data

Torque
| Nominal torque| 18 Nm
Maximum torque (blocked)| 50 Nm
Angle of rotation
| Nominal angle of rotation| 90°
Maximum angle of rotation| 95° ± 2°
Runtimes
| Runtime for nominal angle of rotation 90° (motor operation)| 90 s
Closing time with spring return (on power failure)| 15 s
Auxiliary switches

AC power supply
| Switching voltage| AC 24…230 V
Nominal current| Resistive| 6° A
Inductive| 2° A
Life| 6 A resistive, 2 A inductive| 104 cycles
Without load| 106 cycles
DC power supply
| Switching voltage| DC 12…30 V
Nominal current| DC 2 A
Auxiliary switches

Electrical strength auxiliary switches against housing| AC 4 kV
Switching hysteresis| 2°
Factory switch settings
| Switch A| 5°
Switch B| 80°
Connecting cables

Halogen-free
Power supply line
| AC 24 V| (wires 1-2)| 2 x 0.75 mm²
AC 230 V| (wires 3-4)| 2 x 0.75 mm²
Auxiliary switch cable| (wires S1…S6)| 6 x 0.75 mm²
Standard length| 0.9 m
Degree of protection

Housing| IP54 to EN 60529
(observe “Mounting [ 7]”)
Protection class
| Power supply AC 24 V / DC 24…48 V| III to EN 60730
Power supply 230 V| II to EN 60730
Environmental conditions

Operation| IEC 721-3-3
| Temperature| -32…50 °C
Humidity (non-condensing)| < 95 % r.h.
Transport| IEC 721-3-2
| Temperature| -32…50 °C
Humidity (non-condensing)| < 95 % r.h.
Standards and directives

Product standard| EN 60730
Part 2-14: Automatic electronic controls for household and similar use
(type 1)
Electromagnetic compatibility (field of use)| For residential, commercial, and industrial environments
EU conformity (CE)| A5W00004372 1)
UK conformity (UKCA)| A5W00198168 1)
RCM conformity| A5W00004373 1)
Environmental compatibility

The product environmental declaration CE1E4617en 1) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal).
Dimensions / Weight

The documents can be downloaded from:
https://siemens.com/bt/download

Temperature monitoring unit
(ready connected to GGA..26.1E/T.., GGA..26.1E/C..)

Connecting cable	Halogen-free
Length	0.9 m
Wires	2 x 0.5 mm²

See also
Dimensions [ 16]

Diagrams

Internal diagrams

GGA126.1E..

AC 24 V / DC 24…48 V
(SELV/PELV)

GGA326.1E..

AC 230 V

Cable designations

Connection

| Cable|

Meaning

---|---|---
Code| No.| Color| Abbreviation
Actuators
AC 24 V / DC 24…48 V| G| 1| red| RD| System potential AC 24 V / DC 24…48 V
G0| 2| black| BK| System neutral
Actuators
AC 230 V| L| 3| brown| BN| Line AC 230 V
N| 4| blue| BU| Neutral
Auxiliary switches| Q11| S1| grey/red| GYRD| Switch A input
Q12| S2| grey/blue| GYBU| Switch A normally-closed contact
Q14| S3| grey/pink| GYPK| Switch A normally-open contact
Q21| S4| black/red| BKRD| Switch B input
Q22| S5| black/blue| BKBU| Switch B normally-closed contact
Q24| S6| black/pink| BKPK| Switch B normally-open contact

Connection diagrams

GGA126.1E..

AC 24 V / DC 24…48 V
(SELV/PELV)

GGA326.1E..

AC 230 V

Dimensions

Actuator

Dimensions in mm

Temperature monitoring unit

Dimensions in mm

LED functions

Red = Operating voltage OK
Thermo sensor defect

Green = Operating voltage OK
Thermo sensor OK

Dark = No operating voltage

Revision numbers

Type	Valid from rev. no.	Type	Valid from rev. no.
GGA126.1E/10	..A	GGA326.1E/10	..A
GGA126.1E/12	..A	GGA326.1E/12	..A
GGA126.1E/T10	..A	GGA326.1E/T10	..A
GGA126.1E/T12	..A	GGA326.1E/T12	..A
GGA126.1E/C10	..A
GGA126.1E/C12	..A

Siemens CE1N4617en
Smart Infrastructure 2024-02-27

Issued by
Siemens Switzerland Ltd
Smart Infrastructure
Global Headquarters
Theilerstrasse 1a
CH-6300 Zug
+41 58 724 2424
www.siemens.com/buildingtechnologies

© Siemens 2005-2021
Technical specifications and availability subject to change without notice.

Document ID CE1N4617en
Edition 2024-02-27