Data Sheet for Product

Technical Instructions GHD131.2E Linear Damper Actuator
Document No. CA2N4689E-P25 for Modulating Damper Control
Rev. 1, February, 2000
Page 2 Siemens Building Technologies, Inc.
Technical Design
The rotary action of the reversible synchronous motor is converted through a drive gear
into the linear movement of the spindle. The drive gear is mounted between two metal
plates protected from dust by a plastic sleeve. The drive gear incorporates a magnetic
overload clutch, so that end switches and the associated time-consuming adjustments
are unnecessary. The clutch protects the actuator for brief periods against overload.
The actuator should not be operated in a continuously stalled condition. This will
considerably reduce its service life. This must be avoided by suitable control provisions
(e.g., positioning time control).
Accessories
Z/C… assembly kits are available from Siemens Building Technologies for the various
brands of dampers and air outlets.
Please contact Siemens Building Technologies for more information.
Installation
The actuators may be mounted in any orientation. The spindle must be able to travel
freely in and out, and care must be taken to eliminate any lateral and/or twisting force.
Where necessary, a swivel or similar mechanical coupling (e.g., a universal swivel joint)
must be used. Unsuitable mounting can affect the positioning speed.
SACT0002R1
Figure 1. GHD131.2E Linear Damper Actuator in a Ceiling Outlet.
Maintenance
The GHD131.2E actuator requires no maintenance. Care should be taken, however, to
ensure that the spindle always moves freely. It should be cleaned and greased
periodically, as necessary.
Specifications
Power supply Class 2
Nominal voltage 24 Vac, 50/60 Hz
– Max. voltage tolerance ± 20%
Power consumption 1.5 VA
Positioning speed At 50 Hz = 1.10 in./min.
at 60 Hz = 1.30 in./min.
Maximum stroke Depends on application
Force for pull and push Minimum 33 lbs. (nominal at 68°F)
Maximum 49 lbs.
Noise level < 35 dB(A)
Maintenance None required
Operating life > 50,000 strokes
Weight (including packaging) 0.50 lb.
Ambient temperatures
Operation -4 – 122°F (- 20 – 50°C)
Storage -22–158°F(-30–70°C)
Agency certification Conforms to CE requirements