Data Sheet for Product

Technical Instructions OpenAir
®
GPC Series, Spring Return, 35 lb-in, Rotary, Electronic Damper Actuators
Document Number 155-782
February 26, 2019
Page 4 Siemens Industry, Inc.
Accessories
Figure 2. NEMA Type 4X
Weather Shield.
ASK75.7U: GPC 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 12.
Service Parts
Figure 3. 985-055P24
Anti-rotation Bracket (Mounting).
Figure 4. 985-124
499-ohm Resistor Assembly Kit for
4 to 20 mA Applications.
Operation
GPC16x.1P
Apply a continuous 0(2) to 10 Vdc control signal between wire 8 (Y) and wire 2
(G0) to operate the damper actuator. The angle of rotation is proportional to the
control signal.
A 0(2) to 10 Vdc position feedback output signal is available between wire 9 (U)
and wire 2 (G0) to monitor the position of the damper motor.
In the event of a power failure or when the operating voltage is shut off, the
actuator returns to the "0" position.
GPC 12x.1P and GPC32x.1U
When power is applied, the actuator coupling moves toward the open position
"90°". In the event of a power failure or when the operating voltage is shut off, the
actuator returns to the "0" position.
GPC13x.1P
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. A 24
Vac/dc control signal to wire 7 (Y2) causes the actuator coupling to rotate
counterclockwise.
With no control voltage, the damper actuator holds its position. In the event of a
power failure, the actuator will return to the 0 position.
Overload Protection
In the event of a blockage in the damper, the actuator is overload protected over
the full range to prevent damage to the actuator.
Life Expectancy
An improperly tuned loop will cause excessive repositioning that will shorten the
life of the actuator.