# Operation - Siemens OpenAir GDE Series Technical Instructions

Electric damper actuators, non-spring return rotary 24 vac - modulating control 0 to 10 vdc

Technical Instructions
Document Number: 155-187P25
November 30, 2005

## Operation

Life expectancy
Control signal
Page 6
A continuous 0 to 10 Vdc signal from a controller to wire 8 (Y) operates the damper
actuator. The angle of rotation is proportional to the control signal. A 0 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, the actuator holds its position. In the event that only
the control signal is lost, the actuator returns to the "0" position.
An improperly tuned loop will cause excessive repositioning that will shorten the life
of the actuator.
GDE/GLB163.1P and GDE/GLB164.1P: For sequencing and the electronic
limitation of the angle of rotation.
Use the Uo potentiometer to set the offset (start point) between 0 to 5 Vdc.
Use the ΔU potentiometer to set the slope (span) between 2 to 30 Vdc.
NOTE:
The Y input is limited to a maximum of 10 Vdc. If the sum of the offset and
slope setting is greater than 10V, the angle of rotation is reduced providing
the feature of electronic limitation of the angle of rotation.
Ys [%]
1)
100
0
2
5
10
Δ
Uw
Δ
U
O
Figure 10.
Ys
Actuator position (100% = angle of rotation
90°*)
Y
Control input signal
Uo
Offset (start point)
ΔU
Slope
ΔUw Active voltage range (Ys changes)
* When the mechanical limitation of the angle of
rotation and self-adapt function are ON, 100% does
not equal 90°.
Examples in Figure 3
1. Minimum slope
2. Limitation of rotation
3. Limitation of rotation
4. Setting shown in Figure 4
OpenAir Non-Spring Return Rotary Electric Damper Actuator
4)
30
U (max. 30 V)
Table 2.
ΔU
Uo
Offset
Slope
Vdc
Vdc
0
2
5
30
0
30
0
10
24 Vac – Modulating Control
Ys
Uo
U
V
SLOPE,
U
3)
2
10
2)
16
35
Y [V]
30
24
OFFSET,
Uo
0
1
2
3
5
4
Setting for
10V slope
0 Vdc offset
Figure 11.
Active Voltage
Range
Actuator
Vdc
Position
0 to 2
0 to 100%
5 to 10
0 to 16.7%
0 to 10
0 to 33.3%
0 to 10
0 to 100%
Siemens Building Technologies, Inc.
Ys