Data Sheet for Product

Technical Instructions Pressure Independent Control
Document No. 155-773 SSD Series Electronic Valve Actuators
May 8, 2019
Page 2 Siemens Industry, Inc.
Ordering
Information
To order a complete valve plus actuator assembly from the factory, combine the
actuator prefix code with the suffix of the valve product number. To order an actuator
only, use the product number.
Specifications
Power supply
SSD81U
SSD61U
SSDx1.5U
Operating voltage Vac
24 Vac 20%
24 Vac 20%
24 Vac 20%
Frequency
50/60 Hz
50/60 Hz
50/60 Hz
Operating voltage Vdc
—
24 Vdc ±25%
—
Power consumption
Normal operation
At ultra cap load
0.8 VA max.
—
2.5 VA max.
—
2 VA
3 VA
Control Characteristics
SSD81…
SSD61…
Control signal
Floating
0 to 10 Vdc
Output impedance
—
>100K ohm
Positioning accuracy 0 to 10 Vdc
—
<2% of
nominal stroke
Function
SSD81U
SSD61U
SSD81.5U
SSD61.5U
Run time (in seconds)
2.5 mm stroke
75
45
70
15
5/5.5 mm stroke
150
90
125
30
Spring return (in seconds)
2.5 mm stroke
—
—
15
15
5/5.5 mm stroke
—
—
30
30
Nominal force
>56 lbs.
(250N)
>56 lbs.
(250N)
>67 lbs.
(300N)
>67 lbs.
(300N)
Capacitor charge time
(in seconds)
—
—
180 max.
180 max.
Spring return
(SSDx1.5U only)
—
—
Non-mechanical,
electronic. Returns to stem
up (0 position).
Agency Certification
UL Listed to UL873
cUL Certified to Canadian Standard
C22.2 No. 24-93
Ambient Conditions
Ambient temperature
Operation 41°F to 122°F (5°C to 50°C)
Transport/Storage -13°F to 158°F (-25°C to 70°C)
Humidity
Operation 5 to 85% rh
Transport <95% rh
Storage 5% to 95% rh
Miscellaneous
Dimensions See Figure 14 and Figure 15.
Weight
SSDx1U 12.3 oz. (0.35 kg)
SSDx1.5U 1.3 lbs. (0.6 kg)