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SSD Series Electronic Valve Actuators
Siemens
Product Guard
Warranty
24 Vac, Floating or 0 to 10 Vdc Control
Spring Return and Non-Spring Return
PICV
SSD Series Spring Return
Electronic Valve Actuator.
Description
Pressure Independent Control Series SSD Electronic
Valve Actuators require a 24 Vac power supply and receive
a oating control signal (SSD81…) or a proportional 0 to
10 Vdc signal (SSD61…) to control a valve. The 0 to 10V
SSD61U actuator also accepts a 24 Vdc power supply.
These actuators are designed to work with 1/2- to
1-1/4 inch normally open and normally closed Pressure
Independent Control Series Valves with a 2.5 mm or 5 mm
stroke and a threaded valve bonnet that ts the actuator.
Features
• Floating or 0 to 10 Vdc control
• Spring return and non-spring return variants
• Automatic stroke calibration on the SSD61…
• Reduced power consumption in holding position
• Direct coupled installation; actuators mount on valves
without tools or any adjustments required
• Manual override
• Visual position indication
• UL listed for plenum installation
• Maintenance-free, electromotoric actuator
• Plenum cable or 3/8" ex conduit connections
SSD Series Non-Spring Return
Electronic Valve Actuator.
Applications
For use in heating and cooling HVAC applications with
Pressure Independent Control valves that require >56 lbs.
(250N) actuator force.
A-85
Valves
Siemens
Product Guard
PLUS 3 Warranty
www.usa.siemens.com/hvac
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SSD Series Electronic Valve Actuators Specifications
A-86
Valves
Operating Voltage
Vac .................................................................................... 24 Vac ±20%
Vdc (SSD61U only) ........................................................... 24 Vdc ±25%
Frequency ...................................................................................50/60 Hz
Power Consumption (Normal Operation)
SSD81U .............................................................................. 0.8 VA max.
SSD61U .............................................................................. 2.5 VA max.
SSDx1.5U........................................................................................ 2 VA
Control signal
SSD81… ...................................................................................Floating
SSD61… ............................................................................. 0 to 10 Vdc
Run Time 5 mm Stroke 2.5 mm Stroke
SSD81U 150 Seconds 75 Seconds
SSD61U 90 Seconds 45 Seconds
SSD81.5U 125 Seconds 70 Seconds
SSD61.5U 30 Seconds 15 Seconds
Spring Return 5 mm Stroke 2.5 mm Stroke
SSD81.5U 30 Seconds 15 Seconds
SSD61.5U 30 Seconds 15 Seconds
SSD Series Actuator Product Ordering
Actuator
Description Part No.
Non-Spring Return
Floating SSD81U 230
0 to 10 Vdc SSD61U 231
Spring Return
Floating SSD81.5U 232
0 to 10 Vdc SSD61.5U 233
Prex Code
Nominal Stroke .............................................. 5 mm
Nominal Force
SSD81U, SSD61U ....................................................... >56 lbs. (250N)
SSDx1.5U ..................................................................... >67 lbs. (300N)
Agency Approvals
UL .................................................................................................UL873
cUL .............................Certied to Canadian Standard C22.2 No. 24-93
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
Accessories & Service Kits
www.usa.siemens.com/hvac
A-257
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Dimensions
SSD Series Spring Return Actuator
3.0
(75)
3.8
(96.4)
2
(48)
.85
(21,6)
4.5
(115,1)
5.5
(140)
3-1/4
(82)
SSD Series Non-Spring Return Actuator
2-7/8
(73)
1-7/8
(48)
3-1/4
(83)
Dimensions shown in inches (mm).
A-87
Valves
www.usa.siemens.com/hvac
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