Data Sheet for Product

Technical Instructions SKD Electronic Valve Actuator 3-Position (Floating) Control
Document No. 155-181P25
September 25, 2018
Page 2 Siemens Industry, Inc.
Warning/Caution Notations
WARNING:
Personal injury or loss of life may occur if you do
not perform a procedure as specified.
CAUTION:
Equipment damage or loss of data may occur if
you do not perform a procedure as specified.
Specifications
Power supply
Operating voltage 24 Vac 20%
Frequency 50/60 Hz
Power consumption
SKD82.50U 13 VA/8W
SKD82.51U 18 VA/11W
Control signal 3-position (floating)
Equipment Rating
Rating Class 2 according to UL, CSA
Function
Nominal stroke 3/4-inch (20 mm)
Run time with control operation (full stroke)
SKD82.50U
Power stroke, 0 to 100% 120 seconds
Return stroke, 100 to 0% 120 seconds
Run time with control operation (full stroke)
SKD82.51U
Power stroke, 0 to 100% 120 seconds
Return stroke, 100 to 0% 120 seconds
Fail-safe 8 seconds
Nominal Force
Stroke
Force
NC and 3-way upper
0%
225 lb (1000 N)
NO and 3-way bypass
100%
258 lb (1150 N)
Housing
NEMA Rating NEMA 1 (interior only)
See Accessories.
Agency certification
C-UL Certified to Canadian standard
C22.2 No. 24-93
Ambient conditions
Ambient temperature (Operation) 5°F to 122°F (-15°C to 50°C)
Media temperature -13°F to 300°F (-25°C to 150°C)
Miscellaneous
Dimensions See Figure 14 and Figure 15.
Conduit opening 1/2-inch NPSM
Weight 7.5 lb (3.4 kg)
Accessories
Figure 1. Stem Heating Element.
ASZ6.6 The stem heating element
prevents the formation of ice on the stem
when the medium temperature drops
below 32°F (0°C). It is suited for universal
use with valves having a stem or spindle
diameter of 10 or 14 mm.
Operating voltage 24 Vac/dc ± 20%
Power consumption ≤ 40 VA/30W