Siemens SSD81U, Технические инструкции

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Technical Instructions Pressure Independent Control
Document No. 155-773 SSD Series Electronic Valve Actuators
September 1, 2015
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 13 and Figure 14.
Weight
SSDx1U 12.3 oz. (0.35 kg)
SSDx1.5U 1.3 lbs. (0.6 kg)