Description:
Belimo’s SY series electric actuators have been designed to
mate with our HD(U), Grooved and SHP… series butterfly
valves and other quarter turn valve applications.
The patented gear drive mechanism provides for efficient, smooth
operation while allowing easy manual override at any time. Drawing
upon years of experience in the actuation industry, we have
incorporated the most desirable features into the SY product range.
All units have NEMA 4X ratings, easily visible position indicators,
international standard ISO5211 mounting systems, internal thermal
motor overload protection, heater, dual auxiliary Form C switches, and
easily accessible wiring termination points. Wiring diagrams, included
in all printed documentation, are also affixed to the outside of
the housing on the permanently attached product label.
The SY actuators are NEMA 4, 4x rated and designed to meet the needs of HVAC and Commercial applications. Offered on the HSU and HS butterfly valve series, these actuators are available for on/off and modulating applications. Depending on the application, they are available in 24 VAC, 120 VAC and 230 VAC. The SY series actuators are fractional horsepower devices, and utilize half-wave power supplies. Observe wire sizing and transformer sizing requirements
Hand Wheel Override
Electrical connection: 1/2" conduit connector, screw terminals
Motor protection: F Class
Gear train: high alloy steel gear sets, self locking
Operating range: 2-10 VDC, 4-20mA, 0-10 VDC
Sensitivity: 0.4mA/200mV
Reversal hysteresis: 1.0mA/500mV
Feedback: 2-10 VDC
Angle of rotation: 90°
Direction of rotation: reversible
Position indication: top mounted domed indicator
Internal humidity control: resistive heating element
Auxiliary switches: (2) SPDT, 5A 250 VAC factory set for 5° and 85° change of state
Ambient temperature: -22°F to +150°F [-30°C to +65°C]
Humidity range: up to 95%
Housing type: IP67, NEMA 4X
Housing material: die cast aluminum alloy
Agency listings: ISO, CE, cCSAus