900 series0 pages

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SERIES 900 ELECTRIC SPRING RETURN ACTUATORS

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Description

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The SERIES 900 Actuators are direct mount.

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spring return electric actuators that operate

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with these available power options:

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• AC 24 V at 50/60 Hz or DC 24 V

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• AC120Vat60Hz

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• AC 230 Vat 50/60 Hz

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These bidirectional actuators do not require a

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damper linkage, and are easily installed on

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dampers with 1/2 to 3/4 in. or 12 to 19 mm

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round shafts, or 3/8 and 1/2 in. or 10.12. and

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14 mm square shafts using the standard shaft

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clamp included with the actuator.

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A single SERIES 900 Electric Spring Return

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Actuator provides a running and spring return

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torque of 177 Ibin (20 Nm). Two or three

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models mounted in tandem deliver twice or

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triple the torque. Integral line voltage auxiliary

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switches are available on the 900 models to

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indicate end-stop position, or to perform

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switching functions within the selected rotation

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range.

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Features

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• available torques of 177 Ib in (20 Nm) for

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single actuators. 354 Ib in (40 Nm) for two

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models, and 531 lb in (60 N m) for three

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models mounted in tandem — offer a

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selection that is most suitable for the

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application

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• reversible mounting design — simplifies

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installation and enables the actuator to

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spring return in either direction

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• electronic stall detection throughout entire

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rotation range — extends the life of the

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actuator by deactivating the actuator motor

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when an overload condition is detected

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• removable coupler — adapts to a shorter

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damper shaft

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• integral 48 in. (1.2 m) halogen-free cables

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with colored and numbered conductors —

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simplify field wiring

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• integral auxiliary switches (900 Models) —

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provide one fixed and one adjustable switch

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point with line voltage capability

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• NEMA2 (IP54) rated aluminum enclosure

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— protects the internal components of the

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actuator from dirt and moisture

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• easy-to-use locking manual override with

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auto release and crank storage — allows

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for manual positioning of the actuator hub

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• integral connectors for 3/8 in. flexible metal

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conduit — simplify installation and field

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wiring

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Applications

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The SERIES 900 Electric Spring Return

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Actuators provide reliable control of dampers

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and valves in Heating, Ventilating, and Air

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Conditioning (HVAC) systems. The

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SERIES 900 Actuators are available for use

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with on/off, floating, and proportional

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controllers.

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Electric Spring Return Actuator

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SERIES 900

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Repair Information

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If the SERIES 900 Electric Spring Return

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Actuators fails to operate within its

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specifications, refer to the

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Electric Spring Return Actuators Product

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Bulletin for a list of repair parts available.

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Selection Chart

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-ode Number	Control Type	Auxiliary Switches	Power Requirements
900-455	Floating	None	AC 24 V at Mi'GO Hz or DC 24 V
900-763	Floating	rwo	AC 24 V at 50*0 Hz or DC 24 V
900-775	On/Off	None	AC 120 Vat 60 Hz
900 9S8	On/Off	Two	AC 120 Vat 60 Hz
900-223	On/Oft	None	AC 230 V at 50/60 Hz
900-909	On/Off	Two	AC 230 V at 50/60 Hz
900-009	On/Off	None	AC 24 V at 50*0 Hz or DC 24 V
900 004	Oni'Ott	Two	AC 24 V al 50'60 Hz oi DC 24 V
900-777	Proportional	None	AC 24 Vat 50«0Hz£>r DC 24 V
900-334	Proportional	Two	AC 24 V at 50/60 Hz or DC 24 V
900-885	Proportional w/Adjustabfe Zero and Span	None	AC 24 V at 50/60 Hz or DC 24 V
900-044	Proportional w/Adjustabte Zero and Span	Two	AC 24 V at 50/60 Hz or DC 24 V

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