900 series0 pages
SERIES 900 ELECTRIC SPRING RETURN ACTUATORS
nnnnDescription
nnnnThe SERIES 900 Actuators are direct mount.
nnnnspring return electric actuators that operate
nnnnwith these available power options:
nnnn• AC 24 V at 50/60 Hz or DC 24 V
nnnn• AC120Vat60Hz
nnnn• AC 230 Vat 50/60 Hz
nnnnThese bidirectional actuators do not require a
nnnndamper linkage, and are easily installed on
nnnndampers with 1/2 to 3/4 in. or 12 to 19 mm
nnnnround shafts, or 3/8 and 1/2 in. or 10.12. and
nnnn14 mm square shafts using the standard shaft
nnnnclamp included with the actuator.
nnnnA single SERIES 900 Electric Spring Return
nnnnActuator provides a running and spring return
nnnntorque of 177 Ibin (20 Nm). Two or three
nnnnmodels mounted in tandem deliver twice or
nnnntriple the torque. Integral line voltage auxiliary
nnnnswitches are available on the 900 models to
nnnnindicate end-stop position, or to perform
nnnnswitching functions within the selected rotation
nnnnrange.
nnnnFeatures
nnnn• available torques of 177 Ib in (20 Nm) for
nnnnsingle actuators. 354 Ib in (40 Nm) for two
nnnnmodels, and 531 lb in (60 N m) for three
nnnnmodels mounted in tandem — offer a
nnnnselection that is most suitable for the
nnnnapplication
nnnn• reversible mounting design — simplifies
nnnninstallation and enables the actuator to
nnnnspring return in either direction
nnnn• electronic stall detection throughout entire
nnnnrotation range — extends the life of the
nnnnactuator by deactivating the actuator motor
nnnnwhen an overload condition is detected
nnnn• removable coupler — adapts to a shorter
nnnndamper shaft
nnnn• integral 48 in. (1.2 m) halogen-free cables
nnnnwith colored and numbered conductors —
nnnnsimplify field wiring
nnnn• integral auxiliary switches (900 Models) —
nnnnprovide one fixed and one adjustable switch
nnnnpoint with line voltage capability
nnnn• NEMA2 (IP54) rated aluminum enclosure
nnnn— protects the internal components of the
nnnnactuator from dirt and moisture
nnnn• easy-to-use locking manual override with
nnnnauto release and crank storage — allows
nnnnfor manual positioning of the actuator hub
nnnn• integral connectors for 3/8 in. flexible metal
nnnnconduit — simplify installation and field
nnnnwiring
nnnnApplications
nnnnThe SERIES 900 Electric Spring Return
nnnnActuators provide reliable control of dampers
nnnnand valves in Heating, Ventilating, and Air
nnnnConditioning (HVAC) systems. The
nnnnSERIES 900 Actuators are available for use
nnnnwith on/off, floating, and proportional
nnnncontrollers.
nnnnElectric Spring Return Actuator
nnnnSERIES 900
nnnnRepair Information
nnnnIf the SERIES 900 Electric Spring Return
nnnnActuators fails to operate within its
nnnnspecifications, refer to the
nnnnElectric Spring Return Actuators Product
nnnnBulletin for a list of repair parts available.
nnnnSelection Chart
nnnn-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 |