Typical Specification
Spring return control damper actuators shall be direct coupled type which
require no crank arm and linkage and be capable of direct mounting to a
shaft up to a 3/4” diameter and center on a 1/2” shaft (default). Actuator shall
deliver a minimum output torque of 35 in-lbs. The actuator must provide
modulating damper control in response to a 2 to 10 VDC or, with the addition
of a 500Ω resistor, a 4 to 20 mA control input from an electronic controller.
Actuators shall use a brushless DC motor controlled by a microprocessor
and be protected from overload at all angles of rotation. Run time shall be
constant, and independent of torque. A 2 to 10 feedback signal shall be
provided for position feedback. The actuator must be designed so that they
may be used for either clockwise or counter clockwise failsafe operation.
Actuators shall be cULus listed, have a 5 year warranty, and be manufactured
under ISO 9001 International Quality Control Standards. Actuators shall be as
manufactured by Belimo.
Wiring Diagrams
!
WARNING! LIVE ELECTRICAL COMPONENTS!
During installation, testing, servicing and troubleshooting of this
product, it may be necessary to work with live electrical components.
Have a qualified licensed electrician or other individual who has been
properly trained in handling live electrical components perform these
tasks. Failure to follow all electrical safety precautions when exposed to
live electrical components could result in death or serious injury.
Meets cULus requirements without the need of an electrical ground
connection.
Provide overload protection and disconnect as required.
Actuators may also be powered by 24 VDC.
Only connect common to negative (-) leg of control circuits.
A 500 Ω resistor (ZG-R01) converts the 4 to 20 mA control signal to 2
to 10 VDC.
Actuators may be connected in parallel if not mechanically linked. Power
consumption and input impedance must be observed.
LF24-SR US - Damper Actuator
Modulating, Spring Return, 24 VAC/DC, for 2 to 10 VDC or 4 to 20 mA Control Signal
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Date created, 11/29/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.
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