Belimo Aircontrols (USA), Inc. LF24-SR-E US LF Series Direct Coupled Spring Return Actuator, 35 in-lb minimum torque

SKU: LF24SREUS
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List Price$736.00
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LF Series Direct coupled spring return actuator, 35 in-lb minimum torque

ApplicationFor fail-safe, modulating control with minimum position setpoint, or three position control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer?s specifications. The actuator is mounted directly to a damper shaft from 3/8? up to 1/2? in diameter by means of its universal clamp, 1/2? shaft centered at delivery. For shafts up to 3/4? use K6-1 accessory. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft. The actuator operates in response to 24 VAC on wire 2 or 3, which allows the LF24- SR-E US to retrofit or replace Honeywell? M8405A actuators. A 2 to 10 VDC feedback signal is provided for position indication.
Weight3.3 lb [1.5 kg]
Servicingmaintenance free
Power Supply24 VAC � 20%, 50/60 Hz, 24 VDC � 10%
Power Consumption Running2.5 W
Power Consumption Holding1 W
Transformer Sizing5 VA (class 2 power source)
Electrical Connection3 ft [1 m], 18 GA plenum cable with 1/2? conduit connector
Overload Protectionelectronic throughout 0� to 95� rotation
Input Impedance100 k ?
Angle of Rotationmax. 95�, adjustable with mechanical stop
Direction of Rotation (Motor)reversible with built-in switch
Running Time (Motor)150 sec constant, independent of load
Ambient Temperature Range-22�F to +122�F [-30�C to +50�C]
Storage Temperature Range-40�F to +176�F [-40�C to +80�C]
HousingNEMA 2, IP54
Agency ListingscULus acc. To UL 873 and CAN/CSA C22.2 No. 24-93
Noise Level (Motor)<30 dB (A)
Quality StandardISO 9001
Operating Range Y2 to 10 VDC, 4 to 20 mA w/ ZG-R01 (500 ?, 1/4 W resistor) between 0% and 100%
Direction of Rotation (Fail-Safereversible with CW/CCW mounting
Position Indicationvisual indicator, 0� to 95� (0� is full spring return position)
Running Time (Fail-Safe)<25 sec @ -4�F to 122�F [-20�C to 50�C], < 60 sec @ -22�F [-30�C]
Noise Level (Fail-Safe)<62 dB (A)
Feedback Output U2 to 10 VDC (max 0.7 mA) for 95�
Housing Materialzinc coated steel
Electrical protectionactuators are double insulated
Override ControlMinimum, Open, Closed via spring Minposition adjusts on actuator cover between 0 and 100% (scaled 0 to 1)
Humiditymax. 95% RH non-condensing
Shaft Diameter3/8? to 1/2? round, centers on 1/2?
Torque35 in-lbs [4 Nm] minimum
SH8Push rod for KG6 & KG8 ball joints (36? L, 5/16? diameter)
ZG-DC1Damper clip for damper blade, 3.5? width.
ZG-DC2Damper clip for damper blade, 6? width.
ZS-100Weather shield - galvaneal (13? L x 8? W x 6? D).
ZS-150Weather shield - PC w/ foam seal (16? L x 8-3/8? W x 4? D).
ZS-260Explosion proof housing.
ZS-300NEMA 4X, 304 stainless steel enclosure.
TOOL-068 mm and 10 mm wrench
PS-100Actuator power supply and control simulator.
SGA24Positioner control for modualting actuators (surface mount)
SGF24Positioner control for modulating actuators (flush mount)
ADS-100Analog to digital switch for modulating actuators.
ZG-R014 to 20 mA adaptor, 500�, 1/4 W resistor w 6? pigtail wires.
ZG-X40120 to 24 VAC, 40 VA transformer
PTA-250Pulse width modulation interface for modulating actuators
IRM-100Input rescaling module for modulating actuators.
KG8Ball joint for 5/16? diameter rod, 90�, galvanized steel.
KG10ABall joint for 3/8? diameter rod, zinc plated
SH10Push rod for KG10A ball joint (36? L, 3/8? diameter).
ZG-R0250% voltage divider kit (resistors with wires).
ZG-SGFMounting plate for SGF.
ZG-109Right angle bracket for ZS-260.
ZG-110Stand-off bracket for ZS-260
ZS-101Base plate for ZS-100
ZS-300-5NEMA 4X, 316L stainless steel enclosure
ZS-300-C11/2? shaft adaptor, standard wtih ZS-300(-5)
ZS-300-C23/4? shaft adaptor for ZS-300(-5).
ZS-300-C31? shaft adaptor for ZS-300(-5).
KH12Univ. crankarm, slot 21/64? w, for 3/4? to 1? dia. shafts.
KH8Univ. crankarm,slot 21/64? w,for 3/8? to 11/16? dia. shafts
20477-00001Honeywell logic module bracket.
AV6-206.7? shaft extension for 1/4? to 3/4? diameter shafts
IND-LFLF position indicator.
K6 USStandard LF clamp (3/8? to 1/2?).
K6-1LF clamp (1/2? to 3/4?).
KG6Ball joint for 5/16? diameter rod, zinc plated.
KH6Univ. crankarm, slot 1/4? w, for 3/8? to 11/16? dia. shafts.
KH-LFLF crankarm (with 1/2? diameter shaft pass through).
KH-LFVV-bolt Kit for KH-LF
LF-PAnti-rotation bracket LF
ZDB-LFAngle of rotation Limiter for LF.
ZF8-LF8x8 mm form fit adaptor for LF.
ZG-112LF right angle bracket (4-1/2? H x 5-1/2? W x 2-1/2? D).
ZG-LF112LF crankarm adaptor kit (includes ZG-112).
ZG-LF2LF crankarm adaptor kit (T bracket included)
ZG-LMSA-1Shaft extension for 3/8? diameter shafts (4? L)
ZG-LMSA-1/2-5Shaft extension for 1/2? diameter shafts (5? L)
ZG-ECON1Honeywell ECON retrofit kit with module bracket
ZG-ECON2Honeywell ECON retrofit kit without module bracket.
OperationThe LF series actuators provide true spring return operation for reliable fail-safe application and positive close-off on air tight dampers. The spring return system provides constant torque to the damper with, and without, power applied to the actuator. The LF series provides 95� of rotation and is provided with a graduated position indicator showing 0 to 95�. The LF24-SR-E US uses a brushless DC motor which is controlled by an Application Specific Integrated Circuit (ASIC) and a microprocessor. The microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuator?s exact position. The ASIC monitors and controls the brushless DC motor?s rotation and provides a digital rotation sensing function to prevent damage to the actuator in a stall condition. The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches. Power consumption is reduced in holding mode. See wiring diagrams for LF24-SR-E US for more details on 3-position control.
Typical SpecificationSpring 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 a 1/2? shaft. 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 500? resistor, a 4 to 20 mA control input from an electronic controller. Actuator must have a built-in minimum position potentiometer. During 3-position control, the actuator shall drive to a minimum position with 24 VAC on wire 2 and drive full open with 24 VAC on wire 3. 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.

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LFC243RUS LF Series Direct Coupled Spring Return Actuator, 35 in-lb minimum torque Belimo Aircontrols (USA), Inc. $310.50 0    Add To Cart
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