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LMX24-SR-T Damper Rotary, 45in-lb, SR(2-10V), 24V

Belimo Damper Actuator - Damper Rotary, 45in-lb, SR(2-10V), 24V


- Damp. Rotary
- 45in-lb
- SR(2-10V)
- 24V

Usually Ships: 3 - 5 Days

Availability: In stock



For proportional modulation 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 1/4” up to 5/8” in diameter by means of its universal clamp. Shafts up to 3/4” diameter can be accommodated by an accessory clamp.
The actuator operates in response to a 2 to 10 VDC, or with the addition of a 500 Ω resistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to 10 VDC feedback signal is provided for position indication or master-slave applications.

The actuator is not provided with and does not require any limit switches, but is electronically protected against overload. The anti-rotation strap supplied with the actuator will prevent lateral movement.
The LMB series provides 95° of rotation and a visual indicator indicates position of the actuator. When reaching the damper or actuator end position, the actuator automatically stops. The gears can be manually disengaged with a button on the actuator cover.
The LMB24-SR… actuators use a sensorless brushless DC motor, which is controlled by an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’s rotation and provides a digital rotation sensing (DRS) function to prevent damage to the actuator in a stall condition. Power consumption is reduced in holding mode.
Add-on auxiliary switches or feedback potentiometers are easily fastened directly onto the actuator body for signaling and switching functions.

Fail-Safe Non-Spring Return
Torque 45 in-lb [5 Nm]
Control Input 2-10 VDC
Input Impedance 100 kΩ (0.1 mA), 500 Ω
Position Feedback --
Running Time (motor) 95 seconds constant, independent of load
Running Time (fail-safe) --
Auxiliary Switch --
Power Supply 24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10%
Power Consumption 1.5 W,0.4 W
Transformer Sizing 3 VA (class 2 power source)
Electrical Connection 18 GA plenum rated cable with 1/2" conduit connector protected NEMA 2 (IP54) 3ft [1m] 10 ft [3m] and 16 ft [5m]
Overload Protection electronic throughout 0 to 95° rotation
Shaft Diameter --
Angle of Rotation max. 95°, adjustable with mechanical stop
Direction of Rotation (motor) reversible with switch
Direction of Rotation (fail-safe) --
Position Indication reflective visual indicator (snap on)
Manual Override external push button
Humidity 5 to 95% RH non condensing (EN 60730-1)
Ambient Temperature -22°F to +122°F [-30°C to +50°C]
Ambient Temperature (safety) --
Storage Temperature -40°F to +176°F [-40°C to +80°C]
Noise Level <35 dB (A)
Housing Material UL94-5VA
Housing NEMA 2, IP54, UL enclosure type 2
Agency Listing cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EEC and 2006/95/EC
Quality Standards ISO 9001
Weight 1.7 lbs (0.75 kg)

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