Non-Spring Return, On/Off Floating Point Actuator, 45 lb-in (100-240 VAC)

For On/Off and floating point 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 1/4" up to 5/8" in diameter by means of its standard universal clamp. Shafts up to 3/4" diameter can be accommodated by an accessory clamp.

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 LMX series provides 95 Degrees of rotation and a visual indicator which indicates position of the actuator. When reaching the damper or actuator end position, the actuator automatically stops. The gears can be disengaged with manual release on the actuator cover.

The LMX120-3 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.

• Power supply: nominal 100 to 240 VAC, 50/60 Hz / tolerance 85 to 265 VAC, 50/60 Hz
• Power consumption: 2 W (0.5 W)
• Transformer sizing: 4 VA (Class 2 power source)
• Electrical connection: 18 GA appliance rated cable / 1/2" conduit connector / protected NEMA 2 (IP54) / 3 ft [1m] 10 ft [3m] 16 ft [5m]
• Overload protection: electronic throughout 0 to 95 Degrees rotation
• Control: on/off, floating point
• Input impedance: 600
• Angle of rotation: max. 95 Degrees, adjustable with mechanical stop
• Torque: 45 in-lb [5 Nm]
• Direction of rotation: reversible with switch
• Position indication: reflective visual indicator (snap-on)
• Manual override: external push button
• Running time: 150, 95, 60, 45, or 35 seconds constant independent of load
• Humidity: 5 to 95% RH non condensing (EN 60730-1)
• Ambient temperature: -22F to 122F [-30C to 50C]
• Storage temperature: -40F to 176F [-40C to 80C]
• Housing: NEMA 2, IP54, UL enclosure type 2
• Housing material: UL94-5VA
• Agency listings: cULus acc. to UL 60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EEC and 2006/95/EC
• Noise level: <35dB(A)
• Servicing: maintenance free
• Quality: standard ISO 9001