MODULATING, NON-SPRING RETURN, 24 V, 135 Ω INPUT. TORQUE MIN. 180 IN-LB, FOR CONTROL OF DAMPER SURFACES UP TO 45 SQ. FT.
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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 up to 1.05” in diameter by means of its universal clamp. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft.
The default parameters for 0 to 135Ω input applications of the …MFT95 actuator are assigned during manufacturing. If necessary, custom versions of the actuators can be ordered. The parameters can be changed by two means: pre-set and custom configurations from Belimo or on-site configurations using the Belimo PC-Tool software.
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 actuator 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 actuators use a 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.
For low ambient temperatures, the optional supplemental (-H) Heater add-on is available.
||24 VAC, ±20%, 50/60 Hz, 24 VDC, ±10%
|Power consumption in operation
|Power consumption in rest position
||6 VA (class 2 power source)
||1/2...1.05” round, centers on 1/2” and 3/4” with insert, 1.05” without insert
||18 GA plenum cable with 1/2” conduit connector, degree of protection NEMA 2 / IP54, 3 ft [1 m] 10 ft [3 m] and 16ft [5 m]
||electronic throughout 0...95° rotation
||0...135 Ω, Honeywell Electronic Series 90, input 0...135 Ω
||2...10 V, Max. 0.5 mA
|Angle of rotation
||Max. 95°, adjustable with mechanical stop
||180 in-lb [20 Nm]
|Direction of motion motor
||selectable with switch 0/1
||Mechanically, 30...65 mm stroke
||external push button
|Running Time (Motor)
||default 150 s, variable 90...350 s
||max. 95% r.H., non-condensing
|Degree of Protection
||IP54, NEMA 2, UL Enclosure Type 2
||cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2014/30/EU and 2014/35/EU
|Noise level, motor