Description

The Series 72 Modutrol IV Motors are used to control dampers and valves. The motors accept a current or voltage signal from an electronic controller to position a damper or valve at any point between open and closed. Description FEATURES Replaces M744S,T,Y and M745S,T,Y Motors. M7261, M7274, M7281, M7284, and M7294 are non-spring return motors; M7272, M7282, M7285, and M7286 are spring return motors. Oil immersed motor and gear train for reliable performance and long life. Wiring box provides NEMA 3 weather protection. Actuator motor and circuitry operate from 24 Vac. Models available with factory installed transformer or an internal transformer can be field added. Quick connect terminals standard—screw terminal adapter available. Adapter bracket for matching shaft height of older motors is standard with replacement motors. Nominal timing of 30 seconds for 90° stroke and 60 seconds for 160° stroke. Valve and damper linkages, explosion-proof housing, and auxiliary switches available as accessories. Spring return motors are rated for 25 lb.-in. and 60 lb.-in torque. Non-spring return motors are rated for 35 lb.-in., 75 lb.-in., 150 lb.-in., and 300 lb.-in. torque. Models available with adjustable start (zero) and span. Models available with 4 to 20 mA input signal. Models available with 2 to 10 Vdc input signal. Die-cast aluminum housing.