Description
SGA24 – BELIMO DAMPER POSITIONER
The Belimo SGA24 is intended for the remote control of modulating actuators or for use as a minimum positioner (providing a minimum limit for the output signal from a modulating controller). The control range is 0 to 100% of the angle of rotation of the actuator. Positioner SGA24 is for surface mounting with a NEMA 2 housing included. The positioner receives its supply voltage through terminals 1 and 2. A rotary knob is turned, producing a proportional control signal (Y) at the output (terminal 3) of either 0.5 to10Vdc or 2 to10Vdc and therefore a proportional change in the position of the actuator between 0 and 100%. When used for a minimum limit, the positioner works as a higher of 2 signal selector. This function allows only the signal from the controller or positioner, whichever is greater, to go to the actuator. The changeover from 2 to10V to 0 to10V is selected by means of a slide switch on the printed circuit board. The angle of rotation of the knob can be limited mechanically, by moving the adjustable stops under the knob.
Power Supply: 24 Vac ± 20% 50/60 Hz, 24 Vdc ± 10%
Transformer Sizing: 1 VA (class 2 power source)
Control Signal Y: 0.5 to 10 Vdc; 2 to 10 Vdc (switchable)
Power Output: Up to 10 Belimo actuators (1 mA max)
Electrical Connection: Screw terminals (14 ga. wire max)
Degree of Protection: NEMA 2
Humidity: 5 to 95% RH (non-condensing)
Housing: NEMA type 2, IP54
