3-Point Controller
3-point Controller 1286 & 1289
The E-Module type series 1286 and 1289 is for the manual or automatic setting or control of motorized valves, hence for GEMÜ type series 413/418, 613/618 and 693/698.
The valve adjustment "open" and "closed" is initiated by a relay. This energizes the valve actuator until the differences between the actual and the required valve setting is less than the control hysteresis, i.e. it readjusts the valve position.
Over the whole of the control range, switching points are adjustable as minimum and maximum values by means of a potentiometer. These points are indicated by LED’s and the presence of the supply voltage is also indicated by a mains LED.
3-point Controller 1281 & 1284
The E-Module type series 1281 and 1284 is for the manual or automatic setting or control of motorized valves, hence for GEMÜ type series 413/418, 613/618 and 693/698.
The valve adjustment "open" and "closed" is initiated by a relay. This energizes the valve actuator until the differences between the actual and the required valve setting is less than the control hysteresis, i.e. it readjusts the valve position.
Over the whole of the control range, switching points are adjustable as minimum and maximum values by means of a potentiometer. These points are indicated by LED’s and the presence of the supply voltage is also indicated by a mains LED