Operation
Power supply of the controller is signaled by illumination of the green U LED. The roller shutter motor is activated by momentarily applying voltage (L or N) to one of the control inputs. The motor is switched on for a user-programmed time, allowing the shutter to be fully raised or lowered. The operation of the motor and the direction of the roller shutter's movement is signaled by the lighting of the corresponding red LED or . It is possible to stop the running roller shutter at the level selected by the user (incomplete opening or closing of the roller shutter).

Control inputs of the controller
Local control - a group of buttons connected to terminals 7 and 9 controlling one roller shutter.
- up (opening); - down (closing)
Pressing the local button activates the roller shutter for movement in the set direction. If the roller shutter is already in motion, pressing the local control button will stop the roller shutter.
Central control - common to multiple controllers (minimum two) a group of buttons connected to terminals 4 and 6 controlling all roller shutters that are in the central control system.
- all up; - all down
Pressing the central control button activates the roller shutters for movement in the set direction. If one of the roller shutters is already performing movement in the same direction, it will continue. If it performs movement in the opposite direction, the roller shutter will first be stopped and then switched on in the direction resulting from the command given to the central input.

NOTE!
Central control only allows you to switch on the roller shutters for movement in the selected direction. The roller shutter will be stopped only after the programmed time has elapsed, or after pressing any local control button.

Technical data

F&F STR-421 230V