How does the electric drive work with sliding shutters?
Sliding shutter elements
The electric drive for sliding shutters usually consists of several components
- An electric motor, usually 24V direct current
- An associated control unit
- A toothed belt and associated accessories such as pulleys and belt clamps
The toothed belt is guided in a cycle from one side of the sliding shutter to the other. The toothed belt is driven by the toothed wheel on the motor, on the other side by the idler pulley. The belt clamp connects the two ends of the toothed belt. This belt clamp is also connected to the sliding shutter itself so that the belt clamp connects the toothed belt to a cycle and transmits the movement of the toothed belt to the sliding shutter.
The control unit is used to operate the motor. A power supply unit is generally integrated into the control unit, which generates 24V direct current from the 230V supply voltage. The control unit switches this voltage to the motor as required.
The control has various functions, including the so-called force cut-off. This ensures that the sliding shutter is only operated until a defined force is reached. Then the system switches off.
On the one hand, this is used to switch off in the end positions, thus eliminating the need for limit switches. But the force cut-off also plays an essential role in terms of safety. If persons or objects are in the range of movement of the sliding shutter, the drive switches off when a specific force is reached. This protects not only the persons but also the sliding shutter system.