Operation of a roller shutter

The roller shutter consists of a tubular motor:

An roller shutter consists of three parts:

- The "two-phase" tubular motor consisting of two windings and a capacitor
- A reducer for generating additional power
- Limit switches or stops switches

The roller shutter connects with these 4 cables:

- Line 1: go up (for example)
- Line 2: go down
- Neutral
- Earth

Line 1 and line 2 can never be connected together, otherwise the motor may be broken.

Wattcube Window schematic