Proper connection and setup of the control unit is essential to ensure the safe and efficient operation of a motorized shutter. In this guide, we will explain step by step how to perform the electrical connections of the control unit and configure the main settings.
1. Understanding the Control Unit
The control unit is the brain of the motorized system, responsible for managing the opening, closing, and safety commands of the shutter. It consists of various terminal blocks, each with a specific function.
Main connections of the control unit:
- 230 Volt line: Main power supply.
- Motor connections: For the three phases (open, common, and close).
- Safety contacts: Connected to devices such as photocells.
- Accessory options: Such as courtesy light or flashing light.
- Command button: Connection for buttons or switches.
2. Connections on Terminal Block 1
The main terminal block (Terminal Block 1) manages the fundamental connections:
- Power supply:
- Use the first two terminals to connect the 230 Volt line.
- Motor connections:
- Connect the three motor cables to the terminals:
- Open: For the opening movement.
- Common: The shared common phase.
- Close: For the closing movement.
- Connect the three motor cables to the terminals:
- Safety contacts and accessories:
- Connect optional devices such as:
- Courtesy light or flashing light: Can be connected to the last two terminals.
- Safety contacts: For additional protections like anti-drop systems.
- Connect optional devices such as:
3. Connections on Terminal Block 2
Terminal Block 2 is dedicated to safety devices and system control.
- Photocells:
- The first two terminals provide 12 Volt AC power for the photocells.
- Common contact (D):
- This terminal serves as a central point for connections of photocells and the start button (command button).
- Command button:
- Connect the button to terminals D (common) and E (start) with a NO (Normally Open) contact, without voltage.
- The button can be configured for different modes:
- Step-by-step: A click starts or stops the movement.
- Hold-to-run: Movement occurs only while holding the button.
Important note: Never connect the button in parallel on the motor wires. The control unit autonomously manages opening, closing, and stopping.
4. Configuring the Photocells
If you are using the photocells:
- Connect the wires to the dedicated terminals on Terminal Block 2.
- Ensure they are properly powered by the control unit.
If you are not using the photocells, it is necessary to create a jumper between terminals C (photocell) and D (common) using a NC (Normally Closed) contact. This step prevents malfunctions and allows the control unit to operate correctly.
5. Final Tests and Adjustments
- Verify the connections:
- Check that all cables are securely connected to the correct terminals.
- Ensure there are no short circuits or incorrect connections.
- Configure the modes:
- Set the behavior of the button (step-by-step or hold-to-run) as needed.
- Adjust the control unit settings according to the motor manual specifications.
- Perform a complete test:
- Test the opening and closing movement.
- Check the function of accessories, such as the courtesy light or flashing light.
- If used, ensure the photocells respond correctly to obstacles.
6. Tips for Correct Installation
- Safety first: Before starting any operation, make sure the power line is disconnected to avoid risks.
- Clean contact buttons: Always use NO contacts without voltage for buttons, avoiding direct connections to the motor.
- Technical documentation: Refer to the BIG motor manual for specific details and electrical diagrams.
- Rely on professionals: If you have no experience with electrical connections, seek the help of a qualified installer.
