1. Introduction
This manual provides essential instructions for the safe installation, operation, and maintenance of your Somfy LT50 506S2 Tubular Motor. Please read this manual thoroughly before installation and use, and retain it for future reference.
The Somfy LT50 506S2 is a robust tubular motor designed for various applications requiring automated movement, such as blinds, shades, or projection screens. It features a torque of 6Nm (53 in.lbs), a speed of 38rpm, and operates on 120V.
Important Note: The Somfy LT50 506S2 (Product Code #1032016) has been discontinued and is replaced by the Somfy LT50 506S2 Sonesse RH 6Nm 32rpm 120V (Product Code #1001812). This manual pertains to the original LT50 506S2 model.
2. Safety Information
Always observe the following safety precautions to prevent injury or damage to the product:
- Electrical Safety: Installation and wiring must be performed by a qualified electrician in accordance with all local and national electrical codes. Disconnect power before performing any service or maintenance.
- Mechanical Safety: Ensure all mounting hardware is securely fastened. Keep hands, hair, and loose clothing clear of moving parts during operation.
- Environmental Conditions: Do not expose the motor to moisture, extreme temperatures, or corrosive environments.
- Intended Use: Use this motor only for its intended purpose as described in this manual. Any unauthorized modifications or uses may void the warranty and create hazards.
- Children and Pets: Keep children and pets away from the operating area of the motorized application.
3. Setup and Installation
Proper installation is crucial for the motor's performance and longevity. Refer to the specific mounting instructions provided with your application (e.g., blind or shade system) for detailed steps.
3.1 Package Contents
Verify that all components are present before beginning installation:
- Somfy LT50 506S2 Tubular Motor
- Power Cable (attached)
- Mounting Brackets (may be supplied separately with the application)
- Crown and Drive Wheel (may be supplied separately with the application)
3.2 Motor Overview

Figure 1: End view of the Somfy LT50 506S2 motor, highlighting the round drive head where the crown and drive wheel attach.
The image above shows the drive head of the Somfy LT50 506S2 motor. This is where the crown and drive wheel are fitted to engage with the tube of your application (e.g., roller blind). The central opening is for the limit setting tool.
3.3 Mounting the Motor
- Attach the crown and drive wheel to the motor head. Ensure they are seated correctly.
- Insert the motor into the tube of your application. The drive wheel should fit snugly inside the tube.
- Mount the assembly into the chosen location using appropriate brackets. Ensure the motor is level and securely supported.
- Verify that the tube rotates freely without obstruction.
3.4 Electrical Wiring
The Somfy LT50 506S2 operates on 120V AC. Wiring must be performed by a qualified professional.
- Connect the motor's power cable to a suitable 120V AC power supply, typically through a wall switch or control system.
- Ensure proper grounding.
- Refer to the wiring diagram provided with your specific control system or switch for exact connections (Live Up, Live Down, Neutral, Ground).
3.5 Setting the Limits
Limit settings define the upper and lower stopping points of your application. This motor uses mechanical limit switches, typically adjusted with a specialized tool (often a small hex key or screwdriver) inserted into the holes on the motor head.
- Power On: Apply power to the motor.
- Identify Adjustment Screws: Locate the two adjustment screws on the motor head. One controls the upper limit, the other the lower limit. Consult your application's specific instructions to identify which screw corresponds to which limit.
- Set Upper Limit:
- Run the application upwards until it reaches the desired upper stopping point.
- Insert the adjustment tool into the corresponding screw and turn it slowly. Turning in one direction will extend the travel, the other will retract it. Adjust until the motor stops precisely at the desired upper position.
- Set Lower Limit:
- Run the application downwards until it reaches the desired lower stopping point.
- Insert the adjustment tool into the corresponding screw and adjust until the motor stops precisely at the desired lower position.
- Test Limits: Cycle the application up and down several times to ensure the limits are set correctly and consistently.
4. Operating Instructions
The Somfy LT50 506S2 motor is typically controlled by a wall switch or a remote control system (sold separately).
4.1 Basic Operation (Wall Switch)
- UP Button: Press and hold to move the application upwards. Release to stop. If limits are set, a quick press may send it to the upper limit.
- DOWN Button: Press and hold to move the application downwards. Release to stop. If limits are set, a quick press may send it to the lower limit.
- STOP Button (if available): Press to immediately stop the application at its current position.
4.2 Remote Control Operation (if applicable)
If using a Somfy remote control, refer to the remote's specific instructions for pairing and operation. Generally, the remote will have dedicated buttons for Up, Down, and Stop functions, similar to a wall switch.
5. Maintenance
The Somfy LT50 506S2 motor is designed for minimal maintenance. However, periodic checks can ensure optimal performance.
- Cleaning: Keep the motor and surrounding area free from dust and debris. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
- Inspection: Periodically inspect the power cable for any signs of damage. Check mounting brackets for tightness.
- Lubrication: The motor is factory-lubricated and does not require additional lubrication.
- Professional Service: If the motor exhibits unusual noise, erratic operation, or fails to respond, contact a qualified service technician. Do not attempt to open or repair the motor yourself.
6. Troubleshooting
Before contacting support, review the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not respond. | No power supply. Faulty switch/remote. Motor overload protection activated. | Check power connection and circuit breaker. Test switch/remote. Disconnect power for 15 minutes, then retry. |
| Motor runs but application does not move. | Crown or drive wheel not properly engaged with the tube. Tube not properly secured to brackets. | Inspect and re-seat crown/drive wheel. Ensure tube is correctly seated in brackets. |
| Application stops before reaching limits. | Limits incorrectly set. Obstruction. | Re-adjust the limit settings (refer to Section 3.5). Check for any physical obstructions. |
| Motor makes unusual noise. | Internal mechanical issue. Obstruction. | Discontinue use and contact a qualified technician. Check for obstructions. |
7. Specifications
| Feature | Detail |
|---|---|
| Model | LT50 506S2 |
| Product Code | 1032016 |
| Brand | Somfy |
| Torque | 6 Nm (53 in.lbs) |
| Speed | 38 rpm |
| Voltage | 120V AC |
| Batteries Required | No |
| Discontinued | Yes (Replaced by LT50 506S2 Sonesse RH 6Nm 32rpm 120V, Product Code #1001812) |
8. Warranty & Support
For warranty information and technical support, please refer to the official Somfy website or contact your authorized Somfy dealer. Keep your purchase receipt as proof of purchase.
Online Resources: www.somfy.com





