Intelli-shade | February 2022

The main criteria for selecting the right motor for blinds is based on carrier products, operation noise level (from silent motors to regular motors), and ceiling height (double height or single height).

1. Selection Criteria

The carrier product such as Roller blind, Roman blind… etc, weight of the blind, and the size of head rail varies. It affects the motor torque which is the weight carrying capacity, diameter, and speed that can be selected. 

Typical torque ranges, motor diameter and speed recommended for different carrier products that cover the majority of sizes are given below:

 

 

2. Typical Mounting Detail

Typical Pelmet Size

Basically, it depends on shaft diameter by window height. Wire type roll screen requires more space for wire installation. In that case, the shaft is thicker than normal type, hence a bigger pelmet is needed with thick shaft for tall windows. 

 

3. Noise Level

Most of Somfy motors for internal blind is below 50dBA. It is almost lower than the noise of a quiet office. Sonesse motor, which is the most famous of Somfy product, is as quiet as library or a quiet house at 42dBA of noise level. Somfy also has Ultra Quiet motor which is very silent by far reaching as low as 38dBA.