Leroy-Somer's range of electro-mechanical systems includes gearless drives for new lift installations, as well as for renovation projects that involve the upgrade of existing lifts.
"New gearless motors in Leroy Somer's range are XA motors that offer high performance solutions in machine roomless lift (MRL) applications and Z gearless drives for upgrade and renovation projects," says Grant Robertson, managing director of Leroy Somer South Africa.
Gearless XA motors, with an internal rotor, are compact and lightweight for easy installation in the lift well. The cigar type design of these motors makes them perfect for use in lift installations with a restricted pit depth. The overhanging traction sheave provides direct access to the grooves and simplifies installation of the cables. The reduced overhead design, due to axial disk brakes, means the motor can be fitted on a beam directly underneath the shaft ceiling.
Gearless Z motors, for new installations or upgrade projects, are designed for lifts with a payload of up to 5 000 kg and a speed of 5 m/s, with a 2:1 roping arrangement. This range, which can handle shaft loads of up to 22 T, has an external rotor and disk brakes on the sheave with manual release levers.
This range of permanent magnet synchronous motors is particularly suitable for high capacity lifts, or high speed applications requiring a double wrap. These motors can also be adapted for the requirements of each installation. Mechanical options for a customised solution include deflection sheaves with chassis, anti-vibration mounts and brake manual release levers. A dedicated electronic card, powered by a 24 VDC battery, can be used for emergency operations.
www.leroysomer.co.za