New lift inverter drives

New series lift inverter drives are built to achieve even higher efficiency levels

Gefran’s new and exclusively designed ADL and AVRy lift drive inverters cover entry-level to advanced performance for power ranges up to 90 kW with a strong emphasis on energy efficiency and application versatility. Designed with over 40 years of experience in civil lift engineering, the new drives offer reduced energy consumption and reduced CO2 emissions across the range with regenerative ‘clean energy’ power recovery technology available with the AVRy versions.

When compared to other lift drive designs, the ADL series can increase system speed and reduce energy consumption and costs by up to 48% as well as reduce CO2 emissions by up to 1000 Kg/year. AVRy regenerative drives can further reduce energy consumption by an additional 42% - for total savings of up to 90% - with CO2 emissions reduction up to 6000 Kg/year.

The ADL100 series features an advanced sensorless vector control to provide a cost effective solution for geared lift applications with speeds to 1.2 m/sec and use with asynchronous induction motors. The modular design includes a simplified I/O configuration but includes full featured lift control capability with integrated braking control and wireless remote interfacing for Bluetooth devices. An integrated RS232 serial communications port is also included with Modbus RTU protocol and set-up/diagnostics made easy with a PC programming wizard or an optional multilingual keypad.

The ADL 200 series builds on these features with advanced characteristics for geared or gearless lift systems in standard or machine room-less installations with asynchronous induction motors or synchronous brushless motors. The versatile ADL200 series is based upon an advanced 32-bit hardware platform with a wide range of pre-defined drive configurations plus interfaces for multilevel I/O control and encoder options which include incremental, sinusoidal and EnDat absolute. In addition a wide choice of communications fieldbus options ensure maximum interfacing capability.

Gefran’s AVRy series inverters feature built-in ‘clean energy’ power recovery technology for reduced operating system costs and energy savings for geared and gearless lift systems with Synchronous or Asynchronous motor ratings to 15 kW and speeds to 5 m/sec.

All Gefran lift drives are built for maximum lift cabin operational flexibility and extreme levels of comfort for lift passengers. Motor control includes space vector modulation for whisper quite operation and dedicated elevator features include smooth start, multi-speed, braking, output contactor and door control functions. Gefran lift drives also include controls for independent management of short floors and position controls for storing floor distances.