Frequency inverter

The Movitrac LTE version B series of frequency inverters is suited to low-power variable-speed drive applications, such as small fans and pumps, machine tools and conveyors.

The inverter is available in two power ratings — units up to 2.2 kW (single-phase) and units up to 7.5 kW (three-phase) — and is available in three frame sizes rated to either IP20 or IP55.

The device features an integrated DIN rail snap-in mounting capability to simplify mechanical and electrical installation, four means of access for drive configuration, monitoring and control, built-in RS485 port for PC access, infrared link to pocket PC or smart phone and optional portable programming stick for multi-drive parameter transfer.

The device is equipped with an energy optimiser function, which enables the drive to automatically match the applied motor voltage (hence torque) with the load conditions — the drive uses only what it needs, claimed to provide an advantage over conventional ‘variable torque’ control strategies, in that higher starting torques can be achieved.

The device can be connected to industrial fieldbus-based communications systems via a gateway, which can be connected to the inverter’s integrated RJ-45 connector, enabling implementation of communications protocols, including Profibus, DeviceNet, Ethernet IP, ProfiNet, ModbusIP and EtherCat.