Posted
1 August 2008

Inverter drives

Supplier
Baldor Australia Pty Ltd
Online

The Baldor VS1MX family of drives is expected to help machine builders to reduce costs substantially in automation for common applications such as fan and pump control, as well as in clean area processing zones in the food and pharmaceutical industries.

The drive range includes both single-phase and three-phase versions, for motor control power requirements from 0.37 to 7.5 kW (0.5 to 10 hp). A Modbus RTU communications port is provided as standard.

The drives have been designed to be as simple as possible to apply. Every version can be supplied ready to use, with an integral EMC filter. Simple front panel mounted user interfaces allow any of the drives to be made operational in minutes. Although the drives come with a control language of 45 parameters — supporting the programming of quite complex applications — the first menu level presents a subset that allows the most common applications to be set up in a few minutes. These commands include motor voltage/current/frequency/speed, maximum/minimum speed, preset speed and acceleration/deceleration ramp.

Configuration programs can also be stored on a simple external memory stick type device and reloaded as required. A remote keypad may also be fitted to the drives, to simplify the layout and construction of automation.

Despite the focus on economy, the drives offer a V/Hz control algorithm that provides much tighter regulation of speed and greatly improves torque at low speeds — making the drives capable of starting up even high inertia loads.

The standard industrial version of the drive (protected to IP20) is DIN rail mounting. The two higher-specification versions are panel mounting and come with a built-in isolation mechanism that ensures that operators can switch the system to a safe state for maintenance purposes. The dust- and splash-proof version can also be ordered with a front panel mounted potentiometer, to provide a simple speed control mechanism for applications such as conveyors.