Product Spotlight, Motors and Drives, August 2013

The VLT HVAC basic drive is a variable-speed-drive solution optimized for basic fan and pump operations. The compact drive minimizes wear on HVAC equipment, maximizes system uptime and productivity, and reduces system operating costs. Built-in features reduce or eliminate the need for additional external equipment, including gateways, PI controllers, and PLCs. Integrated DC coils reduce harmonics, and an automatic energy optimizer and sleep-mode function save energy and extend drive life. —DanfossMotor starters

The Z1000 variable-speed drive is designed for building-automation-system (BAS) applications such as fans, pumps, and cooling towers through 500 hp. It features an easy-to-read LCD keypad that provides hand/off/auto interface and a real-time clock. The Z1000 bypass package is optimized with an intelligent bypass and an advanced BAS interface. The intelligent pypass can transfer the motor across the line when the application requires 60 Hz at peak demand. Removing the drive at 60 Hz saves energy and removes harmonics in worst-case conditions. —Yaskawa