Energy-efficient variable speed drives suit HVAC needs

Energy-efficient variable speed drives suit HVAC needs

Yaskawa America Inc.'s Drives and Motion Division announces the Z1000 family of HVAC drives. The new family includes the Z1000 variable speed drive as well as the Z1000 Bypass Package designed specifically for commercial HVAC applications.

The Z1000 Variable Speed Drive is designed for building automation applications such as fans, pumps, and cooling towers through 500 hp. Its features include an easy-to-read LCD operator with Hand-Off-Auto functions and an internal real-time clock with time/date stamping and timer controls that allow for speed variations without the need for external controls.

Further, a built-in 5% line impedance reduces input harmonic distortion, while a 5 kHz carrier frequency with dynamic noise control provides quiet motor operation. An on-board EMI/RFI filter compliant with IEC 61800-3 minimizes interference of surrounding equipment. All Z1000 drives also feature embedded BACnet communications (BTL certified), along with Modbus/Memobus. Applications macros are available to facilitate quick and easy setup.

Closed loop control of fans and pumps for pressure, flow, or temperature regulation is accomplished via the Z1000’s PI feature, which eliminates the need for a closed loop output signal from a BAS. Independent PI is also available to control an external device in your system.

Available NEMA 1 models include ratings of 3 to 150 hp (208 V) and 3 to 500 hp (480 V). A sealed heatsink allows the drives to be mounted in a NEMA 12 enclosure with an external heatsink. All Z1000 drives are Plenum Rated (UL 1995), Seismic Rated (March 2012), and made with RoHS-compliant materials.

The Z1000 Bypass Package is optimized with an intelligent bypass and advanced BAS interface. The intelligent bypass, when enabled, can transfer the motor across the line when the application requires 60 Hz. Most HVAC systems require 60 Hz at peak demand (daytime use in summer), which will utilize the intelligent bypass function. Removing the drive at 60 Hz saves energy and removes harmonics at worse case conditions. Available NEMA 1 models include ratings of 1 to 150 hp (208 V) and 1 to 500 hp (480 V).

For more information, contact Yaskawa America Inc., 2121 Norman Dr. South, Waukegan, IL 60085. Phone: (847) 887-7372.

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