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Machine Design

HVAC drives

The Z1000 family of HVAC drives consists of the Z1000 variable-speed drive and the Z1000 Bypass Package. The Z1000 variable-speed drive is for building automation applications such as fans, pumps, and cooling towers through 500 hp. Features include an LCD operator with Hand-Off-Auto functions; an internal real-time clock with time/date stamping and timer controls; a built-in 5% line impedance that reduces input harmonic distortion, while a 5-kHz carrier frequency with dynamic noise control provides quiet motor operation; and an onboard EMI/RFI filter that minimizes interference of surrounding equipment.

Closed-loop control of fans and pumps for pressure, flow, or temperature regulation is through the Z1000’s PI feature, which eliminates the need for a closed-loop output signal from a BAS.

Available NEMA-1 models include ratings of 3 to 150 hp (208 V) and 3 to 500 hp (480 V). A sealed heat sink allows the drives to be mounted in a NEMA-12 enclosure with an external heat sink.

The Intelligent Bypass transfers the motor across the line when the application requires 60 Hz. Removing the drive at 60 Hz saves energy and removes harmonics at worse-case conditions.

Yaskawa America Inc.
2121 Norman Dr. S
Waukegan, IL 60085
(847) 887-7372

© 2012 Penton Media, Inc.

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