The Z1000 Variable Speed Drive from Yaskawa is designed for building automation applications such as fans, pumps and cooling towers through 500 HP. Its features begin with an easy-to-read LCD operator with Hand-Off-Auto functions. An internal real-time clock with time /date stamping and timer controls allows for speed variations without the need for external controls. A built-in 5 percent 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.