Yaskawa AC Drive Z1000 Bypass Technical Manual - Manual (Page 14)

i.1 Preface
Yaskawa manufactures products used as components in a wide variety of industrial systems and equipment. The selection and
application of Yaskawa products remain the responsibility of the equipment manufacturer or end user. Yaskawa accepts no
responsibility for the way its products are incorporated into the final system design. Under no circumstances should any
Yaskawa product be incorporated into any product or design as the exclusive or sole safety control. Without exception, all
controls should be designed to detect faults dynamically and fail safely under all circumstances. All systems or equipment
designed to incorporate a product manufactured by Yaskawa must be supplied to the end user with appropriate warnings and
instructions as to the safe use and operation of that part. Any warnings provided by Yaskawa must be promptly provided to
the end user. Yaskawa offers an express warranty only as to the quality of its products in conforming to standards and
specifications published in the Yaskawa manual. NO OTHER WARRANTY, EXPRESS OR IMPLIED, IS OFFERED.
Yaskawa assumes no liability for any personal injury, property damage, losses, or claims arising from misapplication of its
products.
This manual is designed to ensure correct and suitable application of the Z1000 Bypass. Read this manual before attempting
to install, operate, maintain, or inspect the bypass unit and keep it in a safe, convenient location for future reference. Be sure
you understand all precautions and safety information before attempting application.
u Product Description
The Z1000 Bypass provides a means of bypassing the drive while allowing the motor to operate at full speed, directly from
the AC line. It incorporates an AC Drive and a two or three-contactor bypass arrangement in a single UL listed enclosure. The
two electrically interlocked IEC rated contactors isolate the drive from the load when operating in Bypass mode.
Control logic provides industry standard Hand/Off/Auto functions, BAS Interlock, and safety circuit interlocks in both Drive
and Bypass operating modes.
Bypass components include: a fused 120 Vac control circuit transformer, an input disconnect, motor overload, 5% input line
impedance, and an HOA keypad with LCD display.
The Z1000 drive, a component of the Z1000 Bypass package, is a pulse width modulated drive for three-phase AC induction
motors. This type of drive is also known as an adjustable frequency drive, variable frequency drive, AC Drive, AFD, ASD,
VFD, and inverter.
The drive is a variable torque AC drive, designed specifically for HVAC applications in building automation, including fans,
blowers and pumps.
The Z1000 Bypass has embedded communications for the popular building automation protocols, BACnet and Modbus®.
The LCD keypad/operator is equipped with Hand/Off/Auto functions. Optional DriveWizard software allows upload/
download, as well as graphing and monitoring of drive parameters from a PC for ease of drive management.
Built-in PI control eliminates the need for closed loop output signals from a building automation system. It includes feedback
display, inverse, square root and differential control functions, and maintains setpoint for closed loop control of fans and pumps
for pressure, flow, or temperature regulation. An additional independent PI control is also provided for external devices.
u Applicable Documentation
The following manuals are available for the Z1000 Bypass:
Z1000 Bypass Technical Manual (SIEPYAIZ1B01)
Read this manual first. This manual is packaged together with the product and contains basic information required to install
and wire the bypass. It also gives detailed information on fault diagnostics, parameter settings, and BACnet specifications.
The purpose of this manual is to prepare the Z1000 Bypass for a trial run with an application and for basic operation. This
manual is also available for download on the Yaskawa documentation website, www.yaskawa.com.
Z1000-Series AC Drive User Manual (TOEPC71061645)
This manual contains basic information required to install and wire the drive. It also gives detailed information on fault
diagnostics, parameter settings, and BACnet specifications. The purpose of this manual is to prepare the drive for a trial
run with an application and for basic operation. This manual is available for download on the Yaskawa documentation
website, www.yaskawa.com.
Z1000-Series AC Drive Programming Manual (SIEPC71061645)
This manual provides detailed information on parameter settings, drive functions, maintenance, and MEMOBUS/Modbus
specifications. Use this manual to expand drive functionality. This manual is available for download on the Yaskawa
documentation website, www.yaskawa.com.
i.1 Preface
14 YASKAWA ELECTRIC SIEP YAIZ1B 01D YASKAWA AC Drive – Z1000 Bypass Technical Manual