Toshiba Q9 Plus Bypass ASD Installation & Operation Manual page 7

Introduction
Congratulations on the purchase of the Q9 Plus Bypass Adjustable Speed Drive (ASD)/Q9 Plus Bypass
Box!
The bypass functionality of the Q9 Plus ASD allows for the three-phase input power to be routed around
the ASD and applied directly to the motor. During bypass operation, the ASD is removed from the system
electrically via contactors. This feature allows for uninterrupted system operation during ASD adjustment,
modification, or repair. The Q9 Plus Bypass Box may be purchased either with or without an ASD
included. See the section titled
versions of the Q9 Plus Bypass Box.
The Q9 Plus Adjustable Speed Drive is a solid-state AC drive that features Toshiba International
Corporation's (TIC) Virtual Linear Pump Technology, Time-Based Alternation, and Vector Control
algorithms. These algorithms provide easy setup, enhanced reliability, and precise control under the most
demanding conditions — all while enabling the motors of the system to develop high starting torque and
providing compensation for motor slip. The result is smooth, quick starts and highly efficient operation.
Additionally, as a BACnet
HVAC systems.
Virtual Linear Pump Technology was designed to remove the guesswork that is normally associated
with the setup of pumping systems. It allows for pump curve responses that are direct, linear, and precise
at any flow or pressure setting. Eliminating the normal concerns of the adverse effects of conventional
pumping system control response curves, Virtual Linear Pump Technology allows the system to adapt
seamlessly and easily to peak load demands while maintaining the same degree of high performance
output and reliability across the entire load range — all without any user intervention!
Time-Based Alternation provides a more evenly-spread machine wear pattern for all motors and pumps
of the system. This is accomplished by optimizing load sharing — all of the pumps of a multiple-pump
system are allowed to alternatly act as the primary pump while the remaining pump(s) operate in an
ancillary mode for time intervals that are determined by the user. Time-Based Alternation also offers a
significantly decreased level of system down-time in the event of a failure of one or more pumps, when
the system continues to operate seamlessly, albeit with a diminished capacity.
The Q9 Plus ASD is a very powerful tool, yet surprisingly simple to operate. The user-friendly
Electronic Operator Interface (EOI) of the Q9 Plus ASD has an easy-to-read LCD screen and a high-
intensity LED display. The EOI provides easy access to the many monitoring and programming features
of the Q9 Plus ASD.
The Q9 Plus ASD uses digitally-controlled pulse width modulation. The programmable functions
may be accessed via the easy-to-use menu, via the Direct Access Numbers, or using
communications via a host PC. Easy system access to the monitoring and control features combined
with high-performance software delivers unparalleled motor control precision and reliability.
This manual has been prepared to enable installers, users, and maintenance personnel to maximize the
abilities of the Q9 Plus Bypass ASD/Q9 Plus Bypass Box. With this in mind, use this manual to develop
a system familiarity before attempting to install or operate the device. This manual may also be used as a
reference guide or for training.
Mounting and Connections on pg. 21
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-compatible device, the Q9 Plus ASD supports monitoring and control of
for further information on the two