Toshiba Q9 Plus ASD Quick Start Manual page 3

Introduction
Congratulations on the purchase of the Q9 Plus Adjustable Speed Drive!
The Q9 Plus Adjustable Speed Drive (ASD) 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
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highly efficient operation. Additionally, as a BACnet -compatible device, the Q9 Plus ASD supports
interoperable 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 by optimizing load sharing such that all pumps are allowed to alternate 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 during a pump failure by allowing the system to continue to operate, 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 Toshiba's high-
performance software delivers unparalleled motor control precision and reliability.
This guide has been prepared to enable installers, users, and maintenance personnel to maximize the
abilities of the Q9 Plus ASD. With this in mind, use this guide to develop a system familiarity before
attempting to install or operate the device. This guide may also be used as a reference source or for
training.