Introduction
Congratulations on the purchase of the GX9 Adjustable Speed Drive!
The GX9 Adjustable Speed Drive (ASD) is a solid-state AC drive that features Toshiba International
Corporation’s (TIC) Virtual Linear Pump Technology (VLP Technology) and Vector Control
algorithms. The Virtual Linear Pump Technology and Vector Control 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 setup ease, smooth starts, and highly efficient operation.
The Virtual Linear Pump Technology algorithm was designed to remove the guess work that is
normally associated with the setup of pumping systems. It allows for direct, linear, and precise pump
curve responses at any flow or pressure setting. This is accomplished without the normal concerns of
the adverse effects of conventional pumping system control response curves.
Using Virtual Linear Pump Technology, the system seamlessly and easily adapts 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!
The GX9 ASD is a very powerful tool, yet surprisingly simple to operate. The user-friendly Electronic
Operator Interface (EOI) of the GX9 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 GX9
ASD.
The GX9 ASD uses digitally-controlled pulse width modulation. The programmable functions may be
accessed via the easy-to-use menu, via the Direct Access Numbers (see pg. 75), or using
communications via a host PC. The ease of system access to the monitoring and control features
combined with Toshiba’s high-performance software, delivers unparalleled motor control precision and
reliability.
This manual has been prepared for the GX9 ASD installer, user, and maintenance personnel. This
manual may also be used as a reference guide or for training. With this in mind, use this manual to
develop a system familiarity before attempting to install or operate the device.
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