Clary CT Series - Manual (Page 4)

T H E C O N T I N U O U S P O W E R C O M P A N Y
Page 4
TECHNICAL DESCRIPTION
he Digital Technology (DT) Series Continuous
Power System (CPS) is a revolutionary new
concept in total power protection and
management. This UPS is a microprocessor-
based unit that now allows the user to set most of the
control feature parameters. By directly linking a
personal computer to the CT Series RS232 port,
frequency settings and operation, alarm signals, load
switching, fan operation, etc. can all be programmed to
meet specific application requirements.
The CT Series is a true on-line, continuous power
UPS. In the tradition of Clary products, the CT Series
generates the same high quality and proven reliability
to provide the best power protection available for
today’s critical applications.
In keeping with state-of-the-art design, the power
electronics are completely governed by an on-board
microprocessor. Given the powerful memory capability
of today’s microcontrollers, this microprocessor has
evolved the UPS into an all-in-one complete power
distribution and monitoring center. Not only is your
critical load insured of the most reliable and constant
power available, but the user may now continuously
track status of the supply components that keep the
entire system operational. Production downtime can
now be virtually eliminated by knowing exactly what
patterns the supply utility power maintains and by
knowing exactly the condition and life expectancy of
the battery reserve.
Reference the block diagram, on the following page,
for a simplified explanation of the system’s operation.
The AC utility source is connected to the power and
micro-electronics when the input switch is closed. The
input line is filtered, power factor corrected and
rectified for enhanced performance without disturbing
other equipment that may share the same utility circuit.
In CT units, a step-down, input isolation transformer is
added to accept higher input voltages for custom
applications. Output transformers, SNMP adapters
and many other options are available.
The microprocessor controls an Inverter Generator that
produces a low harmonic, AC sinewave for continuous
power applications.
When the input AC utility line fails, the battery circuit
within this system takes over to ensure continuous
power. Only after properly rated power is returned,
does the microprocessor reconnect the input source
back into the system.
The microprocessor is directly tied to an external
RS232 connector port. This allows the user to monitor
and even set some of the operating parameters. With
a simple link to a personal computer using the DT-
UPS2 software program supplied, you can actually
view, on your monitor, the event history of the power
distribution system with the CT Series unit as the
central hub. More sophisticated users may implement
the optional SNMP package to accomplish full Network
Power Management. T