Cutler Hammer, Div of Eaton Corp IT Product Guide
IT. Intelligent soft starting solutions.
Eaton offers soft starters
that extend the life of your
mechanical components,
provide the safety and
reliability of 24V DC control
power, and retrofit into
existing enclosures and
Motor Control Centre
compartments. Not only
that, but Eaton’s IT. Soft
Starters’ small size and ridethrough capability will meet
the most demanding design
and system expectations.
With a direct focus on
control system design and
customer profitability, Eaton
is proud to offer the
Intelligent Technologies (IT.)
Soft Starters for reduced
voltage applications – a
complete offering for the
OEM and end-user
customers.
Our S752, S801 and S811
Soft Starters provide
controlled acceleration and
Eaton gives you the choice
With an impressive line of
soft starters designed with
small and large motor
applications in mind, Eaton
gives you choices. Whether
it’s the S752, S801 or the
communicating S811 line
of Soft Starters, you are
guaranteed to find an
Eaton solution to fit your
application needs.
Small size and easy
configuration make these
soft starters ideal for use in
the most demanding and
sophisticated commercial
and industrial applications.
We have IT. for every
application, offering a
complete range of solidstate reduced voltage
starters optimised to satisfy
your application
requirements.
deceleration of single and
three-phase motors and
offer a range of control and
application flexibility to
meet the needs of most
OEM and end-user
applications.
The low cost solutions to
reduced voltage starting
applications, the IT. solidstate soft starters have all
the features and options
you value.
From advanced starting and
stopping control, to
integrated functions and
motor protection and
communication capabilities,
the IT. line of soft starters
provides a unique
combination of soft starting
and flexible protective
features along with the
technological advances
you’ve come to expect from
Eaton’s products.
Why choose soft starting?
An Eaton IT. Soft Starter
uses Silicon Controlled
Rectifiers (SCRs) to
electronically reduce the
voltage output to the motor,
allowing for a ramp up to
the line voltage.
Soft starting a motor will
reduce mechanical
component shock,
minimising coupling and
shaft damage, preventing
rotor and winding failure,
and stopping drive belt
squeal and breakage. With
an IT. Soft Starter,
mechanical system
components can be
significantly reduced in size
because of lower starting
torque values (250-500%
FLA), which also prolongs
their life.
Soft starting can also
prevent damage to loads by
eliminating sudden system
acceleration and violent
speed variations –
contributing to fewer
mechanical breakdowns,
improving the quality of the
product and process. The
reduced inrush currents will
also decrease stress on the
electrical distribution
system, increasing the life
of electrical components.
Applications
Aggregate
•
Reduced starting torque
lowers stress on the
mechanical drive and
driven load, avoiding
injury and machinery
damage
• Overload protection along
with other sophisticated
trip features increase
reliability and uptime
• Low and medium voltage
solutions for aggregateduty applications with
simplified mounting for
the needed flexibility
• Communications allow for
real-time system
monitoring
• Customer service and
technical support when
you need it
Pumping/Wastewater
•
Reduces snapping of
belts, extending the life of
the belt 2-6 times
• Pump control algorithm
limits pressure surges,
maximising the life of
pumping and piping
systems while minimising
costs associated with
system downtime. It also
eliminates “water
hammer” so applications
require fewer pipe
hangers, which contribute
to fewer leaks, increasing
pump life
• Communications give you
the flexibility associated
with the real-time
monitoring of process
and diagnostic data and
insight into the condition
of equipment and processes
without a site visit
• Reduced torque decreases
stress on equipment,
lowering failure rates
HVAC
•
Communication
capabilities enable
integration into building
management systems for
easy monitoring and
troubleshooting
• Small size permits the use
of smaller panels and
enclosures, allowing you
to capitalise on significant
space savings
Conveyors
•
Smooth starts and stops
• No sliding or tilting
of goods
• No snapping of chains
or belts
• Communication capability
with IT. SNAP Modules
Compressors
•
Reduces starting currents
by 40-50% compared to
direct-on-line starters
• Provides fast start of the
compressor
Fans & Pumps
•
Reduces squealing or
snapping of belts,
extending the life 2
to 6 times
• Reduces inrush currents
• Unlimited starts and stops
• Soft Stop minimises
“water hammer”
Elevators
Smooth starts and stops
•
• Reduced wear on belts,
gears, chains, clutches,
shafts and bearings –
decreasing required
maintenance and
extending the life
• Reduced inrush currents
to minimise voltage
disturbances
Soft starting vs. direct-on-line starting
Other benefits include:
•
Soft stopping where a
stop time is greater than
coast to rest time — a
feature that is beneficial
in material handling,
conveyor and pumping
applications.
Pumping/Wastewater
•
Reducing line brown-outs
and reducing or
eliminating the costs
associated with power
distribution violations. An
IT. Soft Starter controls
peak power demand
while a full-voltage starter
can apply from 600 up to
800% FLA on start-up.
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