Cut Sheet

V10-T17-48 Volume 10—Enclosed Control CA08100012E—November 2012 www.eaton.com
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17.6
Technical Data and Specifications
Reduced Voltage Starters
Features and Benefits
●
The User Interface Module
(UI) provides an intuitive,
easy-to-use human
interface with powerful
configuration capabilities to
maximize system
performance
●
Door or device mounted UI
enables users to safely
configure, commission,
monitor and troubleshoot
the system at the electrical
panel without opening the
enclosure door, eliminating
the possibility of an arc
flash incident
●
System operating
parameters can be
monitored enterprise-wide
through a communications
network. Increase uptime
by providing data for
process management and
preventive diagnostics
●
Run bypass mode greatly
reduces internal heating
created by the greater
power dissipation in the
SCRs. Bypass contactors
directly connect the motor
to the line and improves
system efficiency by
reducing internal power
losses
●
Internal solid-state
overload protection
provides accurate current
measurement and trip
settings. Sophisticated
algorithms solve a series of
differential equations that
model true motor heating
and cooling, resulting in
superior motor overload
protection while
minimizing nuisance trips.
Advanced selectable
protective features
safeguard the motor and
system against a variety of
system faults
●
Internal run bypass
contactors and overload
protection eliminate the
need for additional devices,
reducing enclosure sizes
minimizing installation and
wiring time and reducing
overall assembly size and
cost
●
Wide range of overload
FLA settings (50–100% of
rated frame current) and a
selectable trip class (5–30)
offers users the flexibility
to fine tune the starter to
match specific application
requirements
●
Variable ramp times and
torque control settings
provide unlimited starting
configurations, allowing for
maximum application
flexibility
●
Kick-start feature enables
soft starting of high friction
loads
●
Soft stop control for
applications where an
abrupt stop of the load is
not acceptable
●
Pump control option with
sophisticated pump
algorithms on both starting
and stopping that minimize
the pressure surges that
cause water hammer. The
pump control option will
maximize the life of the
pump and piping systems
while minimizing the
downtime caused by
system failure
●
Six SCRs control all three
motor phases, providing
smooth acceleration and
deceleration performance
●
Soft acceleration and
deceleration reduces wear
on belts, gears, chains,
clutches, shafts and
bearings
●
Reduce the peak inrush
current's stress on the
power system
●
Minimize peak starting
torque to diminish
mechanical system wear
and damage
●
120 Vac control voltage
enhances ease of
connections
●
The S611 lends itself to
serviceability. The PCBs
and contactors can be
replaced in the field
Protective Features
All protective features can be configured, enabled or disabled with the UI or through the
communications network.
Motor Overload
The S611 includes electronic
overload protection as
standard. The overload meets
applicable requirements for a
motor overload protective
device. The overload protects
the motor from over heat
conditions with the use of
sophisticated algorithms that
model true motor heating,
resulting in superior motor
protection and fewer
nuisance trips.
The S611 calculates a thermal
memory value. A 100% value
represents the maximum
safe temperature of the
motor. When the thermal
memory value reaches 100%,
an overload trip will occur
removing power to the motor.
Upon trip, the S611 stores
the calculated motor heating
value and will not allow a
motor re-start until the motor
has cooled. This feature
ensures the motor will not
be damaged by repeated
overload trip, reset and
re-start cycles.
The thermal memory value
can be monitored through the
UI or the communications
network. The thermal
memory value can be of great
use in determining an
impending overload trip
condition. Alarms can be
implemented in the process
monitoring system warning
of an impending trip before a
trip occurs halting the
process. Costly system
downtime can be avoided.
The trip current is adjusted to
match the specific application
requirements by entering the
motor nameplate full load
current rating and trip class.
The FLA adjustment includes
a 2 to 1 adjustment range.
The overload trip class is
adjustable from class 5
through class 30. The
overload is ambient
temperature compensated -
meaning its trip
characteristics will not vary
with changes in ambient
temperature. The overload
protection can be enabled,
disabled, or disabled on start.
Short Circuit
The use of a short circuit
protective device in
coordination with the S611 is
required in branch motor
circuits by most electrical
codes. Short circuit
coordination ratings with both
fuses and Eaton molded case
circuit breakers are available
providing customers with
design flexibility. The S611
has short circuit coordination
ratings as an open
component, an enclosed
starter, and in a motor control
center. The short circuit
ratings can go up to 100KA.