S611 Soft Starter MN03902011E—May 2012 www.eaton.com 51
S611 Motor Protection Parameters
The S611 implements the following protection features. Each protection feature is individually
configured and enabled by the user. Some of the features are designed to protect the motor
and others are for internal protection of the S611.
Motor Parameters
One or more of the motor protection features need the following motor parameters. The user
must input these values prior to enabling protection.
Motor Parameters Required for Protection
Instantaneous Overcurrent
When the bypass contactors are not engaged, the S611 monitors the maximum rms value
of the three-phase currents. The unit will trip with an instantaneous overcurrent fault if the
maximum value exceeds six times the catalog FLA setting for 1.5 seconds. This internal
protection mechanism is most useful for protecting the S611 from starting a motor too large
for its ratings.
Instantaneous Overcurrent Settings
Motor Stall
The S611 monitors the maximum rms value of the three-phase currents. The unit will trip with
a motor stall fault if the stall fault is enabled and the maximum rms value exceeds the trip
threshold setting when the start time setting expires.
Motor Stall Settings
Parameter Set Point Range Step Default Notes
Motor rated voltage 130–600 1 480 Settable from the UI
Mode O/P LED
Operation Motor rated voltage
Motor FLA 26–414
(depends on unit ID)
FLA <100, 0.1A
FLA >=100, 1A
Depends on unit ID Settable from the UI
Mode O/P LED
Operation Motor FLA
Trip class Off, 5–30 1 20 Settable from the UI
Mode O/P LED
Protection Trip class
Phase sequence 0 = Don’t care
1 = ABC
2 = ACB
N/A 1 = ABC Settable from UI
Mode O/P LED
Protection Phase sequence
Parameter Set Point Range Step Default Notes
Trip threshold 600% of catalog FLA N/A N/A Not user settable
Trip delay 1.5 seconds N/A N/A Not user settable
Parameter Set Point Range Step Default Notes
Trip threshold OFF, 150–300% of
FLA setting
1% 200% Settable from the UI
Mode O/P LED
Protection Stall trip %
Trip delay N/A N/A N/A Instantaneous rms value at end-of-ramp is used
www.comoso.com
To Next Page
Loading...
