Eaton S611, User Manual

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52 S611 Soft Starter
MN03902011E—May 2012 www.eaton.com
Motor Jam
When the bypass contactors are closed, the S611 monitors the maximum rms value of the
three-phase currents. the unit will trip with a motor jam fault if the jam trip is enabled and the
maximum rms value exceeds the trip threshold for the duration of the trip delay.
Motor Jam Settings
Contactor Overcurrent
The contactor overcurrent trip is active only if the jam fault trip is disabled. When the bypass
contactors are closed, the S611 monitors the maximum rms value of the three-phase
currents. The unit will trip with a contactor overcurrent fault if the maximum rms value
exceeds four times the catalog FLA for the class dependent trip delay.
Motor (Contactor) Overcurrent Settings
SCR Overcurrent
The SCR overcurrent trip is only active if the stall fault trip is disabled. The S611 monitors the
maximum rms value of the three-phase currents. The unit will trip with an SCR overcurrent
fault if the stall fault is disabled and the maximum rms value exceeds three times the FLA
setting when the start time setting expires.
SCR Overcurrent Settings
Parameter Set Point Range Step Default Notes
Trip threshold OFF, 150–400% of
FLA setting 1% 300% Settable from the UI
Mode O/P LED
Protection Jam trip %
Trip delay 1–20 seconds 1 2 seconds Settable from the UI
Mode O/P LED
Protection Advanced Conf—P.14
Parameter Set Point Range Step Default Notes
Trip threshold 400% of catalog
FLA N/A N/A Not user settable
Trip delay N/A N/A Not user settable
S611 never trips on overload at catalog FLA
S611 is programmed to let overload fault trip
first at catalog FLA
Class = 5 4.5 seconds
Class <= 10 9.0 seconds
Class <= 20 16.0 seconds
Class <= 30 23.0 seconds
Parameter Set Point Range Step Default Notes
Trip threshold 300% FLA N/A N/A Only active if stall is disabled
Trip delay N/A N/A N/A Instantaneous rms value at end-of-ramp is used
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