Eaton Electrical QSNAP user manual Enhanced Features, Standard Features, Fault Definition

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Intelligent Technologies (IT.) QSNAP

February 2002

Enhanced Features

The QSNAP offers a variety of enhanced features, including: settable warnings, current threshold warning, underload warning and reset. To help diagnose an application, a fault queue is provided to view the last five faults.

Refer to the following two tables for definitions of the QSNAP Enhanced Features and Threshold Features.

Table 8: Standard Features

Fault

Definition

Phase Current

A phase current unbalance trip will occur if one or two of the line currents are

Unbalance/Phase Loss

40 – 60% or less of the remaining line(s) for longer than 10 seconds.

 

A phase loss trip will occur with a load current of at least 75% of the minimum

 

FLA if one of the two input line voltages is lost, with the line current going to

 

zero for longer than 10 seconds.

 

 

Thermal Overload

While the motor is running and depending on the FLA and trip class settings,

 

when the FLA is exceeded for a period of time (depending on the trip class

 

setting), a thermal overload trip will occur. For more information on this

 

feature, see the IT. Contactor and Starter User Manual (Publication No. 49400).

 

 

Table 9: Enhanced Features

Fault

Definition

Ground Fault

With the addition of a Ground Fault module, the QSNAP will trip when the

 

module detects a ground fault. To set the level of the trip, a setting is adjusted

 

on the Ground Fault Module. The Ground Fault Module is connected to the

 

QSNAP through the Auxiliary opening on the face of the QSNAP.

 

 

Underload Warning

While the motor is running, a warning will be activated when the current falls

 

below a user settable % of FLA.

 

 

Current Threshold

While the motor is running, a warning will be activated when the current rises

Warning

above a user settable % of FLA.

 

 

Note: The threshold values for Thermal Overload and Phase Current Unbalance can not be modified.

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Pub. No. MN05001001E

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Contents Intelligent Technologies Important Notice Please Read Table of Contents List of Tables List of FiguresQsnap Electromechanical Starter Connectivity Table Product OverviewDescription Qsnap S751 Connectivity TableFeatures and Benefits Safety Catalog Numbering System Environmental RatingsApprovals/Certifications Environmental RatingsPhysical Description Physical FeaturesDimensions Current Source Power SourcePower Requirements LoadQsnap Operation Default Input Data from QsnapDefault Output Data to Qsnap Out of Box OperationTypical Application Typical Qsnap ApplicationEnhanced Features Enhanced FeaturesStandard Features Fault DefinitionData Description Input Assembly Data DefinitionsInput/Output Data Output Assembly Data Definitions Default Input DataDefault Output Data Status LED Status LEDTruth Table Qsnap Truth TableUsing CH Studio ConfigurationInstallation Set the Group IDMount the IT. Qsnap to the Starter SW1 SettingsSW1 Settings Starter Size/Available Auxiliary Locations on Mounted QsnapQsnap Alignment and Mounting Starter RJ-45 Wire the IT. Qsnap to the StarterTerminal Block Wiring Connect the Qsnap to QCPort QCPort ConnectionTroubleshooting Troubleshooting and MaintenanceTroubleshooting Renewal PartsNumber Parameter Length Units Appendix a Qsnap ParametersConfiguration Parameters Data Parameters Number Parameter Units LengthPublication Description Intelligent Technologies IT. Publications and SupportIT. Publications Intelligent Technologies IT. Qsnap Page Eaton’s Cutler-Hammer Aftermarket Services Response network that gives new meaning to customer service