Eaton S811+N37 series User Manual

Contents

Appendix I—Troubleshooting Guide76 S811+ Soft Starter MN03900001E—November 2012Appendix I—Troubleshooting GuideThis guide is intended to provide the information necessaryto successfully troubleshoot issues that may occur duringthe operation of the S611 Soft Starter. The troubleshootingsequence and fault codes (FC) are identified below in twobasic groups, New Applications and Existing Installations.While any fault may occur in either category, experience hasshown that some faults are routinely experienced in onecategory. The following information is intended to be areference guide to quickly move through the process toachieve or restore operational status of the Soft Starter.New Applications Checklist—DuringCommissioningNote: It is not unusual for the S811+ Soft Starter to trip inthe process of being commissioned as it is likely thatone or more parameter(s) setting are not appropriate.24 Vdc control power applied.● Sufficient minimum wattage and voltage value and inrushcapacity.Mains applied.● All circuit breakers closed, fuses installed—no open fuses.● All isolation devices closed.● Verify continuity of mains power to soft starter.Load connected.● All isolation devices closed.● Reversing contactors (if used) in proper position.● Continuity of circuit from soft starter to the motor.Parameter Setup—Operation Mode● Motor FLA (A)—Motor Nameplate FLA value (Default—frame size minimum).● Motor Rated Voltage (Default—480V).● Start Method—Voltage Ramp or Current Limit (Default—Voltage Ramp).● Start Time—As required (Default—20 seconds).● Initial Torque—As required (Default—45%).● Auto Reset Mode—As Required (Default—Manual).Parameter Setup—Protection Mode● Overld Trip Class—As Required (Default—20).Parameter Setup—Operation Mode—Advanced ConfigParameters● Start Control—As Required (Default—Level).● Aux Relay 1—As Required (Default—Run).● Aux Relay 2—As Required (Default—Faulted).● Network Communications Parameter Setup As Required.The following Fault Codes may be experienced duringcommissioning of a new installation or a new soft start intoan existing application. Verify all connections and settingswith test equipment as appropriate.Common Commissioning Fault Codes● FC6—Phase Loss● FC7—Phase Imbalance● FC11—Jam● FC14—Overload● FC44—Motor Voltage Phase Reversal● FC58—SCR Not Firing● FC63—Motor Stall FaultExisting Installations ChecklistExternal Circuit Components Issues● 24 Vdc control power undersized and/or failed.● Isolation contactors open or damaged.● Mains power faulty.● Load disconnected.● Load failure.● Line/Load/Control circuits not restored after componentreplacement.Verification of Recent Maintenance Functions● All disconnected connections restored.● Isolation devices restored to proper operating positions.● Proper selection of replacement components.● Verify suitability of added or modified components tocircuitry.Fault Code Verification● Use of test equipment to confirm/refute validity of faultcode.● Determine if the fault can be reset.● Determine if the fault is continuous or intermittent.● Note operating conditions at time of fault if possible.Common Fault Codes● FC5—Power Pole Over Temperature● FC7—Phase Imbalance● FC11—Jam● FC14—Overload● FC38—Temperature Sensor● FC58—SCR Not Firing● FC59—Shorted SCR.● FC61—Mains AC Voltage Lost● FC64—Voltage Zero Cross