Eaton S811+N37 series User Manual

Contents

Appendix I—Troubleshooting Guide78 S811+ Soft Starter MN03900001E—November 2012● Thermal Memory● This parameter is not the same as Thermal Overload.● Parameter may be viewed in the Monitoring Menu.● At 100% Thermal memory the soft starter will stop witha RED status LED.● At 99% thermal Memory a START command will beallowed BUT, as soon as 100% is again reached, as it willbe during the start sequence, the soft starter will againstop.● Cycling 24 Vdc control power will not reduce theThermal Memory value.● Fault Occurrence Categories● Immediately when START command is issued.● During the START ramp, before the internal bypasscontactors close.● During the Internal Bypass Contactor closure event.● Anytime during the RUN operation.● During the STOP (PUMP STOP, SOFT STOP) command.● Status LED Indication Conditions● RED– Active fault is present, cannot RESET.● GREEN– Not responding to START command from field wiring.LEVEL SenseInsufficient voltage at Terminal “P”.Insufficient voltage at Terminal “1”.EDGE SenseCycle 24 Vdc at Terminal “1”Insufficient voltage at Terminal “P”.Insufficient voltage at Terminal “1”.● OFF—All– Check for loss of 24 Vdc control power and/or lessthan 17 Vdc.– Check Terminal Block for condition and security.– Verify 24 Vdc at appropriate terminals.– Verify proper operation and capacity of control powersupply.● START Command Troubleshooting● From the Terminal Block– Verify that Terminal “P” is energized continuously.– Verify that 24 Vdc is applied to Terminal “1” to issueSTART command.– If Terminals “P” and “1” are tied together, verify thatboth Terminals receive 24 Vdc START signal.– If Start Control parameter is set to EDGE, verify that24 Vdc has been cycled (removed, then reapplied)after faults have been reset.