Eaton S611 User Manual

Also see for S611: Installation leaflet Quick start installation guide Installation leaflet

Contents

S611 Soft Starter MN03902011E—May 2012 www.eaton.com 79S611 Fault Codes, continuedCode Fault Condition Solution19 Instantaneous Overcurrent • Excessive starting current• Excessive load• Reduce starting load• Increase soft starter capacity (be sure model ratingscan handle current demands)Note:During the start ramp time, the maximum rms value of the three-phase current(s) are monitored. Instantaneous overcurrent trip threshold is 6 X catalogFLA. The trip delay is 1.5 seconds and is not user settable. Catalog FLA refers to the maximum continuous line current capacity of the S611 soft starter,NOT the motor rated FLA.Do not confuse this parameter with Thermal Overload (FC20), SCR Overcurrent (FC27), or Contactor Overcurrent (FC34).20 Overload • Motor overloaded for an extendedperiod of time• Thermal memory is over 100%• Reduce the motor’s load• Verify the Overld Trip FLA and/or Ovrld Trip Class forproper adjustment• Note: Exceeding nameplate ratings will shortenequipment life• Fault during motor start: Verify system is notexceeding the specified maximum starts per hour• Increase the initial torque and/or reduce ramp timeto bring the motor up to speed faster• Increase Trip Class setting (5–30 maximum) and/orreduce ramp time settingNote:Normal thermal memory during routine operation may be observed in the UI display. Higher than normal thermal memory may indicate an abnormaloperating condition and signal an impending Overload fault. After a motor start, the thermal memory should stabilize at a value consistent with the load.The thermal memory is stored in non-volatile memory so that the overload fault will not be cleared by cycling control power.21 Mains AC Voltage Loss • Fuses or breaker open• Disconnect open• Replace fuses, close disconnect, or reset breakerNote:The Mains Loss Fault trip threshold is 80 Vac and is not user settable.22 Under Voltage • Incoming AC line voltage below tripthreshold• Incorrect mains supply voltage• Connect to correct supply voltage• Verify that mains voltage is within acceptable values• Verify Motor Rated Voltage in the Operation mode isset to the correct valueNote:Verify that the value in the Under Voltage parameter is set to the correct line voltage and not to a nominal value. Under Voltage trip level threshold rangeis 1–99% (default 80%) of line voltage. The Under Voltage Trip Delay range is 1–60 seconds (default 10 seconds). This feature may be disabled (notrecommended). Verify that the mains voltage levels are not decreasing to unacceptable levels during motor run operation. Under voltage during the startramp time is not monitored. The Motor Rated Voltage range is 115–690 Vac (480 Vac default).23 Over Voltage • Incoming AC line voltage above tripthreshold• Incorrect mains supply voltage• Connect to correct supply voltage• Verify Motor Rated Voltage in the Operation mode isset to correct valueNote:Verify that the value in the Motor Rated Voltage parameter is set to the correct line voltage and not to a nominal value. Over Voltage trip level thresholdrange is 101–120% (default 110%) of line voltage. The Over Voltage trip delay range is 1–60 seconds (default 10 seconds). This feature may be disabled(not recommended). Verify that the mains voltage levels are not increasing to unacceptable levels during the start sequence or during motor runoperation. The Motor Rated Voltage range is 115–690 Vac (480 Vac default). Over voltage during the start ramp time is not monitored. Over Voltage—asimilar fault that may occur if the mains voltage is in excess of 800 Vac.24 Phase Reversal • Incoming line phase rotation sequenceopposite of device setting• Single-phase missing and/or open fuseor breaker• Set Phase Sequence to match incoming sequence OR• Exchange two incoming mains phases• Verify that all circuit breakers are closed or fuses areserviceableNote:If mains leads need to be changed, exchange incoming leads and set Phase Sequence to match incoming sequence. If an upstream reverser is used,disable Phase Rev Fault (not recommended). This fault is not uncommon in new installations. In the event of a blown fuse prior to a START command, thisfault may occur as the unit is not able to determine phase rotation with one open fuse. If motor rotation requires exchange of phases, exchange thecables between the soft starter and the motor.www.comoso.com