GE 239 Instruction Manual

Also see for 239: Instruction manual

5-4239 Motor Protection RelayGE Multilin5 MONITORING 5 MONITORING5Figure 5–2: ACTUAL VALUES PAGE 1 – STATUSa) GENERAL• SYSTEM STATUS: This message gives an indication if operation is normal or whether a trip and/or alarm has occurred. Only one condition can cause a trip at a time and this will be displayedafter a trip. When alarms are present the system status will be alarm. Press to view allactive alarm conditions and the corresponding actual value that is causing the alarm. Select thecorresponding setpoint to determine by how much the actual value exceeds the alarm setting.• MOTOR STATUS: This message displays the current status of the motor.• MOTOR STARTING: This message is displayed when the motor is in a START mode. TheSTART condition occurs if the average of the three phase currents rises above the full load cur-rent setting in 66<67(06(783?02725'$7$?02725)8///2$'&855(17 within 300 ms (worst case)of initial detection of current by the 239.• TIME TO TRIP: This message is displayed when a trip condition is in progress. The messagedisplay time is scaled as follows:if the trip time is >10.0 minutes, the display will be ‘xxx.x MINUTES’≤10.0 minutes, the display will be ‘xxx.x SECONDS’• TIME TO OVERLOAD RESET: This message displays the amount of time remaining before anOVERLOAD TRIP is allowed to be reset. The time will become 0 when the thermal capacitydecreases to 15%.• CAUSE OF ALARM: The appropriate alarm message is displayed when the respective alarmcondition is present. More than one alarm message can be present at once.b) LAST TRIP DATAAfter a trip, all conditions present at the time of trip and the cause of trip are saved in non-volatilememory. In addition, a trip record of the last 5 causes of trip is also retained for diagnosing persistentproblems.• CAUSE OF LAST TRIP: Only one condition at a time will cause a trip. The most recent cause oftrip is displayed.• A: B: C: CURRENT: Actual current flowing in each of the three phases at the moment of trip isdisplayed. By comparing these values to the motor full load current after an overload trip, itshould be easy to determine in which phase the fault has occurred. A high current in one phaseand ground indicates a phase to ground fault. A high current in 2 phases suggests a phase tophase fault. High current in all three phases indicates a running overload or possible short circuit.] PROGRAMMABLE] MESSAGE] Phone: 905-294-6222] GEindustrial.com/pm] END OF PAGE A1]MESSAGE 4MESSAGE 3SEE PREVIOUS PAGEMESSAGE t