DKG-705 AUTOMATIC MAINS FAILURE AND REMOTE START ...

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DATAKOMDKG-705 User’s ManualProgram Group: 11This group of programs defines the calibration coefficients for the voltage and currentmeasurements.This group is strictly reserved for manufacturing process and must notbe modified. Otherwise faulty measurements and unpredicted operationmay occur.Group Param. Definition Min Max Description11 B00 Phase R Calibration 0 60000 Each parameter defines the sensitivity of one11 B01 Phase S Calibrationmeasurement input. If the parameter increases, the11 B02 Phase T Calibrationinput becomes more sensitive and reads a higher11 B03 Phase U Calibrationvalue.11 B04 Phase V CalibrationThe calibration must be verified with a certified11 B05 Phase W Calibrationcalibrated test equipment.11 B06 Current R Calibration11 B07 Current S Calibration11 B08 Current T Calibration11 B09 Current U Calibration11 B10 Current V Calibration11 B11 Current W Calibration11 B12 Battery VoltageCalibration705-UE.doc - 52 -
DATAKOMDKG-705 User’s Manual18. TROUBLESHOOTINGThe genset starts to operate while AC mains are OK or faulty voltage or frequency measurements:Check engine body grounding.AC mains voltages may be outside programmed limits.Mains frequency may be outside limits.Check the AC voltage readings by pressing the MENU button.Check the mains frequency reading by pressing the MENU button.Upper and lower limits of the mains voltages may be too tight.Upper and lower limits of the mains frequency may be too tight.Get in the PROGRAM mode and check for the mains voltage and frequency upper and lower limits. Ifnecessary, widen the limits.The genset continues to operate after AC mains are reestablished:Check engine body grounding.Widen the AC voltage limits.The hysteresis value for the AC voltages is programmable (P_620).When the AC mains fail, the lower limit is raised and the upper limit is reduced by the hysteresis value toprevent a new load transfer after the load is transferred to the mains.AC voltages displayed on the unit are not correct:Check engine body grounding.The error margin of the unit is +/- 3 volts.If there are faulty measurements only when the engine is running, there may be a faulty chargingalternator or voltage regulator on the engine. Disconnect the charging alternator connection of the engineand check if the error is removed.KW and cosF readings are faulty although the Amp readings are correct:-Current transformers are not connected to the correct inputs or some of the CTs are connected withreverse polarity. Check the connections of each individual CT in order to obtain correct KW and cosF forthe related phase, then connect all CTs.Short circuit the outputs of unused Current Transformers.When the AC mains fails the unit energizes the fuel solenoid, but does not start, then gives fail tostart alarm:The unit is not supplied with battery (-) voltage at the oil pressure input.-Oil pressure switch not connected.-Oil pressure switch connection wire cut.-Oil pressure switch faulty.-Oil pressure switch closes too lately. If oil pressure falls, the unit will start. Optionally oil pressure switchmay be replaced.705-UE.doc - 53 -
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DKG-705 AUTOMATIC MAINS FAILURE AND REMOTE START ...

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