Nidec Digistart D2 User Manual

Contents

Nidec Digistart D2 User Manual Manual pdf 16 page image

6 Diagnostics6.1 LEDs08554.BLED Status Ready RunOff No control power Motor not runningOn Ready Motor running at full speedFlash Starter tripped Motor starting or stopping6.2 Trip CodesThe Ready LED will flash a different number of times to indicate the cause of the trip.Ready LED Descriptionx 1Power Circuit: Check mains supply (L1, L2, L3), motor circuit (T1, T2, T3), soft starterSCRs and bypass relays.x 2Excess Start Time: Check load, increase Current Limit or adjust Excess Start Timesetting.x 3Motor Overload: Allow motor to cool, reset soft starter and restart.The soft starter cannot be reset until the motor has cooled.x 4Motor Thermistor: Check motor ventilation and thermistor connection TH1, TH2. Allowmotor to cool.x 5 Current imbalance: Check for mains supply or line current imbalance (L1, L2, L3).x 6 Supply Frequency: Check mains voltage is available and supply frequency is in range.x 7 Phase sequence: Check for correct phase sequence.x 8Network Communication Failure (between module and network): Check networkconnections, settings and configuration.x 9Starter Communication Failure (between starter and module): Remove and refit accessorymodule.x 10 Bypass Overload: Starter rating may be too low for the application.6.3 ResetTrips can be cleared by pressing the Reset button on the soft starter, sending a Reset command from theserial communications network, or by switching the control inputs.To clear a trip via the control inputs, the soft starter requires a closed to open transition on the stop input (DI2).• In three-wire control, use the external stop button to momentarily open the stop input (openCSL-DI2).• In two-wire control, if the soft starter tripped with a start signal present, remove the start signal(open CSL to DI1, DI2).• In two wire control, if the Digistart D2 tripped with no start signal present (eg Digistart D2 motorthermistor trip), apply then remove the start signal (close then reopen CSL to DI1, DI2).The Reset button is located on the front of the unit, above the adjustment switches.The soft starter will trip again immediately if the cause of the trip still exists.16 Digistart D2: User GuideIssue: F