Questions & Answers

Q4 THE SOFT STARTER TRIPS ON OVERLOAD FAULT

Start
Has the correct value of FLC been entered?	No	The full load current of the motor must be entered under the SET FLC questin in the USER MENU. The motor nameplate will give the current value of the motor to be controlled.
Yes
Has the correct overload curve been chosen?	No	There are five overload curves A, B, C, D & E. the 'A' curve is a fast response setting whilst the 'E' curve is a slow or slugged response setting. On a high inertial load the user may get a trip if an 'A' or 'B' curve has been chosen.
Yes
Is the LCD display 'flashing'?	Yes	The LCD display flashes when there is a pending fault. If the motor is overloaded the display will flash and then trip the soft starter. Check that the motor is not overloaded. Please note, however, that overload is only one of several faults that will cause the LCD display to flash.
No
Is the duty cycle of stop/starts too high?	Yes	Check the number of starts per hour. If this is more than 12 per hour it can lead to the overload to trip.
No
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