Dear sir, We have 1 ups having problum with IGBT.We replace the IGBT again it faild Then check the ups 1 disc cap & diode is also gone.What will do next.
Very complicated these items. I have not been able to repair even apparently simple faults, manufacturers such as emerson/leibert do not release cct diagrams, so very difficult to fix as there are many different sections (pfc,rectifier,charger,upconverter,bypass,inverter) of the circuit all interconnected with a micro processor monitoring and controllling the whole thing. You have to be really lucky to sort out any problem particulary one with blown components.
Hope this helps
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The primary reason for E2-1 is that the drive board detects IGBT over current signal
Check the folowing.
A. Re-start the unit.
B. Inspect whether the servo motor wires are connected properly to the motor.
C. Replace the drive board.
D. Inspect the servo motor windings for a break. If so
E. Replace the servo motor
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same with me, we have 2 faulty unit, inverter fault. i'll try to swap almost possible faulty component but still same prob.
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