DC contactors Overcurrent fault can be divided into:
1. Acceleration
2. Deceleration
3. Constant current.
It may be due to the acceleration/deceleration timeis too short, the load of the inverter mutations and uneven loaddistribution, output short circuit, and the main reason.
Solution to DC contactor overload fault:
At this timecould be reduced by lengthening the acceleration/deceleration time,braking components, load of the mutation, in addition to design loaddistribution, to inspect the lines.
If you disconnect the loadtransducer overcurrent fault is also about inverter inverter has gonebad, need to replace the inverter.
What does an overload fault include?
Fault including overload frequency overload and motor overload. Itsacceleration time may be too short, the grid voltage is too low, causedby excessive load.
How do you solve overload?
Generally available through extended accelerationtimes, braking time, check the voltage, and so on.
Overloading of theselected motor and inverter cannot drag the load may also be caused dueto bad machinery lubrication.
If the former then you must replace themotor and inverter power; if the latter is to overhaul the productionmachinery.
Summary
1. In the design, installation, usage, frequency convertermust comply with the instructions for use guidance;
2. The designers, electrical commissioning on site staff can perfectthis inverter on the basis of this reference.
