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Customizing for Your Application 8-17
8.8 Self-Diagnostic Function
8.8.1 How to Use Self-Diagnostic Function
Perform Self-diagnostic function after input/output wiring of the inverter is finished.
This function allows the user to safely check for the IGBT fault, output phase open and
short, and Ground fault without disconnecting the inverter wiring.
There are 4 options:
Once H60 is set to a specific value from 1 to 3 and the terminal defined for this
function among P1 to P8 terminals is turned ON, the corresponding function is
conducted, displaying “dIAG”
To stop this function, press STOP/RESET key on the keypad, turn the defined terminal
OFF or turn the EST terminal ON.
Group Display Parameter Name Setting Range Default Unit
Function
group 2
H60 Self-Diagnostic Selection - 0 to 3 0 -
I/O group
t1 Multi-function Input Terminal P1
Selection
-
0 to 25
0-
to to
t8 Multi-function Input Terminal P8
Selection
20 7 -
Select Self-Diagnostic function in H60, Function group 2.
Define one terminal among P1toP8 terminals for this function.
To define P8 for this function, set t8 to “20”.
!
ATTENTION:Do not touch the inverter with hands or other
objects while performing this function because current is
flowing to the inverter output.
H60
1
1
Selecting the higher number performs all functions within lower numbers.
Self-Diagnostic
function
0 Self-Diagnostic disabled
1
IGBT fault and Ground fault
2
2
Ground fault of U phase in 2.2KW to 4.0KW inverters and ground fault of
V phase in other rating inverters may not be detected when selecting “1”.
Select 3 to make sure to detect all phase of U, V, W
2 Output phase short & open circuit and Ground fault
3 Ground fault (IGBT fault, Output phase short and open circuit)