Delta Electronics VFD-VE Series User Manual
Chapter 5
Troubleshooting|
5-4
Revision August 2008, 03VE, SW V2.04
5.5 Over Heat (oH1, oH2, oH3)
AC motor driv e overheats
Heat sink overheats
Check if temper atur e of heat si nk
is larger than 90
is larger than 90
O
C
No
No
No
Yes
Yes
Yes
Yes
Yes
No
Reduc e load
No
Temperature detection mal functions.
Please contac t DELTA.
Please contac t DELTA.
If cooling fan functions normally
Change cooling fan
Check if cooling fan is jammed
Remove
obstruc tion
Check if sur roundi ng temper atur e
is withi n specific ation
is withi n specific ation
Adjust surrounding temperature
to speci fic ati on
to speci fic ati on
Maybe AC motor drive has malfunction or
misoperation due to noise. Pleas e contact
misoperation due to noise. Pleas e contact
DELTA.
If load is too lar ge
5.6 Overload
OL1/ OL2
OL
Reduce load or increase the power of AC motor drive
Check if the setting of electronic
thermal relay is suitable
thermal relay is suitable
Yes
Yes
No
No
Modify setting
If load is too large
Maybe AC motor drive has malfunction
or misoperation due to noise.
or misoperation due to noise.