Over Heat (Oh1, Oh2, Oh3); Overload - Delta Electronics AC Motor Drive VFD-VE Series User Manual

Chapter 5 Troubleshooting|

5.5 Over Heat (oH1, oH2, oH3)

AC motor driv e overheats
H eat sink overheats
C heck if temper atur e of heat si nk
is larger than 90
If load is too lar ge
If cooling fan functions normally
Check if cooling fan is jammed
Check if sur roundi ng temper atur e
is w ithi n specific ation
Adjust surrounding temperature
to speci fic ati on

5.6 Overload

OL
Reduce load or increase the power of AC motor drive
5-4
N o
O
C
Yes
Yes
N o
N o
Yes
Yes
No
No
OL1/ OL2
Check if the setting of electronic
thermal relay is suitable
Yes
If load is too large
Yes
Temperature detection mal functions.
Please contac t DELTA.
R educ e load
C hange cooling fan
Remove obstruc tion
Maybe AC motor drive has malfunction or
Yes
misoperation due to noise. Pleas e contact
D ELTA.
No
Maybe AC motor drive has malfunction
No
or misoperation due to noise.
Modify setting
Revision August 2008, 03VE, SW V2.04