Delta Electronics VFD-EL series

Chapter 5 Troubleshooting|
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5-4 Revision 2016/03, 6ELE, V1.14
5.5 Over Heat (OH1)
AC motor drive ov er heats
Heat sink overheats
Chec k if temperatu re of heat sink
is gre ater than 90
O
C
No
No
No
Yes
Yes
Yes
Yes
Yes
No
Reduce load
No
Temp erature detection malfunctions.
Please conta ct D ELTA.
If co oling fa n functi ons normally
Change cool ing f an
Chec k if coolin g f an is jammed
Remove obstruct ion
Chec k if sur rounding temper ature
is within speci fication
Adjust surroundi ng temperature
to specifi cation
Maybe AC motor drive has malfun ction or
misopera tion due to noise. Please con tact
DELTA.
Is load to o la rge
5.6 Overload
OL1/ OL2
OL
Reduce load or increase the power of AC motor drive
Check for correct settings at
Pr. 06-06 and 06-07
Yes
Yes
No
No
Modify setting
Is load too large
Maybe AC motor drive has malfunction
or misoperation due to noise.