Delta Electronics AC Motor Drive VFD-EL - Manual (Page 155)

Chapter 5 Troubleshooting|
5-4 Revision August 2008, 2ELE, V1.02
5.5 Over Heat (OH1)
AC motor drive ov erheats
Heat sink overheats
Chec k if temperature of heat sink
is greater than 90
O C
No
No
No
Yes
Yes
Yes
Yes
Yes
No
Reduce load
No
Temperature detection malfunctions.
Please c ontact D ELTA.
If cooling fan functions normally Change cooling f an
Chec k if cooling f an is jammed Remove obstruct ion
Chec k if surrounding temperature
is within specification
Adjust surrounding temperature
to specification
Maybe AC motor drive has malfunction or
misoperation due to noise. Please contact
DELTA.
Is load too large
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.