Over Heat (Oh); Overload - Delta Electronics AC Motor Drive VFD-E User Manual

Chapter 5 Troubleshooting|

5.5 Over Heat (OH)

AC motor drive overheats
Heat sink overheats
Check if temperature of heat sink
is greater than 90
Is load too large
If cooling fan functions normally
Check if cooling fan is jammed
Check if surrounding temperature
is within specification
Adjust surrounding temperature
to specification

5.6 Overload

OL
Reduce load or increase the power of AC motor drive
5-4
No
O
C
Yes
Yes
No
No
Yes
Yes
No
Yes
OL1/ OL2
Check for correct settings at
Pr. 06-06 and 06-07
Yes
Is load too large
Yes
Temperature detection malfunctions.
Please contact DELTA.
Reduce load
Change cooling fan
Remove obstruction
Maybe AC motor drive has malfunction or
No
misoperation due to noise. Please contact
DELTA.
No
No Maybe AC motor drive has malfunction
or misoperation due to noise.
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
Modify setting