Chapter 5 Troubleshooting |DD Series
5-6
5-5 Over Heat (oH1)
AC motor drive overheats
Heat sink overheats
Check if temperature of heat sink
is higher than 90
O
C
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Reduce load
No
Temperature detection malfunctions.
Please contact DELTA.
If cooling fan functions normally
Change cooling fan
Check if cooling fan is jammed
Remove obstruction
Check 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.
If load is too large
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