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Chapter 4 ParametersAT |Troubleshooting}| BLD-E1 Series
5.5 Over Heat (oH1)
Brushless DC m otor driv e overheats
Heat sink overheats
Check if tem perature 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 specific ation
Adjust surrounding temperature
to specificat ion
5.6 Overload
OL
Reduc e load or inc rease the power of brus hl es s DC motor driv e
5-4
C
O
Yes
Yes
No
Yes
No
No
OL1/ O L2
Check if the settings of electric
thermal relay are c or rect
Yes
Is load too large
Yes
No
Temperature detection malfunctions.
Please c ontact D ELTA.
Reduce load
No
Change cooling fan
Yes
Remove
obstruc tion
Yes
Maybe brushless DC motor drive has
malf unction or m isoperat ion due to noise.
Please c ontact DELTA.
No
Modify s etting
No
Maybe br ushless DC motor dr ive has malfunction
or misoperation due to noise.
Revision May 2009, 00DE, V0.50
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