Delta BLD-E1 brushless DC motor drive BLD-E1 Series User Manual Page 151

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Chapter 4 ParametersAT |Troubleshooting}| BLD-E1 Series
5-4
Revision May 2009, 00DE, V0.50
5.5 Over Heat (oH1)
Brushless DC motor drive overheats
Heat sink overheats
Check 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 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 brushless DC 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 brushless DC motor drive
Check if the settings of electric
thermal relay are correct
Yes
Yes
No
No
Modify setting
Is load too large
Maybe brushless DC motor drive has malfunction
or misoperation due to noise.
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