Delta BLD-E1 brushless DC motor drive BLD-E1 Series - Manual (Page 150)

| BLD-E1 Series
Revision May 2009, 00DE, V0.50 5-3
5.4 Low Voltage (Lv)
Low voltage
Is input power corr ect? O r power cut,
including momentary power l os s
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Restart after r eset
Check if there is any malfunc tion
component in
power s upply ci rcuit
or disconnection
Change defectiv e component
and check c onnection
Check if voltage is
within speci fic ation
Make nec essary cor rections,
such as c hange power supply
sy stem for r equirement
Check if there is heavy load
with high s tar t curr ent in the
same power sys tem
Check if Lv occurs when
breaker and magnetic
contactor i s O N
Suitable
transformer power
capacity
Check if voltage between+
and - is greater than
200VDC (for 115V/230V models)
400VDC (for 460V models)
Maybe br ushless DC motor dr ive has
malfunction. Please c ontact DE LTA.
Contr ol ci rcuit has malfunction or
misoperation due to noise. Pleas e
contact DELTA.
Yes