Delta 1.07 VFD-D D Bedienungsanleitung Seite 110

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Seitenansicht 109
Chapter 5 Troubleshooting |DD Series
5-5
5-4 Low Voltage (Lv)
Low voltage
Power cut, including momentary
power loss
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Restart after reset
Check if there is any malfunction
component in
power supply circuit
or disconnection
Change defective component
and check connection
Check if voltage is
within speci fic ati on
Change power supply
system for requirement
Check if there is heavy load
with high s tar t cur rent in the
same power system
Check if Lv occurs when
breaker and magnetic
contactor is ON
Suitable
transformer
power
capacity
Check if voltage between +1/+2
and - is greater than Pr.06-00
Maybe AC motor drive has malfunction.
Please contact DELTA .
Control circuit has malfunction or
misoper ation due to noise. P leas e
contact DELTA.
Yes
Using the di fferent power
supply for this drive and
heavy load system
Seitenansicht 109
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