Delta Electronics VFD-EL 사용자 설명서
Chapter 5 Troubleshooting|
Revision August 2008, 2ELE, V1.02
5-3
5.4 Low Voltage (Lv)
Low voltage
Is input power cor rect? O r power cut,
including momentary power loss
including momentary power loss
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Restart after r eset
Check if there i s any malfunction
component i n
component i n
power s upply c ircuit
or disconnection
Change defec tiv e component
and chec k c onnection
and chec k c onnection
Check if voltage is
within speci fic ati on
within speci fic ati on
Make nec essary cor rections,
such as change power supply
such as change power supply
sy stem for requirement
Check if there i s heavy load
with high s tar t cur rent in the
with high s tar t cur rent in the
same power sy stem
Check if Lv occurs when
breaker and magnetic
breaker and magnetic
contactor is O N
Suitable
transformer
transformer
power
capacity
Check if voltage between +/B1
and - is greater than
and - is greater than
200VDC (for 115V/230V models)
400VDC (for 460V models)
400VDC (for 460V models)
Maybe AC motor drive has m al function.
Please contact DELTA.
Please contact DELTA.
Contr ol c ircuit has malfunction or
misoper ation due to noise. P leas e
misoper ation due to noise. P leas e
contact DELTA.
Yes