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5.4 Low Voltage (Lv)
Power cut, including momentary
power loss
Check if there is any malfunction
component
or disconnection
power supply circuit
Check if voltage is
within specification
Check if there is heavy load
with high start current in the
same power system
Check if Lv occurs when
breaker and magnetic
contactor is ON
Check if voltage between +1/+2
and - is greater than Pr.06-00
Control circuit has malfunction or
misoperation due to noise. Please
contact DELTA.
Revision Dec. 2008, 04VE, SW V2.05
CALL NOW 800-985-6929
Low voltage
No
Yes
in
No
Yes
No
Yes
No
Yes
CALL NOW 800-985-6929
Chapter 5 Troubleshooting|
Yes
Restart after reset
Change defective component
and check connection
Change power supply
No
system for requirement
Using the different power
Yes
supply for this drive and
heavy load system
Suitable
transformer
No
Maybe AC motor drive has malfunction.
Please contact DELTA.
http://www.automatedpt.com
No
power
capacity
Yes
http://www.automatedpt.com
5-3
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