Chapter 5 Troubleshooting
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Revision Nov. 2008, VLE1, SW V1.03 5-3
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 specification
Change power supply
system for requirement
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
Suitable
transformer
power
capacity
Check if voltage b1/+2
and - is greater than Pr.06-00
Maybe AC motor drive has malfunction.
Please contact DELTA.
Control circuit has malfunction or
misoperation due to noise. Please
contact DELTA.
Yes
Using the different power
supply for this drive and
heavy load system
Summary of Contents for Elevator Drive VFD-VL
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Page 21: ...Chapter 1 Introduction 1 12 Revision Nov 2008 VLE1 SW V1 03 20 30HP 15 22kW frame D...
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Page 205: ...Appendix B Accessories B 8 Revision Nov 2008 VLE1 SW V1 03 VFDB4132 VFDB4132 CHARGE ACT OC OH...
Page 238: ...Appendix B Accessories Revision Nov 2008 VLE1 SW V1 03 B 41 Order P N 200TDDS84C...
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