7-16
(5) Undervoltage
Undervoltage
LU
Inverter fault is
suspected.
Contact FUJI.
YES
YES
Reset fault to restart operation.
Replace defective device and
adjust wiring.
YES
Review power supply system
to meet specification.
YES
NO
NO
NO
NO
NO
YES
YES
NO
YES
NO
Is "Restart mode after momentary power
failure (function code F14)" selected?
Did power failure (momentary power
failure included) happen?
Are there device fault or defective
connection in power supply circuit?
Is power supply voltage within
specification?
Is there phase loss in power supply?
Is there load requiring large start
current in same power supply system?
Does LU happen when circuit breaker
or magnetic contactor turned is on?
Is power transformer capacity appropriate?
Summary of Contents for 5000VG7S Series
Page 7: ...0 6 Warning Label Position for Inside the Inverter...
Page 23: ...2 5 Basic Wiring Diagram Figure 2 3 1 Basic Wiring Diagram...
Page 36: ...2 18 l Control circuit terminals Control circuit terminals Screw size M3...
Page 94: ...9 4 FS5941 40 47 Figure 9 1 FS5941 60 52 FS5941 86 52 Figure 9 2...
Page 96: ...9 6 RF3280 F11 RF3400 F11 Figure 9 5 RF3880 F11 Figure 9 6 6 6 Figure 9 7 F200160...