
Chapter 5 Trouble shooting and maintenance
5-10
Troubleshooting for OV, LV error display
The inverter displays OV. LV
Is the main
circuit fuse
intact?
Apply the power
Abnormal error
code
Input operation commands
Input frequency commands
Is the output frequency
of the operating unit
displayed?
Are there outputs on
output terminals T1, T2,
and T3?
motor running
Any abnormal
output value?
Are currents of
all phases
even?
The inverter is OK
Replace the main circuit board
Replace the control board
Replace the control board
Replace the control board
Is the inverter
working well after
replacement?
Perform detailed checks
The inverter faults
YES
YES
YES
YES
NO
NO
NO
NO
NO
YES
•
YES
Yes
No
No
Содержание 7300EV
Страница 14: ...Chapter 3 Environment description and installation 3 4 z EV 1P2 1P5 101 2P2 2P5 201 N4S install TM1 TM2 ...
Страница 15: ...Chapter 3 Environment description and installation 3 5 z EV 1P2 1P5 101 2P2 2P5 201 N4 install TM1 TM2 ...
Страница 86: ...Chapter 6 Peripherals 6 4 z JNFS21015 22 07 FOR EV 202 203 H1 z JNFS21016 15 07 FOR EV 202 203 H3 ...
Страница 87: ...Chapter 6 Peripherals 6 5 z JNFS20858 7 07 FOR EV 401 403 H3 ...