GE Fuji Electric MICRO-SAVER AF-300, Startup Manual, Page: 84 / 127

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[7] Power is restored after an instantaneous power failure, but the motor does not restart.
Possible Causes What to Check and Suggested Measures
(1) The setting of function
code F14 did not make
the motor restart even
if the power recovered
after an instantaneous
power failure.
CHECK
Check if an undervoltage trip occurs.
SUGGESTED ACTIONS
– Change the data for function code F14 to 4 or 3.
(2) The run command stayed
OFF even after the power
recovered.
CHECK
Check if the input signal with Menu #4 “I/O checking.”
SUGGESTED ACTIONS
– Verify the power recovery sequence with an external circuit. If necessary, consider the use of a relay that
can keep the run command on.
6.2.2 Problems with drive settings
[1] If the data of function codes cannot be changed
Possible Causes What to Check and Suggested Measures
(1) An attempt was made
to change function code
data that cannot be
changed when the drive
is running.
CHECK
Check if the drive is running using Menu #3 “drive monitoring,” and whether the data of the function codes
can be changed when the motor is running (refer to the function code tables).
SUGGESTED ACTIONS
– Stop the motor then change the data of the function codes.
(2) The data of the function
codes is protected.
CHECK
Check the data of function code F00.
SUGGESTED ACTIONS
– Disable data protection of function codes.
(3) The “Edit enable for
keypad” (WE-KP) com-
mand was not set ON
after being assigned to a
digital input terminal.
CHECK
Check the data for function codes E01, E02, E03, E98 and E99, and the input signals using Menu #4
“I/O checking.”
SUGGESTED ACTIONS
– Cancel data protection of the function codes or set the “Edit enable for keypad” command ON.
(4) Intermediate dc circuit
voltage was below the
undervoltage detection
level.
CHECK
Check the DC voltage at the intermediate circuit with Menu #5 “Maintenance information,” and measure
the
input voltage.
SUGGESTED ACTIONS
– Supply power to match the drive input rating and change the data of the function codes.
[2] The desired menu is not displayed.
Possible Causes Check and Measures
(1) The limiting menus func-
tion was not selected
appropriately.
CHECK
Check the data for function code E52.
SUGGESTED ACTIONS
– Change the data for function code E52 to display the desired menu.
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