Fuji Electric Frenic-Mini - Problems with Inverter Settings

6-8
6.2.2 Problems with inverter settings
[ 1 ] 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 inverter is
running.
Check if the inverter is running with Menu #3 "Drive monitoring"
using the keypad and then confirm whether the data of the
function codes can be changed when the motor is running by
referring to the function code tables.
 Stop the motor then change the data of the function codes.
(2) The data of the function
codes is protected.
Check the data of function code F00 (Data protection).
 Change the setting of F00 from "1" to "0."
(3) The WE-KP command
("Enable editing of
function codes data from
keypad") is not input
though it has been
assigned to a digital input
terminal.
Check the data of function codes E01, E02, E03, E98 and E99
and the input signals with Menu #4 "I/O checking" using the
keypad.
 Change the setting of F00 from "1" to "0," or input a WE-K
P
command through a digital input terminal.
(4) DC link bus voltage was
below the undervoltage
detection level.
Check the DC link bus voltage with Menu #5 "Maintenance
information" and measure the input voltage using the keypad.
 Connect the inverter to a power supply that matches its
input rating.
[ 2 ] The desired menu is not displayed.
Causes Check and Measures
(1) The limiting menus
function was not selected
appropriately.
Check the data of function code E52 (Menu display mode).
 Change the data of function code E52 so that the desired
menu can be displayed.
[ 3 ] Nothing appears on the LED monitor.
Possible Causes What to Check and Suggested Measures
(1) No power supplied to the
inverter.
Check the input voltage, output voltage and interphase voltage
unbalance.
 Connect a molded case circuit breaker, an earth leakage
circuit breaker (with overcurrent protection) or a magnetic
contactor.
 Check for voltage drop, phase loss, poor connections, o
r
poor contacts, and fix them if necessary.
(2) The power for the control
circuit did not reach a high
enough level.
Check if the jumper bar has been removed between terminals
P1 and P (+) or if there is poor contact between the jumper ba
r
and the terminals.
 Connect the jumper bar to terminals P1 and P (+) or tighten
the screws. Or connect a DC reactor.
 Replace the inverter if it is malfunctioning.