FujiFilm Frenic-Mini Instruction Manual page 124

Possible Causes
(4) A frequency command
with higher priority than
the one attempted (e.g.,
multistep frequency,
communications or
jogging operation, etc.)
was active and the set
frequency was set to too
low a value.
(5) The acceleration/
deceleration time was too
long.
(6) Overload
(7) The current limiting
operation did not increase
the output frequency.
(8) Bias and grain set
incorrectly.
[ 3 ] The motor runs in the opposite direction to the command.
Possible Causes
(1) Wiring has been
connected to the motor
incorrectly
(2) Incorrect connection and
settings for run
commands and rotation
direction command
(FWD) and (REV)
(3) The setting for the
rotation direction via
keypad operation is
incorrect.
What to Check and Suggested Measures
Check the higher priority run command with Menu #2 "Data
checking" and Menu #4 "I/O checking" using the keypad,
referring to the block diagram of the drive command
generator.
* Refer to the FRENIC-Mini User's Manual (MEH446), Chapter 4.
Correct any incorrect function code data settings (e.g.
cancel the higher priority run command, etc.).
Check the data of function codes F07, F08, E10, E11 and
H54.
Change the acceleration/deceleration time to match the
load.
Measure the output current.
Lighten the load (e.g., operate the mechanical brake
correctly).
Check whether current limiting is active or not with Menu #3
"Drive monitoring" and check the current limiting level (F44)
using the keypad.
Change the level of the current limiting (F44) to an
appropriate value.
Decrease the value of torque boost (F09), then turn the power
off and back on again and check if the speed increases.
Adjust the value of the torque boost (F09).
Check the data of function codes F04, F05, H50, and H51 to
ensure that the V/f pattern is right.
Match the V/f pattern values with the motor ratings.
Check the data of function codes F18, C50, C32, C34, C37
and C39.
Change the bias and gain to correct values.
What to Check and Suggested Measures
Check the wiring to the motor.
Connect terminals U, V, and W of the inverter to the
respective U, V, and W terminals of the motor.
Check the data of function codes E98 and E99 and the
connection to terminals [FWD] and [REV].
Correct the data of the function codes and the connection.
Check the data of function code F02.
Change the data of function code F02 to 2 (forward
rotation) or 3 (reverse rotation).
6-5