Fuji Electric FRN355VG1S-4J [1011/1046] The motor stalls during acceleration

Fuji Electric FRN30VG1S-2J [1011/1046] The motor stalls during acceleration
13.5 If Neither an Alarm Code Nor "Light Alarm" Indication (
l-al
) Appears on the LED Monitor
13-35
Chap. 13 TROUBLESHOOTING
[ 11 ] The motor stalls during acceleration.
Possible Causes What to Check and Suggested Measures
Under vector control
with/without speed sensor
(1) Function code settings do
not agree with the motor
characteristics.
For exclusive motors for the FRENIC-VG: Check whether the setting of
function code P02 matches the connected motor.
Î Correct the data of P02.
For other motors:
Î Perform auto-tuning.
Under V/f control
(2) The specified acceleration
time is too short.
Check the data of F07, C35, C46, C56 or C66 (acceleration time).
Î Increase the acceleration time.
Under V/f control
(3) The moment of inertia of the
load is large.
Measure the inverter output current.
Î Decrease the moment of inertia of the load.
Î Increase the inverter capacity.
Under V/f control
(4) Large voltage drop on wires.
Check the terminal voltage of the motor.
Î Use larger size wires between the inverter and motor or make the wiring
distance shorter.
Under V/f control
(5) The torque of the load is
large.
Measure the output current.
Î Decrease the torque of the load.
Î Increase the inverter capacity.
Under V/f control
(6) Torque generated by the
motor was insufficient.
Check that increasing the torque boost (P35, A55, A155) starts the motor.
Î Increase the value of the torque boost (P35, A55, A155).
[ 12 ] When the T-Link communications option is in use, neither a run command
nor a speed command takes effect.
Possible Causes What to Check and Suggested Measures
(1) Incorrect setting of the
communications link
operation (H30).
Check whether the setting of the communications link operation is correct
(H30).
Î Correct the data of H30.
Î Check the status of the X terminal to which the LE command ("Enable
communications link") is assigned.
(2) Incorrect setting of the
transmission format (o32).
Check whether the setting of the transmission format is correct (o32).
Î Correct the data of o32 (4W + 4W or 8W + 8W).
(3) Incorrect setting of the link
number.
Check the current setting of the link number (that should be configured in
hexadecimal).
Î Review the function code list.
(4) Data not written to the I/O
relay area as assigned.
Check the data held in the I/O relay area, using the MICREX loader.
Î Investigate writing into the I/O relay area.

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