GE Fuji Electric MICRO-SAVER AF-300, Руководство для стартапов

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Possible Causes What to Check and Suggested Measures
(5) Acceleration/ decelera-
tion time was too short.
CHECK
Check that the motor generates enough torque during acceleration/deceleration. The torque requirement
is calculated from the moment of inertia of the load and the acceleration/deceleration time.
SUGGESTED ACTIONS
– Increase the acceleration/deceleration time (F07, F08, E10, E11, and H54).
– Enable current limiting (F43).
– Increase the drive capacity.
(6) Malfunction caused by
noise
CHECK
Check if noise control measures are appropriate (e.g., correct grounding and routing of control and main
circuit wires).
SUGGESTED ACTIONS
– Implement noise control measures.
– Enable the auto-reset function (H04).
[2] OU Overvoltage protection
Problem The intermediate DC circuit voltage was over the detection level of overvoltage.
OU1 Overvoltage occurs during the acceleration.
OU2 Overvoltage occurs during the deceleration.
OU3 Overvoltage occurs during running at constant speed.
Possible Causes What to Check and Suggested Measures
(1) The power supply volt-
age was over the range
of the drive’s specifica-
tions.
CHECK
Measure the input voltage.
SUGGESTED ACTIONS
– Decrease the voltage to within specification.
(2) The acceleration time
was too short.
CHECK
Check if the overvoltage alarm occurs after sudden acceleration.
SUGGESTED ACTIONS
– Increase the acceleration time (F07, E10, and H54).
– Select the S-curve pattern (H07).
– May need a braking resistor.
(3) The deceleration time
was too short for the mo-
ment of inertia of load.
CHECK
Recalculate the deceleration torque from the moment of inertia for load and the deceleration time.
SUGGESTED ACTIONS
– Increase the deceleration time (F08, E11, and H54).
– Enable automatic deceleration (H69=1) so that when the intermediate dc circuit voltage exceeds the
overvoltage suppression level, the drive changes deceleration time to three times longer than the set
value.
– Set the rated voltage at base frequency (F05) to 0 to improve braking ability.
– May need a braking resistor.
(4) Loads were suddenly
removed.
CHECK
Check if the alarm occurs when loads are suddenly removed.
Check if the drive operation suddenly changes from driving operation to braking operation.
SUGGESTED ACTIONS
– May need a braking resistor.
(4) Loads were suddenly
removed.
CHECK
Check if the alarm occurs when loads are suddenly removed.
Check if the drive operation suddenly changes from driving operation to braking operation.
SUGGESTED ACTIONS
– May need a braking resistor.
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