Alpha ALPHA6000 Series, Руководство пользователя

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Chapter6 Troubleshooting
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197
Fault Content of checking Corrective measure
direction is
contrary W
● Adjust parameter value of
P2.25
Whether the connection of
frequency circuit is correct
● Correct the connection
Motor rotate but
can’t shift
Whether the load is too heavy
● Reduce the load or increase
Acc/Dec time
Whether the max output
frequency setting is correct ● Check the setting of
maximum output frequency
Motor’s rotate
speed is too fast
or too low
Use a rectifying voltmeter to
test Whether the voltage drop
between the motor’s terminals
is too much
● Check V/F characteristics
Whether the load is too heavy ● Reduce the load
Whether the load wave ● Reduce waving of the load
Is there any phase loss of
power supply
● Check phase loss of power
supply.
● For single-phase power
supply, connect AC reactor to
power supply
Motor’s rotate
speed isn’t
steady
Whether the frequency-giver is
steady or not
● Check the frequency-giver
Bearings’ abrasion,
lubrication, rotor’s
eccentricity
● Repair the motor
Noise of the
motor is too loud
Whether the carrier-frequency
is too low ● Increase the carrier wave
frequency
Is there any mechanical
resonance
● Adjust the jump frequency
Whether the under-chassis of
the motor is level ● Adjust the under-chassis of
the motor
Vibration of the
motor is too
much
Whether the output of the three
phases is balanceable
● Check output of the ac drive