Omron SYSDRIVE MX2 SERIES User Manual page 381

Condition
The output
frequency
becomes unstable.
Sufficient torque
does not generate.
The Inverter trips or
executes a free-run
or deceleration
stop when the
Digital Operator or
LCD Operator
cable is
disconnected.
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
Possible cause
Various parameters are Shift the output frequency slightly away
not appropriate. from the power supply frequency.
Change the value of Stabilization
Parameter (H006/H206).
The load fluctuates Increase the motor/Inverter capacity.
significantly.
The power supply voltage Suppress the fluctuation.
fluctuates.
Various parameters are Increase the value of Manual Torque Boost
not appropriate. Voltage (A042/A242) or Manual Torque
[Acceleration/constant Boost Frequency (A043/A243).
speed operation]
Set Torque Boost Selection (A041/A241)
to "01: Automatic torque boost".
Decrease the Carrier Frequency (b083).
Set Control Method (A044/A244) to "03:
Sensorless vector control (SLV)".
Various parameters are Extend the Deceleration Time (F003/F203/
not appropriate. A093/A293).
[Deceleration]
Turn OFF the AVR Selection (A081/A281).
Use a Braking Resistor or Regenerative
Braking Unit.
The operation to be taken Set Selection of Operation on Digital
upon Digital Operator Operator Disconnection (b165) to "02:
disconnection is not Ignore".
selected properly.
7-2 Troubleshooting
Remedial actions
Reference
Page
5-15
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5-66
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5-86
7
7-14