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12 Troubleshooting and Maintenance
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
12-4 Troubleshooting
12
12-4-1 Troubleshooting with Error Displays
12-4 Troubleshooting
If an error occurs in the machine, determine the error conditions from the error displays and operation
state, identify the cause of the error, and take appropriate measures.
12-4-1 Troubleshooting with Error Displays
Error List
Error No.
Name Cause Measures
Main Sub
11 hex 0 hex Control
Power
Supply
Undervoltage
The voltage between the positive and
negative terminals in the control power
supply converter dropped below the
specified value.
Measure the voltage between the L1C and
L2C lines on the connectors and the
terminal block.
• The power supply voltage is low. A
momentary power interruption
occurred.
• Increase the power supply voltage.
Change the power supply.
• Insufficient power supply capacity: the
power supply voltage dropped because
there was inrush current when the main
power supply was turned ON.
• Increase the power supply capacity.
• The Servo Drive is faulty (circuit fault). • Replace the Servo Drive.
12 hex 0 hex Overvoltage The power supply voltage exceeded the
allowable input voltage range, causing
the voltage between the positive and
negative terminals in the converter to
exceed the specified value. The power
supply voltage is high. The voltage was
suddenly increased by the phase
advance capacitor or the uninterruptible
power supply (UPS).
Measure the voltage between the
connector (L1, L2, and L3) lines. Input the
correct voltage. Remove the phase
advance capacitor.
• The Regeneration Resistor wiring is
broken.
• Use a tester to measure the resistance
of the external resistor between the B1
and B2 terminals on the Servo Drive. If
the resistance is infinite, the wiring is
broken. Replace the external resistor.
• The External Regeneration Resistor is
inappropriate and cannot absorb all of
the regenerative energy. The load mass
is too large.
• Change the regeneration resistance and
wattage to the specified values.
(Calculate the regenerative energy and
connect an External Regeneration
Resistor with the required regeneration
absorption capacity.)
• The Servo Drive is faulty (circuit fault). • Replace the Servo Drive.
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