Omron R88D-KN series User Manual page 383

Error No. (hex)
Name
Main Sub
15 0 Servo Drive
Overheat
16 0 *1
Overload
18 0 Regeneration
*2
Overload
1 Regeneration
Tr Error
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
Cause
The temperature of the Servo Drive radiator
or power elements exceeded the specified
value.
• The ambient temperature of the Servo
Drive exceeded the specified value.
• Overload
When the feedback value for force command
exceeds the overload level specified in the
Overload Detection Level Setting (3512 hex),
overload protection is performed according
to the overload characteristic curve set in the
Motor Overload Curve Selection (3929 hex).
• The load was heavy, the effective force
exceeded the rated force, and operation
continued too long.
• Vibration or hunting occurred due to faulty
gain adjustment. The motor vibrates or
makes unusual noise. The Mass Ratio
(3004 hex) setting is faulty.
• The motor wiring is incorrect or broken.
• The machine was hit by an object, or the
machine load suddenly became heavy.
The machine was distorted.
• The brake remains ON.
• When multiple machines were wired, the
wiring was incorrect and the motor cable to
was connected to a motor for another axis.
The regenerative energy exceeds the
processing capacity of the Regeneration
Resistor.
• The regenerative energy during
deceleration caused by a large load mass
increased the converter voltage, and then
insufficient energy absorption by the
Regeneration Resistor further increased
the voltage.
• The motor speed is too high to absorb the
regenerative energy within the specified
deceleration time.
• The operating limit of the external resistor
is limited to a 10% duty.
The Servo Drive regeneration drive Tr is
faulty.
12 Troubleshooting and Maintenance
Measures
• Improve the ambient temperature and the
cooling conditions of the Servo Drive.
• Increase the capacities of the Servo Drive
and the motor. Set longer acceleration and
deceleration times. Reduce the load.
Check if force (current) waveforms oscillate
or excessively oscillates vertically during
analog output or communications. Check the
overload warning display and the load rate
through communications.
• Increase the capacities of the Servo Drive
and the motor. Set longer acceleration and
deceleration times. Reduce the load.
• Readjust the gain.
• Connect the motor cable as shown in the
wiring diagram. Replace the cable.
• Remove the distortion from the machine.
Reduce the load.
• Measure the voltage at the brake
terminals. Turn OFF the brake.
• Wire the motor and the external encoder
correctly so that the wiring matches the
axes.
Check the load rate of the Regeneration
Resistor through communications. This
Regeneration Resistor cannot be used for
continuous regenerative braking.
• Check the operation pattern (speed
monitor). Check the load rate of the
Regeneration Resistor and check for the
excessive regeneration warning display.
Increase the capacities of the Servo Drive
and the motor, and length the deceleration
time. Use an External Regeneration
Resistor.
• Check the operation pattern (speed
monitor). Check the load rate of the
Regeneration Resistor and the excessive
regeneration warning display. Increase the
capacities of the Servo Drive and the
motor, and lengthen the deceleration time.
Reduce the motor speed. Use an External
Regeneration Resistor.
• Set the Regeneration Resistor Selection
(3016 hex) to 2.
Replace the Servo Drive.
12
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