Omron R88D-GT series User Manual page 459

Alarm
Error
code
Regeneration
18
overload
Encoder
21
communications error
Status when error occurs
• Load inertia is too
• The deceleration time
• The Servomotor
Occurs when the Servo-
motor is decelerating.
• The operating limit of
• Gravitational torque is
Occurs during descent
(vertical axis)
• The operating limit of
• The encoder is
• Connector contacts
• The encoder wiring is
• The encoder is dam-
Occurs during operation.
• The Servo Drive is
• The Servomotor is
8-3 Troubleshooting
Cause
• Calculate the
great. regenerative energy,
and connect an
External Regeneration
Resistor with the
required regeneration
absorption capacity.
• Extend the
deceleration time.
• Reduce the Servomo-
is too short. tor rotation speed.
• Extend the
rotation speed is too deceleration time.
high. • Calculate the
regenerative energy,
and connect an
External Regeneration
Resistor with the
required regeneration
absorption capacity.
• Set Pn6C to 2.
the External Regener- For details, refer to
ation Resistor is limit- Parameters Details on
ed to 10%. page 5-51.
• Add a counterbalance
too large. to the machine to
lower gravitational
torque.
• Reduce the descent
speed.
• Calculate the
regenerative energy
and connect an
External Regeneration
Resistor with the
required regeneration
absorption capacity.
• Set Pn6C to 2.
the External Regener- For details, refer to
ation Resistor is limit- Parameters Details on
ed to 10%. page 5-51.
• Fix the locations that
disconnected. are disconnected.
• Correct the wiring.
are faulty.
• Correct the wiring
incorrect.
• Replace the Servomo-
aged. tor.
• Replace the Servo
faulty. Drive.
• If the Servomotor
mechanically being shaft is held by
held. external force, release
it.
Countermeasure
8-10
8