Omron ACCURAX G5 - Page 500

11-14
11-4 Troubleshooting
Accurax G5 AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
11
Error and Maintenance
21
Encoder
communications error
Occurs during operation.
· The encoder is
disconnected.
· Connector contacts
are faulty.
· Fix the locations that
are disconnected.
· Wire correctly.
· The encoder is wired
incorrectly.
· Wire correctly.
·
The encoder is damaged. · Replace the motor.
· The driver is faulty. · Replace the driver.
· The motor is
mechanically held.
· If the motor shaft is
held, release it.
23
Encoder
communications data
error
Occurs when the power
supply is turned ON.
Or, occurs during
operation.
· The encoder signal line
is wired incorrectly.
· Wire correctly.
·
Noise on the encoder wiring
causes incorrect operation.
· Take measures against
noise on the encoder wiring.
· The encoder power
supply voltage has
dropped (especially
when the cable is long.)
· Provide the required
encoder power supply
voltage (5 VDC ± 5%).
24 Error counter overflow
Occurs when the motor
does not rotate even when
command pulses are
input.
·
The motor power line or the
encoder wiring is incorrect.
· Wire correctly.
· The motor is
mechanically held.
· If the motor shaft is
held, release it.
· Release the
electromagnetic brake.
· Control PCB error · Replace the driver.
Occurs during high-speed
rotation.
· The motor power line
or the encoder wiring is
incorrect.
· Wire correctly.
Occurs when a long string
of command pulses is
given.
· Gain adjustment is
insufficient.
· Adjust the gain.
·
The acceleration/
deceleration is too rapid.
· Extend the acceleration/
deceleration times.
· The load is too large.
· Reduce the load.
·
Select a suitable motor.
Occurs during operation.
· The set value for the
Error Counter Overflow
Level (Pn014) is
exceeded.
· Increase the set value
of Pn014.
·
Reduce the rotation speed.
· Reduce the load.
·
Extend the acceleration/
deceleration times.
25
Excessive hybrid
deviation error
Occurs for full closing
control.
· There is deviation
between the load
position according to
the external scale and
the motor position
according to the
encoder.
· Check the motor and
load connection.
·
Check the external scale
and driver connection.
· Check the external scale
load position and encoder
motor position settings.
Alarm
display
Error conditions
Status when error
occurs
Cause Measures