11-28
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
Error Diagnosis Using the Operation Status
Symptom Probable cause Items to check Measures
The 7-segment LED
indicator does not light.
The control power is not
supplied.
Check whether the power
supply input is within the
allowed power supply voltage
range.
Supply the correct power
supply voltage.
Check whether the power
supply input is wired correctly.
Wire correctly.
The LED (COM) is unlit. The MECHATROLINK-II
communications is not
established.
Check that the
communications cable is
connected correctly.
Check that the host
controller has started up.
Check that the Terminating
Resistor is connected
correctly.
Check the connector and
its connection.
The LED (COM) flashes
in green.
Asynchronous
MECHATROLINK-II
communications is
established.
Controllable by the host
controller. (normal state)
Normal state
The LED (COM) lights in
green.
Synchronous
MECHATROLINK-II
communications is
established.
Controllable (normal state) Normal state
The LED (COM) flashes
in red.
A recoverable alarm occurs
in MECHATROLINK-II
communications.
• Reset the network by the
host controller, and
establish the
communications again.
• Check that the
communications cable has
no error.
Check the wiring and
noise condition.
The LED (COM) lights in
red.
An unresettable alarm
occurs in MECHATROLINK-
II communications.
Check that no node address
duplication occurs on the
network, and that the number
of connected nodes is not over
the specification.
Correct the network
address.
An alarm occurs. Read the Error No. and the
alarm log.
Check the cause listed in Error
Diagnosis Using the Alarm
Display in previous pages.
Take appropriate
measures against the
cause of the alarm that
are listed in Error
Diagnosis Using the
Alarm Display in previous
pages.
To Next Page
Loading...
Need help?
General
