11-16
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
14
0 Overcurrent
The current flowing through the
converter exceeded the specified
value.
• The Servo Drive is faulty (faulty
circuit, faulty IGBT part, etc.).
• The Servomotor cable is short-
circuited between phases U, V,
and W.
• The Servomotor cable is ground-
faulted.
• Motor windings are burned out.
• The Servomotor wiring contacts
are faulty.
• The relay for the dynamic brake
has been welded due to frequent
servo ON/OFF operations.
• The Servomotor is not suitable for
the Servo Drive.
• The command input timing is the
same as or earlier than the Servo
ON timing.
• The resistance of the connected
External Regeneration Resistor is
less than the minimum allowable
value.
• Disconnect the Servomotor cable,
and turn ON the servo. If the
problem immediately occurs,
replace the Servo Drive with a new
one.
• Check to see if the Servomotor
cable is short-circuited between
phases U, V and W by checking for
loose wire strands on the
connector lead. Connect the
Servomotor cable correctly.
• Check the insulation resistance
between phases U, V, and W of the
Servomotor cable and the
grounding wire of the Servomotor.
If the insulation is faulty, replace
the Servomotor.
• Check the balance between the
resistance of each wire of the
Servomotor. If resistance is
unbalanced, replace the
Servomotor.
• Check for missing connector pins
in Servomotor connections U, V,
and W. If any loose or missing
connector pins are found, secure
them firmly.
• Replace the Servo Drive. Do not
turn the servo ON for 3 minutes
after using the dynamic brake.
• Check model (capacity) of the
Servomotor and the Servo Drive on
the nameplates. Replace the
Servomotor with a Servomotor that
matches the Servo Drive.
• Wait at least 100 ms after the servo
has been turned ON, then input
commands.
• Connect an External Regeneration
Resistor whose resistance is more
than the minimum allowable value.
1 IPM error
15 0 Servo Drive overheat
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
• Improve the ambient temperature
and the cooling conditions of the
Servo Drive.
• Increase the capacities of the
Servo Drive and the Servomotor.
Set longer acceleration and
deceleration times. Reduce the
load.
Alarm
number
Name Cause Measures
Main Sub
To Next Page
Loading...
Need help?
General
