11-23
11-4 Troubleshooting
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
11
Troubleshooting and Maintenance
Troubleshooting Using the Operation Status
Symptom Probable cause Items to check Measures
The PWR LED
indicator does not
light when the power
supply is turned ON.
The power supply cable is wired
incorrectly.
Check to see if the power supply input is
within the allowed power supply voltage
range.
Supply the correct power supply
voltage.
Check to see if the power supply input is
wired correctly.
Wire correctly.
The motor does not
rotate even if
commands are input
from the controller.
(Continued on next
page)
The operation command (RUN)
is OFF.
In Monitor Mode, check whether the RUN
signal is ON or OFF.
· Turn ON the operation
command (RUN).
· Wire correctly.
The Forward or Reverse Drive
Prohibition Input (POT or NOT)
is OFF.
In Monitor Mode, check whether the POT
signal and NOT signal are ON or OFF.
· Turn ON the POT and NOT
signals.
·
Disable them in the settings when the
POT and NOT signals are not used.
The control mode does not
conform to the command.
Check the control mode Selection
(Pn001).
Set the control mode according to
the command.
The error counter reset
(ECRST) is ON.
In Monitor Mode, check whether the
ECRST signal is ON or OFF.
·
Turn OFF the ECRST signal.
· Wire correctly.
Command Pulse Mode
Selection (Pn007) is selection is
incorrect.
Check the controller's command pulse
type and the Servo Drive's command
pulse type.
Set the Servo Drive's pulse type
to match the controller's
command pulse type.
The zero speed designation
(VZERO) is OFF.
In Monitor Mode, check whether the
VZERO signal is ON or OFF.
·
Turn ON the VZERO signal.
· Wire correctly.
The internally set speeds are not set.
Check the set value of Pn304 to Pn311.
Set the desired speeds.
The No. 1 Torque Limit (Pn013)
or No. 2 Torque Limit (Pn522) is
set to 0.
Check the set value of Pn013 and Pn522. Return the set value to the default
setting.
The Servomotor power cable is
wired incorrectly.
Check the wiring. Wire correctly.
The encoder cable is wired
incorrectly.
The control I/O connector (CN1)
is wired incorrectly.
Check the command pulse's wiring. Wire correctly.
Check the command pulse type. Set the Servo Drive's pulse type
to match the controller's
command pulse type.
Check the command pulse's voltage. Connect a resistor that matches
the voltage.
Power is not supplied.
Check whether the power supply is ON and
check the PWR LED indicator.
Turn ON the power supply.
Check the voltage across the power
supply terminals.
Wire the power-ON circuit
correctly.
The speed command is
disabled.
Check if the speed command method is
correct.
· Set the external analog
command correctly.
·
Set the internal speed correctly.
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