Omron OMNUC G5 User Manual page 503

Error Diagnosis Using the Operation Status
Symptom Probable cause
The PWR LED The power supply cable is
indicator does not wired incorrectly.
light when the
power supply is
turned ON.
The motor does The operation command
not rotate even if (RUN) is OFF.
commands are
input from the
The forward drive prohibition
controller.
(POT) and reverse drive
(Continued on next
prohibition (NOT) are OFF.
page)
The CONTROL mode is not
correct.
The error counter reset
(ECRST) is ON.
The COMMAND PULSE
mode (Pn007) selection is
incorrect.
The zero speed designation
(VZERO) is OFF.
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.
The motor power cable is
wired incorrectly.
The encoder cable is wired
incorrectly.
The control I/O connector
(CN1) is wired incorrectly.
The power supply is not ON. Check whether the power supply is
The speed command is
disabled.
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Items to check
Check whether the power supply
input is within the allowed power
supply voltage range.
Check whether the power supply
input is wired correctly.
In MONITOR mode, check whether
the RUN signal is ON or OFF.
In MONITOR mode, check whether
the POT signal and NOT signal are
ON or OFF.
Check the CONTROL mode
Selection (Pn001).
In MONITOR mode, check whether
the ECRST signal is ON or OFF.
Check the controller's command
pulse type and the Servo Drive's
command pulse type.
In MONITOR mode, check whether
the VZERO signal is ON or OFF.
Check the set value of Pn013 and
Pn522.
Check the wiring.
Check the command pulse's wiring. Wire correctly.
Check the command pulse type.
Check the command pulse's voltage. Connect a resistor that
ON and check the PWR LED indicator.
Check the voltage across the power
supply terminals.
Check if the speed command
method is correct.
11-4 Troubleshooting
Measures
Supply the correct power
supply voltage.
Wire correctly.
• Turn ON the operation
command (RUN).
• Wire correctly.
• Turn ON the POT and
NOT signals.
• If the POT and NOT inputs are
not used, set them to be disabled.
Set the CONTROL mode to
match the command type.
• Turn OFF the ECRST signal.
• Wire correctly.
Set the Servo Drive's pulse
type to match the controller's
command pulse type.
• Turn ON the VZERO signal.
• Wire correctly.
Return the set value to the
default setting.
Wire correctly.
Set the Servo Drive's pulse
type to match the controller's
command pulse type.
matches the voltage.
Turn ON the power supply.
Wire the power supply's ON
circuit correctly.
• Set the external analog
command correctly.
• Set the internal speed correctly.
11-16
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