Error Diagnosis Using The Operation State - Omron G5 Series User Manual

10-4-2 Error Diagnosis Using the Operation State

Symptom Probable cause
The PWR indicator The power supply wiring is
does not light incorrect.
when the Servo
Drive is powered
on.
The Servomotor The Operation Command
does not rotate (RUN) signal is OFF.
when a command
is input from the
Forward Drive Prohibition
controller.
Input (POT) or Reverse
Drive Prohibition Input
(NOT) signal is OFF.
The control mode does not
conform to the command.
The Error Counter Reset
Input (ECRST) signal is ON.
The value set in Command
Pulse Mode Selection
(Pn007) is incorrect.
The Zero Speed
Designation Input (VZERO)
signal is OFF.
No internally set speeds are
set.
The values set in No.1 Torque
Limit (Pn013) and No.2
Torque Limit (Pn522) are 0.
The Servomotor power
cable is wired incorrectly.
The encoder cable is wired
incorrectly.
The control I/O connector
(CN1) is wired incorrectly.
Power is not supplied.
The speed command is
disabled.
The torque command is
disabled.
Both the CW and CCW
inputs are turned ON
simultaneously.
The Servo Drive is faulty.
OMNUC G5-series (Pulse-train Input Type) AC Servomotors and Servo Drives User's Manual
10 Troubleshooting and Maintenance
Check items
Check to see if the power supply input
is within the allowed power supply
voltage range.
Check to see if the power supply input
is wired correctly.
Check in the monitor mode if the RUN
signal turns ON/OFF.
Check in the monitor mode if the POT
and NOT signals turn ON/OFF.
Check the value set in Control Mode
Selection (Pn001).
Check in the monitor mode if the
ECRST signal turns ON/OFF.
Check the command pulse type of the
controller and that of the Servo Drive.
Check in the monitor mode if the
VZERO signal turns ON/OFF.
Check the values set in Pn304 to
Pn311.
Check the values set in Pn013 and
Pn522.
Check the wiring.
Check the command pulse wiring.
Check the command pulse type.
Check the command pulse voltage.
Check the power supply and the PWR
indicator.
Check the voltage across the power
terminals.
Check to see if the speed command
input method is correct.
Check to see if the torque command
input method is correct.
Check the command pulse wiring.
–
Measures
Supply the correct power
supply voltage.
Wire correctly.
• Input the Operation
Command (RUN) signal.
• Wire correctly.
• Turn ON the POT or NOT signal.
• Disable the parameter if the
POT or NOT signal is not used.
Set the control mode according
to the command.
• Turn OFF the ECRST signal.
• Wire correctly.
Set the command pulse type of
the Servo Drive so that it
matches the command pulse
type of the controller.
• Turn ON the VZERO signal.
• Wire correctly.
Set the desired rotation speed.
Restore the default set values.
Wire correctly.
Wire correctly.
Set the command pulse type of
the Servo Drive so that it
matches the command pulse
type of the controller.
Connect resistors appropriate
for the voltage.
Turn ON the power supply.
Wire the power-on circuit
correctly.
• Set the internal speed
correctly.
Set the torque command
correctly.
• Input the pulse signal to
either the CW or CCW input.
• Unused input terminals must
be always OFF.
Replace the Servo Drive.
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