12 Troubleshooting and Maintenance
12-30
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
12-4-3 Troubleshooting Using the Operation State
Symptom Probable cause Items to check Measures
The 7-segment display
does not light.
The control power is not
supplied.
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 ERR indicator
flashes or lights.
A communications-related
error occurred.
Refer to Troubleshooting Errors Related to EtherCAT
Communications on page 12-27.
The L/A IN and the L/A
OUT indicators are OFF.
A link in the EtherCAT
physical communications
layer has not been
established yet.
Check to see if the
communications cable is
connected correctly.
Connect the communications
cable correctly.
Check to see if the host
controller has started.
Start the host controller.
An error occurred. Read the error number and
the error log.
Check the cause listed in 12-4-
1 Troubleshooting with Error
Displays on page 12-14.
Take appropriate measures
against the cause of the error
that are listed in 12-4-1
Troubleshooting with Error
Displays on page 12-14.
The servo does not lock. The power cable is not
connected correctly.
Check to see if the Servomotor
power cable is connected
properly.
Wire the Servomotor power
cable correctly.
The Servomotor power
supply is not ON.
Check the main circuit wiring
and power voltage.
Input the correct power and
voltage for the main circuit.
The Forward or Reverse
Drive Prohibition Input
(POT or NOT) is OFF.
• Check to see if the input for
Forward or Reverse Drive
Prohibition Input (POT or
NOT) is OFF.
• Check the input of +24 VIN to
CN1.
• Turn ON POT and NOT. Input
+24 VIN to CN1.
The torque limit is set to 0. Check to see if the torque limits
in the Positive torque limit value
(60E0 hex) and the Negative
torque limit value (60E1 hex)
are set to 0.
Set the maximum torque to be
used for each of these objects.
The Servo Drive has broken
down.
− Replace the Servo Drive.
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