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12 Troubleshooting and Maintenance
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
12-4 Troubleshooting
12
12-4-1 Troubleshooting with Error Displays
34 0 Overrun Limit
Error
The Servomotor exceeded the allowable
operating range set in the Overrun Limit
Setting (3514 hex) with respect to the
position command input range.
• The gain is not appropriate.
• The set value of object 3514 hex is too
small.
• Check the gains (the balance between
position loop gain and speed loop gain)
and the inertia ratio.
• Increase the set value of object 3514 hex.
Alternatively, set object 3514 hex to 0 to
disable the protection function.
36 0 Object Error Data in the Object Save Area was corrupted
when the power supply was turned ON and
data was read from the EEPROM.
• Reset all of the objects.
• If this error occurs repeatedly, the Servo
Drive may be faulty. In this case, replace
the Servo Drive. Return the Servo Drive to
the dealer that it was purchased from and
ask for investigation and repair.
1
2
37 0 Object
Corrupted
EEPROM write verification data was
corrupted when the power supply was turned
ON and data was read from the EEPROM.
The Servo Drive is faulty. Replace the Servo
Drive. Return the Servo Drive to the dealer
that it was purchased from and ask for
investigation and repair.
1
2
38 0 Drive
Prohibition
Input Error 1
When the Drive Prohibition Input Selection
(3504 hex) was set to 0, both the Forward
Drive Prohibition Input (POT) and the
Reverse Drive Prohibition Input (NOT)
turned ON. When object 3504 hex was set to
2, either the Forward Drive Prohibition input
or the Reverse Drive Prohibition input turned
ON.
Check for any problems with the switches,
wires, and power supplies that are
connected to the Forward Drive Prohibition
input or the Reverse Drive Prohibition input.
In particular, check to see if the control signal
power supply (12 to 24 VDC) turned ON too
slowly.
1Drive
Prohibition
Input Error 2
When object 3504 hex was set to 0,
EtherCAT communications were interrupted
and either POT or NOT was ON, an
operation command (such as a trial run or
FFT) was received from the CX-Drive.
Conversely, POT or NOT turned ON while
operation was being performed for a CX-
Drive operation command.
40 0 Absolute
encoder
system down
error
The voltage of the built-in capacitor dropped
below the specified value because the power
supply to the encoder or the battery power
supply was down.
Connect the battery power supply, and then
clear the absolute encoder.
Unless the absolute encoder is cleared, the
error cannot be reset.
41 0 Absolute
Encoder
Counter
Overflow
Error
The multi-rotation counter of the encoder
exceeded the specified value.
• Set the Operation Switch When Using
Absolute Encoder (3015 hex) to an
appropriate value.
• Make sure that the traveling distance from
the origin of the machine is no more than
32,767 revolutions.
42 0 Absolute
Encoder
Overspeed
Error
The Servomotor rotation speed exceeded
the specified value when only the battery
power supply was used during a power
interruption.
• Check the power supply voltage (5V ±5%)
on the encoder side.
• Check the connections to connector CN2.
Unless the absolute encoder is cleared,
the error cannot be reset.
43 0 Encoder
Initialization
Error
An encoder initialization error was detected. Replace the Servomotor.
Error No. (hex)
Name Cause Measures
Main Sub
ABS
ABS
ABS
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