12 Troubleshooting and Maintenance
12-22
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
44 0 Absolute
Encoder
1-rotation
Counter Error
The encoder detected a 1-rotation counter
error.
Replace the Servomotor.
45 0 Absolute
Encoder
Multi-rotation
Counter Error
The encoder detected a multi-rotation
counter error.
Replace the Servomotor.
47 0 Absolute
Encoder
Status Error
The rotation of the encoder was higher than
the specified value when the power supply
was turned ON.
Do not let the Servomotor move when the
power supply is turned ON.
48 0 Encoder
Phase-Z
Error
A missing serial incremental encoder phase-
Z pulse was detected.
The encoder is faulty.
Replace the Servomotor.
49 0 Encoder CS
Signal Error
A logic error was detected in the CS signal
for serial incremental encoder.
The encoder is faulty.
Replace the Servomotor.
50 0 External
Encoder
Connection
Error
A disconnection was detected because
communications between the external
encoder and the Servo Drive were
interrupted more than the specified number
of times.
Wire the external encoder correctly as
shown in the connection diagram. Correct
the connector pin connections.
1External
Encoder
Communicati
ons Data
Error
There was a communications error in data
from external encoder. There was a data
error mainly due to noise. The external
encoder connection cable is connected, but
a communications data error occurred.
• Provide the required external encoder
power supply voltage 5 VDC ±5% (4.75 to
5.25 V). Be careful especially when the
external encoder connection cable is long.
• If the Servomotor cable and the external
encoder connection cable are bundled
together, separate them.
• Connect the shield to FG. Refer to the
external encoder connection diagram.
Error No. (hex)
Name Cause Measures
Main Sub
ABS
ABS
ABS
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