Omron R88M-K User Manual page 532

12 Troubleshooting and Maintenance
Error No. (hex)
Name
Main Sub
44 0 Absolute
Encoder
1-rotation
Counter Error
ABS
45 0 Absolute
Encoder
Multi-rotation
Counter Error
ABS
47 0 Absolute
Encoder
Status Error
ABS
48 0 Encoder
Phase-Z
Error
49 0 Encoder CS
Signal Error
50 0 External
Encoder
Connection
Error
1 External
Encoder
Communicati
ons Data
Error
12-22
Cause
The encoder detected a 1-rotation counter
error.
The encoder detected a multi-rotation
counter error.
The rotation of the encoder was higher than
the specified value when the power supply
was turned ON.
A missing serial incremental encoder phase-
Z pulse was detected.
The encoder is faulty.
A logic error was detected in the CS signal
for serial incremental encoder.
The encoder is faulty.
A disconnection was detected because
communications between the external
encoder and the Servo Drive were
interrupted more than the specified number
of times.
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.
G5-series AC Servomotors and Servo Drives User's Manual (with Built-in EtherCAT Communications)
Measures
Replace the Servomotor.
Replace the Servomotor.
Do not let the Servomotor move when the
power supply is turned ON.
Replace the Servomotor.
Replace the Servomotor.
Wire the external encoder correctly as
shown in the connection diagram. Correct
the connector pin connections.
• 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.