Omron R88M-K Series User Manual page 579

Alarm
number
Name
Main Sub
Absolute encoder 1-
44 0 rotation counter error
ABS
Absolute encoder
45 0 multi-rotation counter
error
ABS
Absolute encoder
47 0
status error
48 0 Encoder phase-Z error
Encoder CS signal
49 0
error
External encoder
0
connection error
50
External encoder
1 communications data
error
External encoder
0
status error 0
External encoder
1
status error 1
External encoder
2
status error 2
51
External encoder
3
status error 3
External encoder
4
status error 4
External encoder
5
status error 5
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
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
ABS
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.
Bit 0 of the external encoder error
code (ALMC) was set to 1. Check the
external encoder specifications.
Bit 1 of the external encoder error
code (ALMC) was set to 1. Check the
external encoder specifications.
Bit 2 of the external encoder error
code (ALMC) was set to 1. Check the
external encoder specifications.
Bit 3 of the external encoder error
code (ALMC) was set to 1. Check the
external encoder specifications.
Bit 4 of the external encoder error
code (ALMC) was set to 1. Check the
external encoder specifications.
Bit 5 of the external encoder error
code (ALMC) was set to 1. Check the
external encoder specifications.
11-4 Troubleshooting
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 or 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.
· Wire the external encoder cable
correctly. Refer to the external
encoder connection diagram.
Eliminate the cause of the error and
then clear the external encoder error
from the front panel. Then, cycle the
control power supply.
11
11-20