5.2 Error Diagnosis and Troubleshooting
— 5-9 —
Status when Alarm Occurred
E
At power ON
Parameter
Cn-01 bit 0 = 0
When servo ON (/S-ON)
signal turned ON
A
,
B
,C,D,E
On speed reference input
A
,
B
,C,D,E
A
,
B
,C,D,E
1 to 3 seconds after
power ON
Parameter
Cn-01 bit 0 = 1
Cause Remedy
A Servomotor wiring incorrect or
disconnected.
Check wiring and connectors at
Servomotor.
B Encoder wiring incorrect or disconnected. Check wiring and connectors at encoder.
C Incremental encoder power not supplied
from Servopack.
Use the Servopack power supply for the
encoder.
D Encoder defective. Replace Servomotor.
E Circuit board (1PWB) defective. Replace Servopack.
10.A.C2
Display and Outputs
Digital Operator Display Alarm Name Alarm Output
A.C2 Encoder phase detection error Output transistor is OFF
(alarm state)
Status when Alarm Occurred
D
At power ON
During Servomotor
operation
A
,
B
,
C
,D
1 to 3 seconds after
power ON
A
,
B
,
C
,D
Cause Remedy
A Noise in encoder wiring. Separate encoder wiring from main wiring
circuits.
B Encoder wiring incorrect or poor
connection.
Check wiring and connectors at encoder.
C Encoder defective. Replace Servomotor.
D Circuit board (1PWB) defective. Replace Servopack.
5
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