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