YASKAWA SGM series User Manual page 363

Display and Outputs
Digital Operator g p
Display and Di l d
Alarm Name Alarm Name
ALO1
A.70
ON
Overload
Status When Alarm Occurred
When servo ON (S-ON)
signal turned ON
When speed reference
input
No servomotor
rotation
During normal
operation
Cause
A Servomotor wiring incorrect or
disconnected
B Encoder wiring incorrect or disconnected
C Load greatly exceeds rated torque
D Incremental encoder power not supplied
from Servopack.
E Circuit board (1PWB) defective
Alarm Output
Alarm Code Output
ALO2
ON ON
At power ON
A
, B, D
B C
, , D
D
, E
Check wiring and connectors at
servomotor.
Check wiring and connectors at encoder.
Reduce load torque and inertia. Otherwise,
replace with larger capacity servomotor.
Use the Servopack power supply for the
encoder.
Replace Servopack.
6.2 Troubleshooting
Alarm Output p
ALO3
OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
E
Remedy
353
6