YASKAWA Sigma Mini SGMM Series User Manual page 228

Cause
A • Servomotor wiring incorrect.
• Encoder wiring incorrect (disconnection,
short circuit, power supply, etc.)
B Incremental encoder power not supplied
from Servopack.
C Noise in encoder wiring.
D Circuit board (1PWB) defective
6. A.70
Display and Outputs
Digital Operator Display
A.70
Status when Alarm Occurred
When servo ON (S-ON)
signal turned ON
When speed reference
is 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
7. A.80
Display and Outputs
Digital Operator Display
A.80
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
5.2 Error Diagnosis and Troubleshooting
Check and correct wiring. (Check phase-A,
-B, -C pulses correct at CN2.)
Use the Servopack power supply for the
encoder.
Separate encoder wiring from main wiring
circuits.
Replace Servopack.
Alarm Name
Overload
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 load moment of
inertia. Otherwise, replace with larger
capacity Servomotor.
Use the Servopack power supply for the
encoder.
Replace Servopack.
Alarm Name
Encoder error
— 5-7 —
Remedy
Alarm Output
Output transistor is OFF
(alarm state)
E
Remedy
Alarm Output
Output transistor is OFF
(alarm state)
5