Yaskawa Sigma Mini - Manual (Page 232)

INSPECTION AND MAINTENANCE
5.2.1 Troubleshooting Problems with Alarm Display
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Cause Remedy
A Cable defective or poor contact between
Digital Operator and Servopack.
• Check connector connections.
• Replace cable.
B Malfunction due to external noise. Separate Digital Operator and cable from
noise source.
C Digital Operator defective. Replace Digital Operator.
D Servopack defective. Replace Servopack.
15.A.99
Display and Outputs
Digital Operator Display Alarm Name Alarm Output
A.99 --- Output transistor is ON.
Status when Alarm Occurred
A.99 is not an alarm. The display A.99 indicates normal operation.
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