|Symptom||Possible Cause||Corrective Action|
|Alarm 702 V AXIS POSITION ERROR||The trolley hit an obstruction.||Adjust the charging tray.|
|A bar is stuck.||Clear bar path.|
|Alarm 712 V AXIS SERVO OVERLOAD||The V Axis ballscrew is not lubricated.||Check for ballscrew damage.|
|The servo motor does not operate correctly.||Troubleshoot the servo motor.|
|Alarm 452 SERVO BAR MOTOR TIMEOUT||The bar feeder lifter hit an obstruction.||Remove obstructions from the lifter.|
|The DC motor brushes are worn.||Measure resistance of the DC motor.|
|The proximity sensor does not operate correctly. (Load bar)||Measure voltage to the proximity sensor.|
|There is no voltage to the DC motor.||Measure voltage to the DC motor.|
|Alarm 423 SERVO BAR EOB SWITCH POSITION||The proximity sensor does not operate correctly. (EOB switch)||Measure voltage to the proximity sensor.|
|Alarm 175 GROUND FAULT DETECTED||Cables are damaged or there is a contaminated electrical connection.||Check for connector damage.|
|The brushes are contaminated or there is a carbon buildup.||Check for contamination and remove dust.|
|Alarm 1015 CHECK SENSOR OR BAR||The proximity sensor does not operate correctly (Load "Q").||Measure voltage to the proximity sensor.|
|Noisy||The V Axis ballscrew is not lubricated.||Check for ballscrew damage.|
|Inconsistent push lengths.||Affected by previous push, pushrod timing delay, spindle liner size, chuck jaw size or grip strength.||Troubleshoot the pusher.|
Make sure bar feeder charging tray is not too high. When the tray is too high, the bar feeder can attempt to load two bars. Refer to the bar feeder manual for more information.
Press [RESET] to clear the alarm.
Handle jog the V Axis away from the obstruction.
Make sure the motor connections are properly seated and the cables are not damaged.
Go to Servo Amplifier - Troubleshooting Guide and Sigma 5 - Axis Servo Motor and Cables - Troubleshooting Guide. Check for shorts to the motor.