Code SRVO-046: OVC alarm (Group:%d Axis:%d)

Cause: The root-mean-square current value which is calculated internally by the servo system exceeds the maximum permissible value. This alarm is issued to protect the motor and amplifier from damage of thermal destruction. Probable cause: 1. Overload 2. External force to the robot 3. Disconnection of the brake cable 4. Insufficient torque by low voltage of power supply 5. Brake failure (includes mis-setting of brake number for auxiliary axis) 6. Aux. brake unit failure for aux. axis 7. Amplifier failure 8. Motor failure 9. Motor power cable or brake cable failure Remedy: 1. Check whether the duty and applied load exceed the rating. If so, reduce the duty or applied load. 2. Check whether the robot is pushed or pulled by external force. If so, remove the external force to the robot or modify the taught point. 4.ERROR CODES B-83124EN-6/02 3. Check whether the brake cable/connector are connected correctly. 4. Measure the supplied voltage. Then, check whether the voltage is matched to the controller specification. 5. Check whether the motor brake is released properly when Reset or the robot moves. First of all, check whether the setting of brake number is correct when this alarm occurs on auxiliary axis. 6. When this alarm occurs on the auxiliary axis which brake is controlled by the aux. brake unit, check the fuse on the aux. brake unit. 7. If this alarm cannot be reset, the troubles of related parts are thought. Refer to the Controller Maintenance Manual for more information. About auxiliary axis, refer to the Auxiliary Axis Option Maintenance Manual.