Overcurrent on the X axis: this Haas Servo Amplifier 4015H-G arrived at industrypart with an axis-related fault. Our inspection revealed numerous burnt or short-circuited SMD components. We carried out a complete preventive overhaul and subsequently tested the unit in the machine.

Unit and reported fault

Burnt and short-circuited SMD components

SMD components are mounted directly on the surface of a circuit board. In this unit, the inspection found damage to numerous components. The reported overcurrent fault was the starting point for the investigation; the examination of the amplifier established the actual workshop findings. The available photographs show the exterior before and after repair, rather than the damaged components on the circuit board.

Complete preventive overhaul and machine test

We completely overhauled the amplifier as a preventive repair measure and then tested it in the machine. The test footage below documents this stage of the repair.

Alarm reference and diagnostic context

No numerical alarm code was provided for this repair. The following is a general reference from the Haas CHC troubleshooting guide, not a record of alarms observed on this specific machine. Available messages depend on the control and amplifier generation.

The guide considers several possible causes, including amplifier faults, cables, motors and mechanical blockage. An alarm description therefore does not replace a diagnosis. Source: Haas Servo Amplifier Troubleshooting Guide – CHC.

Video: test in the machine

Photos before and after repair

Request a repair for your Haas 4015H-G

Please provide the complete model designation, a nameplate photo and the exact alarm message. Information about the affected axis and when the fault occurs helps with diagnosis. industrypart supports you with diagnosis, repair and preventive overhaul of industrial drive electronics.

For more information about our repairs of Haas servo and spindle drives, visit our Haas repair service page.